Revision of the Siobla formosana group (Hymenoptera: Tenthredinidae)

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ZOOTAXA

ISSN 1175-5326 (print edition)

ISSN 1175-5334 (online edition)Copyright © 2013 Magnolia Press

Zootaxa 3746 (1): 041–068

www.mapress.com/zootaxa/Article

http://dx.doi.org/10.11646/zootaxa.3746.1.2

http://zoobank.org/urn:lsid:zoobank.org:pub:89BC4D0A-5038-4A0E-ADEA-14BB37DA8B34

Revision of the Siobla formosana group (Hymenoptera: Tenthredinidae)

GENGYUN NIU1 & MEICAI WEI2,3

1urn:lsid:zoobank.org:author:AD829700-118D-4B33-BF08-1B44022CED07

College of Life Science and Technology, Central South University of Forestry and Technology, 498 South Shaoshan Road, Changsha

410004, P. R. China. E-mail: [email protected]:lsid:zoobank.org:author:18D7AFE0-6CA9-403C-B03B-697D68EED8B73Corresponding author; College of Life Science and Technology, Central South University of Forestry and Technology, 498 South Sha-

oshan Road, Changsha 410004, P. R. China. E-mail: [email protected]

Abstract

14 species of the Siobla formosana species-group are revised. Three new species: Siobla jiangi Niu & Wei, sp. nov., S.

parallela Niu & Wei, sp. nov., S. weiweii Niu & Wei, sp. nov. are described. Siobla rufipes Malaise, 1945 is a new syn-

onym of S. atra Malaise, 1945. The males formerly assigned to S. atra belong to S. semipicta Malaise, 1945. The previ-

ously unknown female of Siobla rufopropodea Wei, 1998 is described. Lectotypes are designated for Siobla rufipes

Malaise, 1945, Siobla atra Malaise, 1945 and Siobla semipicta Malaise, 1945. The previously described species are illus-

trated and partly redescribed. A key to species of the group is given. Distribution records of each species of the group

except S. takeuchii are given.

Key words: Sawflies, Symphyta, key, new species, China, East Asia

Introduction

Siobla was divided into nine groups and three of the smaller groups were revised by Niu & Wei (2010a). The

metallica group was revised by Niu et al. (2012). Here we revise the formosana group, which contains three new

species and ten previously known species.

Material and methods

Specimen images were taken using a digital camera, with a series of images montaged using Helicon Focus

(©HeliconSoft). The distribution maps were prepared using the software DIVA-GIS (http://www.diva-gis.org), and

the data in shapefiles were transformed from geographic coordinates into Asia Lambert Conformal Conic

projection (ESRI: 102012).

Specimens examined during this study are deposited in: the Insect Collection of Central South University of

Forestry and Technology, Changsha, China (CSCS); Senckenberg Deutsches Entomologisches Institut,

Müncheberg, Germany (SDEI); Hungarian Natural History Museum, Budapest, Hungary (HNHM); Natural

History Museum, Stockholm, Sweden (NHRS); National Museum of Nature and Science, Tokyo, Japan (NSMT),

The Natural History Museum London, United Kingdom (BMNH), Museo Nacional de Ciencias Naturales,

Entomología, Madrid, Spain ( MNCN), The Smithsonian National Museum of Natural History, Washington DC,

USA (USNM).If not mentioned otherwise, the examined specimens are deposited in the CSCS.

Nomenclatural acts of new species, authors and literature are registered in Zoobank as per the recent proposed

amendment to the International Code of Zoological nomenclature for a universal register for animal names

(Polaszek et al. 2005a, b; Pyle et al. 2008; ICZN 2008). Rules for spelling Chinese personal and place names

follow GB/T 16159-1996 and ISO 7098: 1991: “Chinese people’s names are to be written separately with the

Accepted by A. Taeger: 8 Nov. 2013; published: 10 Dec. 2013 41

http://www.diva-gis.org


surname first, followed by the personal name written as one word, with the initial letters of both capitalized.”.

“Chinese place names should be alphabetized according to the “Spelling Rules for Chinese Geographical Place

Names,” document no. 17 (1984) of the State Committee on Chinese Geographical Place Names. Separate the

geographical proper name from the geographical feature name and capitalize the first letter of both”.

Results

Siobla Cameron, 1877

Siobla formosana group

The group was defined and keyed by Niu & Wei (2010a).

Diagnosis. Body black, with a few pale maculae, mesoscutellum black, seldom with pale macula; antenna

yellowish red or black, apical antennomeres not white, middle of antenna without pale circle; hind trochanter

always yellowish (some males with black spots); dorsum of head and mesoscutellum densely and coarsely

punctured, interspaces narrow or wanting, mat, only in few species with interspace broader than diameter of the

lateral ocelli. There are two types of lancet, with short projecting serrulae, or distinctly broadened at subapex,

serrulae strongly protruding, sharp (Fig. 9); there are several types of male genitalia (Fig. 10).

This group includes 14 species, all from East Asia and 13 recorded from China, two species are also known

from Myanmar, and one species is endemic to Japan.

Key to the species

1 Antennal flagellum yellow brown or reddish brown, base of third antennomere sometimes black . . . . . . . . . . . . . . . . . . . . . . . 2

- Antennal flagellum largely or entirely black, venter of apical antennomeres sometimes pale brown, rarely basal half of flagel-

lum partly or largely yellow brown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Posterior margin of pronotum and tegula black; (first antennomere black, pedicel and apical 2 antennomeres brown; ventral

side of apex of hind tibia with a small brown spot; wings yellowish hyaline, pterostigma and vein C black brown; postocellar

area elevated, without middle carina (Fig. 6c); mesoscutellum strongly elevated with distinct peak (Fig. 6d)). China: Chongq-

ing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. weiweii Niu & Wei, sp. nov.

- Posterior margin of pronotum and tegula yellow brown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Metapostnotum and metapleuron yellow brown; abdominal tergites 1–5 entirely yellow brown; sternites 1–6 entirely yellow

brown; hind tibia entirely yellow brown; wings hyaline, vein C and pterostigma pale yellow brown. China: Henan, Hubei,

Shaanxi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. rufopropodea Wei, 1998

- Metapostnotum and metapleuron black; abdominal tergites 2–3 yellow brown, tergites 1 and frequently 4 at least mainly black,

tergite 5 completely black; sternites 1 and 6 black, 2–5 yellow brown; apical third of hind tibia black; forewing with a distinct

apical infuscate macula, vein C largely black brown, pterostigma brown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4 Postocellar area 1.3 × broader than long (Figs 6f, g); interspaces between punctures of mesonotum polished, shiny (Fig. 6h);

first abdominal tergite polished, other tergites densely and distinctly microsculptured (Fig. 6e); ovipositor sheath as long as

middle tibia, as broad as apex of hind tibia in lateral view, apex broadly round (Fig. 6i); middle serrulae strongly elevated, 10th

serrulae with 3–5 large distal teeth (Fig. 9n). China: Henan, Shaanxi, Gansu, Hubei . . . . . . . . . S. acutitheca Niu & Wei, 2010

- Postocellar area about as broad as long (Figs 6k, l); interspaces between punctures of mesonotum finely and densely microscu-

lptured, dull (Fig. 6m); first abdominal tergite finely microsculptured, other tergites indistinctly microsculptured (Fig. 6j); ovi-

positor sheath 0.9 × length of middle tibia, about half breadth of apex of hind tibia in lateral view, apex strongly narrowed (Fig.

6n); middle serrulae flat, 10th serrulae with 10–12 minute teeth (Fig. 9u);. China: Ningxia, Shaanxi, Shanxi, Henan, Hubei,

Sichuan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. pseudoplesia Niu & Wei, 2012

5 First abdominal tergite distinctly microsculptured or with large punctures, dull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

- First abdominal tergite without distinct punctures or dense microsculpture, sometimes with very fine microsculpture, strongly

shiny . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

6 Female: apical half of hind femur, apical third of hind tibia and hind tarsus entirely yellow brown; anterior margin, middle

stripe and lateral edges of first abdominal tergite with sparse and large punctures (Fig. 7l). Male: malar space linear (Fig. 7m),

metabasitarsus 6.5 × as long as broad, middle part and lateral edges of first abdominal tergite distinctly punctured, hind leg

black except for a small pale spot on ventral side of trochanter…China: Yunnan; Myanmar: Kachin State . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. semipicta Malaise, 1945

- Female: hind leg black; first abdominal tergite distinctly microsculptured, but hardly punctured (Fig. 7p). Male: malar space as

long as diameter of ocellus (Fig. 7q), metabasitarsus 4.5 × as long as broad, first abdominal tergite without punctures, hind tro-

NIU & WEI42 · Zootaxa 3746 (1) © 2013 Magnolia Press


chanter yellow brown with small black spot, hind femur yellow brown with a small black spot near apex, hind tibia and tarsus

entirely yellow brown.… China: Yunnan; Myanmar: Kachin State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S. atra Malaise, 1945

7 Temples distinctly curved laterally in dorsal view and posterior 4/7 distinctly narrowed. Female: subapical part of lancet dis-

tinctly enlarged, middle and subapical serrulae sharp and strongly protruding. Male: malar space of male about half as long as

middle ocellus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

- Temples hardly curved laterally in dorsal view but distinctly narrowed in entire length. Female: lancet not enlarged at middle

and subapical part, middle and subapical serrulae flat, not sharp. Male. malar space linear . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

8 Posterior margin of pronotum and tegula entirely black, scarcely posterior margin of pronotum and outer margin of tegula with

very narrow brown line (about 0.2 × diameter of middle ocellus); female: middle trochanter black. China: Hunan, Guizhou,

Shaanxi, Hubei, Guangxi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S. carinoclypeata Niu & Wei, 2010

- Posterior margin of pronotum broadly (at least as broad as diameter of middle ocellus) and tegula largely yellow brown;

female: middle trochanter yellow brown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

9 Wings almost hyaline, pterostigma pale brown; antenna slender, subapical part not enlarged; ovipositor slender, distinctly

tapering toward apex in lateral view, narrower than metabasitarsomere, apical sheath 2 × as long as basal sheath; middle serru-

lae each with about 10–12 distal small teeth (Fig. 9t). China: Hunan, Guizhou. . . . . . . . . . . . . S. parallela Niu & Wei, sp. nov.

- Wings distinctly infuscate, pterostigma dark brown; antenna stout, subapical part distinctly enlarged; ovipositor sheath broad

and round toward apex in lateral view, distinctly broader than metabasitarsomere, apical sheath 1.4 × as long as basal sheath;

middle serrulae each with 3–4 distal small teeth (Fig. 9s). China: Shaanxi, Yunnan, Hubei . . . . . . . .S. listoni Niu & Wei, 2012

10 Female . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

- Male. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

11 Pterostigma dark brown to black brown; apical wing infuscate. China: Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

- Pterostigma pale brown; wing yellowish hyaline. China: Mainland; Japan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

12 Second abdominal tergite and hind tarsus entirely yellow brown; apical 1/3 of fore wing infuscate. (Male compare couplet 15)

China: Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. formosana Takeuchi, 1927

- Second abdominal tergite black with lateral yellow spot, hind tarsus largely black; apical 2/3 of fore wing infuscate. (Male

compare couplet 15) China: Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. fumipennis Malaise, 1945

13 3rd and 4th antennomeres, parts of 2nd antennomere and of 5th antennomere brown. (Male compare couplet 17) Japan: Hokkaido,

Honshu, Kyushu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. takeuchii Shinohara, Wei & Niu, 2013

- Antenna black entirely. China . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

14 Tegula and basal part of fore and middle femora black; abdominal tergite 4 largely orange brown; central parts of prescutum,

mesoscutum and mesoscutellum not differently sculptured than outer parts; densely punctured, interspaces between punctures

much shorter than diameter of a puncture; sheath as long as hind femur; lancet very long with 21 serrulae, middle serrulae each

with 5–6 distal small teeth (Fig. 9z). (Male compare couplet 16) China: Hubei . . . . . . . . . . . . . . .S. jiangi Niu & Wei, sp. nov.

- Tegula, fore and middle femur entirely yellow brown; abdominal tergite 4 black; central parts of prescutum, mesoscutum and

mesoscutellum differently sculptured than outer parts; central parts sparsely punctured, interspaces between punctures much

longer than diameter of a puncture; sheath distinctly shorter than hind femur; lancet short with 15 serrulae, middle serrulae

each with about 10 distal small teeth (Fig. 9w). (Male compare couplet 16) China: Guizhou, Sichuan, Hunan, Chongqing . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. zuoae Wei, 2005

15 Pterostigma dark brown to black brown; hind femur entirely black, metabasitarsus black. China: Taiwan . . . . . . . . . . . . . . . 16

- Pterostigma pale brown; basal half of hind femur yellowish brown, metabasitarsus yellowish brown. China: Mainland . . . . 17

16 Fourth abdominal tergite with yellow brown macula, hind tibia with basal yellow brown ring, all trochanters yellowish brown.

(Female compare couplet 12) China: Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. formosana Takeuchi, 1927

- Fourth abdominal tergite black without yellow brown macula, hind tibia black without basal yellow brown ring, all trochanters

blackish brown. (Female compare couplet 12) China: Taiwan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. fumipennis Malaise, 1945

17 Hind trochanter black with yellowish brown spots, parts of 3rd and 4th antennomeres sometimes brown. (Female compare cou-

plet 13) Japan: Hokkaido, Honshu, Kyushu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. takeuchii Shinohara, Wei & Niu, 2013

- Hind trochanter entirely yellowish brown, antenna black entirely. China . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

18 Fourth abdominal tergite yellowish brown; valviceps of penis valve broad and elliptical (Fig. 10k). (Female compare couplet

13) China: Hubei . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S. jiangi Niu & Wei, sp. nov.

- Fourth abdominal tergite black; valviceps of penis valve quite narrow (Fig. 10e). (Female compare couplet 13) China: Gui-

zhou, Sichuan, Hunan, Chongqing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S. zuoae Wei, 2005

Siobla acutitheca Niu &Wei, 2010

(Figs 1a, 1b, 4a, 4b, 6e–i, 9a, 9n, 10a, 10b)

Siobla acutitheca Niu & Wei, 2010b: 911. ♀, type locality: Songxian, Henan (China).

Description. Holotype: ♀. Length, 12 mm (Figs 1a, 4a). Body black; clypeus yellowish white, palpi, dorsum of 1st

antennomere, apical 0.8 of 2nd antennomere, entire flagellum, posterior margin of pronotum (greatest width 0.9 ×

length of lateral ocellus), tegula, posterior ridges of both mesoparapsides and metaparapsides, entire 2nd abdominal

tergite, most of 3rd abdominal tergite, and 2nd to 5th sternites entirely yellowish brown, middle of 10th abdominal

Zootaxa 3746 (1) © 2013 Magnolia Press · 43REVISION OF SIOBLA FORMOSANA GROUP


tergite, cerci and a spot on apex of sheath pale brown. Legs yellowish brown, most of fore coxa, basal 0.3–0.5 of

middle and of hind coxa, apical 0.3–0.5 of hind femur, and apical 0.3 of hind tibia black. Hairs silver brown. Wings

hyaline, apical 0.3 of fore wing and apical 0.25 of hind wing slightly infuscated, most of pterostigma, base of

Sc+R, base half of 1A and of 2A+3A brown, most of vein C and base of pterostigma dark brown, other veins

blackish brown.

Punctures on head coarse and dense, without shiny interspaces, punctures on labrum fine and sparse; punctures

on prescutum, most of scutum and anterior slope of mesoscutellum very dense, with narrow shiny interspaces;

punctures on lateral parts of mesoscutum sparse, with strong shiny interspaces (Fig. 6f); punctures on posterior

slope of mesoscutellum dense and coarse, without shiny interspaces; posttergite and most of metapostnotum shiny,

with microsculpture on margin; parapsis with large and sparse punctures and dense microsculpture; anterior slope

of metascutellum impunctate, posterior slope densely and coarsely punctured; punctures on upper and middle of

mesepisternum dense and coarse, without interspaces, venter of mesepisternum with fine punctures and broad

shiny interspaces; punctures on anepimeron dense, katepimeron with fine and dense microsculpture, posterior

margin shiny; upper of metepisternum with obscure punctures and narrow interspaces, feebly shiny; venter of

metepisternum with very sparse punctures, strongly shiny; depressed center and posterior corner of metepimeron

shiny, upper margin with dense and large punctures. First abdominal tergite with extremely weak microsculpture,

strongly shiny, lateral c with obscure punctures; other tergites densely microsculptured, feebly shiny; lateral edges

of 3rd tergite, lateral edges and posterior margin of 4th tergite, and 5th to 8th tergites distinctly punctured (Fig. 6e).

Hairs on dorsum of head straight, 1.2 × as long as diameter of lateral ocelli. Anterior margin of clypeus

truncate, middle of clypeus without carinae; malar space 0.9 × transverse diameter of median ocellus; shortest

distance between eyes below antennal sockets in front view as long as eye height; middle fovea shallow, lateral

fovea small but deep; interocellar furrow narrow and deep, postocellar furrow broad and shallow; postocellar area

1.3 × as broad as long, elevated with an obscure middle ridge (Fig. 6f); lateral furrows shallow and fine, straight,

slightly divergent posteriorly; head behind eyes 0.8 × length of eye in dorsal view; curved laterally and then

convergent posteriorly. Antenna as long as head, thorax and 1st abdominal tergite together, slightly shorter than vein

C, 2nd antennomere 1.4 × as long as broad, relative length of 3rd to 4th antennomeres as 1.7, 4th to 8th antennomeres

weakly compressed, inner and outer sides of 6th to 8th antennomeres with weak furrows, 7th antennomere 2.0 × as

long as broad. Middle furrow of prescutum distinct (Fig. 6h); mesoscutellum distinctly elevated, obviously higher

than scutum. Metabasitarsus 4.5 × as long as broad, about 1.3 × length of following 3 tarsomeres combined, hind

inner tibial spur 0.5 × length of metabasitarsus. Pulvilli of hind tarsus weakly developed, 1st pulvillus 0.9 × basal

breadth and 0.6 × apical breadth of metabasitarsus, distance between basal two pulvilli 1.7 × length of 2nd pulvillus.

Ovipositor sheath as long as middle tibia in lateral view, distinctly tapering toward apex, ventral margin clearly

curved; exposed part of apical sheath hardly narrower than apical breadth of hind tibia and about 1.2 × as long as

broad, apical sheath 1.5 × as long as basal sheath (Fig. 6i). Lancet with 16 serrulae (Fig. 9a), 10th serrula with 3

large distal teeth, teeth of each serrula not in same level and direction, ventral margin of lancet between serrulae

strongly concave, middle serrulae each with 3–4 distal fine teeth (Fig. 9n).

Male. Length, 11.5 mm (Figs 1b, 4b). Body black; 2nd to 4th abdominal tergites and 2nd to 5th abdominal

sternites yellowish brown; legs yellowish brown, most of each coxa, apical 0.3 of and long stripe on dorsum of

hind femur, and apical 0.3 of hind tibia black; punctures and structures like female, but malar space 0.4 ×transverse

diameter of median ocellus; shortest distance between eyes below antennal sockets in front view 0.8 × eye height;

head behind eyes much shorter than eyes in dorsal view, curved laterally and then distinctly convergent posteriorly

(Fig. 6g); genitalia as in Figs 10a, 10b.

Variation. Females 11.5–12 mm, males 9.5–11.5mm. Black parts of hind coxa and of hind femur vary in size.

Specimens examined. 8♀, 5♂. Henan: 1♀, “Baiyunshan, Songxian, Henan, 2011-VI-4, 1300m, Zhong Yihai

leg.”; [red] ”Holotype”; “CSCSHT 00810019” (CSCS); Hubei: 1♀, Pingqiangangou, Shennongjia, E.110º07.836´,

N.31º27.793´, 1604m, 2008-VI-11, 2008-VI-12, Zhao Fu leg.; 1♀, CSCS11021, Guitouwan, Shennongjia,

Yichang, E.110º08.872′, N.31º28.439′, 2150m, 2011.V.19, Li Zejian leg.; 1♂, CSCS11022, Guitouwan,

Shennongjia, Yichang, E.110º08.872′, N.31º28.439′, 2150m, 2011.V.25-28, Li Zejian leg.; Gansu: 1♀,

Taiyangshan, (Tianshui), 2008-VI-13, Du Weiming leg.; Shaanxi: 1♀, Zhouzhi, 2009-VI-30, Wang Peixin leg.; 1♀,

Zhouzhi, 2009-VI-23, Wang Peixin; 1♂, Zhouzhi, 2009-V-12, Wang Peixin leg.; 1♂, Zhouzhi, 2009-V-19, Wang

Peixin leg.; 1♀, , Kaitianguan 2000m, 34 00N 107 51E, Mt. Taibaishan, Qinling Mts., 6. VI. 2006, A. Shinohara

leg.; NSMT-HYM, 63349 (NSMT); 2♂, same data but NSMT-HYM, 63363, 63366(NSMT).



Distribution. China (Henan, Shaanxi, Gansu, Hubei).

Remarks. The species is similar to S. pseudoplesia Niu & Wei, 2012 but differs from it in the ovipositor sheath

about as long as middle tibia, the middle breadth of apical sheath in lateral view about as broad as apex of hind

tibia; the serrulae distinctly sclerotized and strongly protruding, the 10th serrula with 3 large teeth; the postocellar

area 1.3 × as broad as long; the interspaces between punctures on mesonotum polished, shiny; the abdominal

tergite 1 polished, tergites 2–9 distinctly microsculptured; and the first pulvillus longer than half apical breadth of

metabasitarsus.

This species is here redescribed based on the holotype. Except for the holotype, all the original paratypes of S.

acutitheca Niu &Wei belong to S. pseudoplesia Niu & Wei, 2012.

Siobla atra Malaise, 1945

(Figs 3a, 3b, 5e, 5f, 7j, k, 7n, 7p, q, 9c, 9p)

Siobla atra Malaise, 1945: 123. ♀, type locality: Kambaiti (Myanmar). (Excluding males).Siobla rufipes Malaise, 1945: 124. ♂, type locality: Kambaiti (Myanmar). Syn. nov.Siobla rufipes var. infuscata Malaise, 1945: 124. ♂, infrasubspecific name.

Description. Lectotype: ♀. Length, 11.5 mm (Figs 3a, 5e). Body and legs black; very narrow posterior margin of

pronotum dark brown, 2nd abdominal tergite with small white spots near spiracles; anterior of fore femur and most

of tibia and of tarsus brown, middle tarsus black brown, hind trochanter black brown. Body hairs silver, hairs on

dorsal side of head pale brown. Wings hyaline, vein C black, pterostigma black brown, other veins deep brown or

blackish brown.

Punctures on head large, dense and coarse without shiny interspaces, labrum sparsely punctured; prescutum,

scutum, and anterior slope of mesoscutellum densely punctured, with narrow interspaces; lateral and posterior

slope of mesoscutellum densely punctured, without interspaces; posttergite shiny with lateral corners

microsculptured; parapsides with large and sparse punctures and dense microsculpture; metascutellum with

anterior slope shiny with microsculpture and posterior slop densely and irregularly punctured; metapostnotum

shiny with margins slightly microsculptured; middle and upper of mesepisternum densely and coarsely punctured,

without shiny interspaces, venter with large and shiny interspaces between small and sparse punctures; anepimeron

coarsely punctured, upper of katepimeron with large punctures, interspaces obviously longer than diameter of

punctures, middle and lower of katepimeron microsculptured; upper of metepisternum with dense and small

punctures, interspaces shiny, narrower than diameter of punctures, venter sparsely punctured, shiny; basin of

metepimeron weakly microsculptured, dorsum with large punctures and posterior corner shiny. First abdominal

tergite feebly microsculptured, shiny, lateral edges slightly punctured; other tergites obviously microsculptured,

almost mat, lateral edges of both 3rd and 4th tergites, posterior of 4th tergite, and most of 5th to 8th tergites obviously

punctured.

Hairs on dorsum of head straight, as long as diameter of lateral ocelli. Clypeus without a transverse carina,

anterior margin truncate; malar space as long as transverse diameter of median ocellus; shortest distance between

eyes below antennal sockets in front view 1.1 × eye height; middle fovea broad with a short deep furrow on

bottom; interocellar furrow deep, postocellar furrow broad and shallow; postocellar area 1.5 × as broad as long,

weakly elevated and clearly below top of ocelli, without middle ridge; lateral furrows weakly curved, deep in entire

length, subparallel; head behind eyes 0.8 × as long as eye in dorsal view; curved laterally and then convergent

posteriorly; genal carina sharp, complete (Fig. 7j). Antenna as long as head, thorax and abdominal tergites 1–2

together, as long as vein C, 2nd antennomere 1.5 × as long as broad, relative length of 3rd to 4th antennomeres as 1.7,

5th to 8th antennomeres hardly compressed, outer sides of 5th to 8th antennomeres with weak furrows, 7th

antennomere 2.6 × as long as broad. Middle furrow of prescutum distinct; mesoscutellum distinctly elevated, as

high as scutum. Metabasitarsus 5 × as long as broad, 0.8 × length of following 4 tarsomeres combined, hind inner

tibial spur 0.45 × length of metabasitarsus. Pulvilli of hind tarsus small. Ovipositor sheath as long as middle tibia in

lateral view; exposed part of apical sheath about 2 × as long as broad, apical sheath 1.5 × as long as basal sheath,

apical sheath narrow in dorsal view, exposed part 4 × length of cerci, lateral setae on both sides of sheath straight,

forming an angle about 50 degree. Lancet broadened before apex, with 16 serrulae (Fig. 9c), middle serrulae each

with 18–20 distal fine teeth (Fig. 9p).



Male. Length, 10 mm (Figs 3b, 5f). Body black; 2nd to 4th abdominal tergites, 2nd to 5th abdominal sternites, and

most of 6th sternite yellowish brown; legs yellowish brown to orange, each coxa, fore and middle trochanter, a small

dot on apex of hind femur black; similar to female in structure, but malar space 0.5 × transverse diameter of median

ocellus (Fig. 7q); shortest distance between eyes below antennal sockets in front view 1.05 × eye height; head

behind eyes 0.6 ×eyes in dorsal view, curved laterally and then strongly convergent posteriorly ; genitalia as in Figs

10u, 10v.

Variation. A female collected from Yunnan has the hind trochanter dark brown and first abdominal tergite less

microsculptured. A male collected in Myanmar, which is named as S. rufipes var. infuscata Malaise, 1945, has the

second tergite black.

Specimens examined. MYANMAR: Lectotype (hereby designated), Siobla atra ♀, “N. E. BURMA,

Kambaiti, 7000ft, 24/5, R. MALAISE”; [red] “Typus”; “Siobla atra n. sp., Malaise det. 1936”; “NHRS-HYME

000005304”; “Lectotype, Siobla atra Malaise, 1945, Design Niu G. 2012” (NRHS); Paralectotypes of S.atra: 2 ♀,

same data as the lectotype, but 28/5, 1 ♀ same data but 8/5. The specimens bear the ID numbers NHRS-HEVA

000001608 - NHRS-HEVA 000001610 (all NRHS). 1 ♀, same data as the lectotype, but 24/5 (CSCS); 2♀, same

data (BMNH); 1 ♀, same data as the lectotype, but 28/5 ( MNCN, teste Taeger). [Furthermore, 21 ♂ that belong to

S. semipicta, see there].

Lectotype (hereby designated), Siobla rufipes ♂, “N. E. BURMA, Kambaiti, 7000ft, 26/5, R. MALAISE”,

“Typus”, "NHRS-HYME 000005297”, Siobla rufipes n. sp., Malaise det. 1936; Lectotype, Siobla rufipes Malaise,

1945, Design Niu G. 2012; Siobla atra Malaise, 1945 Det. Niu G. (NRHS); Paralectotypes of S. rufipes: According

to Taeger (pers. comm.), in addition to the lectotype there are 35 males at the NRHS. 14 are from "Kambaiti 7000

ft.", 17 from "Kambaiti 2000 m", 3 "Kambaiti 1800m", and one without data. Only 3 of these specimens got

Malaise’s identification labels. The 33 specimens from 7000 ft. and 2000 m respectively, are considered to belong

to the type series: 1♂ “N. E. BURMA, Kambaiti, 7000ft, 23/4, R. MALAISE”; 3 ♂, same data but 24/4; 2 ♂, same

data but 28/4; 2 ♂, same data but 29/4; 4 ♂, same data but 22/5; 1 ♂, same data but 26/5; 1 ♂, same data but 5/6; 1

♂, same data but 2000 m and 4/4; 4 ♂, same data but 15/5; 12 ♂, same data but 1/6. The specimens bear the ID

numbers NHRS-HEVA 000001555 - NHRS-HEVA 000001585. 1♂, “N. E. BURMA, Kambaiti, 7000ft, 21/5, R.

MALAISE”, “Typus” “var. S. rufipes n. sp. infuscatus var., det. Malaise, 1936”, “Paralectotype, Siobla rufipes

Malaise, 1945, Design Niu G. 2012” (all NRHS). 13 ♂ same data as lectotype, but collecting days not recorded.

(BMNH); 1#m same data as lectotype but 2000m, 9. V. 1934 (HNHM); 1#m same data as lectotype but 1. V. 1934

(CSCS); 1 ♂, same data as the lectotype, but 28/4 ( MNCN, teste Taeger).

Other material: CHINA: Yunnan: .1♀, Heiwadi, Gongshan, Yunnan, 27.800°N, 98.590°′E, alt. 2000m, 6 Jun.

2009, Zhong Yihai leg. (CSCS), 1♂, Gongshan 10km NW, +27.79700, +98.58500, 2150m, 06.06.2009, Leg. S. M.

Blank, A. D. Liston & A. Taeger; Siobla atra Malaise, 1945 Det. Niu G. (SDEI) barcode: BOLD:ABV4520 (Taeger

pers. comm.).

Distribution. China (Yunnan); Myanmar.

Remarks. This species is close to S. carinoclypea Niu &Wei, 2010 but differs from it in the anterior margin

of clypeus truncate without a middle incision and without transverse carina (Fig. 7n, 7k); the postocellar area

weakly elevated (Fig. 7k), clearly below top of ocelli, and 1.5 × as broad as long; the lateral furrows of

postocellar area curved and deep in entire length (Fig. 7j); the ovipositor sheath as long as middle tibia; the

lancet with 16 serrulae and the middle serrulae each with about 18–20 distal fine teeth; the femora and tibia in

male almost entirely orange; the shortest distance between eyes below antennal sockets in front view in male

about as long as eye height.

Taeger (pers. comm.) assumes that the male types of S. atra belong to S. semipicta, and S. rufipes is the male of

S. atra . After careful study, we confirm that standpoint. Malaise (1945) recorded 30 rufipes specimens from

Kambaiti at 2000 m. Already in the NHRS collection 33 specimens are to be found, and further specimens in other

collections. Referring to Malaise's papers, it is obvious that he often estimated or rounded higher numbers of

specimens (Taeger, pers. comm.). As there is no indication to exclude specimens with the data given by Malaise, 13

additional specimens of S. rufipes from the BMNH, one from HNHM, one from CSCS, and one from MNCN were

labeled as paralectotypes.



Siobla carinoclypea Niu &Wei, 2010

(Figs 1c, 1d, 4c, 4d, 7a–c, 7r, 7o, 9e, 9r, 10o, 10p)

Siobla carinoclypea Niu & Wei, 2010b: 913. ♀, ♂, type locality: Mt. Huping, Hunan (China).

Description. Holotype: ♀. Length, 12 mm (Figs 1c, 4c). Body and legs black; narrow posterior margin of

pronotum dark brown, 2nd abdominal tergite with small white spots near spiracles; anterior of fore femur and most

of tibia and of tarsus brown, middle tarsus blackish brown, hind trochanter yellowish brown. Body hairs silver,

hairs on dorsal side of head pale brown. Wings hyaline, pterostigma and veins deep brown or blackish brown, basal

0.2 of pterostigma pale brown.

Punctures on head dense and coarse without shiny interspaces, labrum sparsely punctured; prescutum, scutum,

and anterior slope of mesoscutellum densely punctured, with narrow interspaces; lateral parts of mesoscutellum

sparsely punctured, interspaces shiny; posterior slope of mesoscutellum densely punctured, without interspaces;

posttergite shiny with microsculptured laterally; parapsides with large and sparse punctures and dense

microsculpture; metascutellum with anterior slope shiny and posterior slop densely punctured; metapostnotum

shiny with margins slightly microsculptured; middle and upper of mesepisternum densely and coarsely punctured,

without shiny interspaces, venter with large and shiny interspaces between small and sparse punctures; anepimeron

coarsely punctured, upper of katepimeron with large punctures, interspaces obviously longer than diameter of

punctures, middle and lower of katepimeron microsculptured; upper of metepisternum with dense and small

punctures, interspaces shiny, narrower than diameter of punctures, venter sparsely punctured, shiny; basin of

metepimeron microsculptured, dorsum with large punctures and posterior corner shiny. First abdominal tergite

microsculptured, shiny, lateral edges slightly punctured; other tergites obviously microsculptured, mat, lateral

edges of both 3rd and 4th tergites, posterior of 4th tergite, and most of 5th to 8th tergites obviously punctured.

Hairs on dorsum of head straight, about as long as diameter of lateral ocelli. Clypeus shallowly emarginate

(Fig. 7r), middle of clypeus with a transverse carina (Fig. 7o); malar space as long as transverse diameter of median

ocellus; shortest distance between eyes below antennal sockets in front view 1.1 × eye height; middle fovea

shallow and broad; interocellar furrow deep, postocellar furrow broad and shallow; postocellar area 1.2 × as broad

as long, distinctly elevated and about as high as top of ocelli, with an obscure middle ridge; lateral furrows straight,

parallel and gradually shallow posteriorly; head behind eyes nearly as long as eye in dorsal view; curved laterally

and then convergent posteriorly; genal carina developed, complete (Fig. 7a). Antenna as long as head, thorax and

basal two abdominal tergites together, as long as vein C, 2nd antennomere 1.5 × as long as broad, relative length of

3rd to 4th antennomeres as 1.8, 5th to 8th antennomeres weakly compressed, inner and outer sides of 5th to 8th

antennomeres with weak furrows, 7th antennomere 2.3 × as long as broad. Middle furrow of prescutum distinct;

mesoscutellum distinctly elevated, obviously higher than scutum. Metabasitarsus 4.7 × as long as broad, nearly as

long as following 4 tarsomeres combined and 1.4 × length of following 3 tarsomeres combined, hind inner tibial

spur 0.45 × length of metabasitarsus. Pulvilli of hind tarsus small. Ovipositor sheath 1.1 × length of middle tibia in

lateral view; exposed part of apical sheath about 2 × as long as broad, apical sheath 1.4 × as long as basal sheath,

apical sheath narrow in dorsal view, exposed part 4 × length of cerci, lateral setae on both sides of sheath straight,

forming an angle about 50 degrees. Lancet broadened before apex, with 18 serrulae (Fig. 9e), middle serrulae each

with 14–15 distal fine teeth (Fig. 9r).

Male. Length, 10.5 mm (Figs 1d, 4d). Body black; 2nd to 4th abdominal tergites, 2nd to 5th abdominal sternites,

and most of 6th and 7th sternites yellowish brown; legs yellowish brown, each coxa, fore and middle trochanter,

dorsum of base of fore femur, stripe on dorsum of middle femur, apical 0.2 and stripe on dorsum of hind femur, and

apical 0.3 of hind tibia black; similar to female in structure, but malar space 0.6 × transverse diameter of median

ocellus (Fig. 7c); shortest distance between eyes below antennal sockets in front view 0.9 × eye height; head behind

eyes 0.5 ×eyes in dorsal view, curved laterally and then distinctly convergent posteriorly; hairs on temple as long as

diameter of lateral ocelli (Fig. 7b); genitalia as in Figs 10o, 10p.

Variation. Females 10.5–12 mm, males 10.5–11.5mm.

Specimens examined. 7♀, 11♂. Hunan: 1♀, “Jiangping, Hupingshan, 2004-VI-9, 1200–1600m, Zhou Hu”;

[red] ”Holotype”; “CSCSHT 00810020” (CSCS); 1♂, Jiangping, Hupingshan, 2004-VI-9, 1200–1600m, Zhou Hu

leg.; [yellow] paratype; 2♀8♂, Jiangping, Hupingshan, 2004-VI-1, 1200–1600m, Zhou Hu leg.; [yellow] paratype;

1♂, Jiangping, Hupingshan, 2004-VI-1, 1200–1600m, Zhou Hu leg.; 1♂, Huangsang, Suining, 2005-IV-21, 600–



900m, Zhou Hu leg.; Guizhou: 1♀, Linchang, Leigongshan, 2005-VI-1, 1600m, Xiao Wei Leg.; [yellow] paratype;

Shaanxi: 1♀, Yuantou, Jialingjiang, E.106º59.026´, N.34º13.177´, 1570m, 2007-V-26, Jiang Xiaoyu leg.; [yellow]

paratype; Guangxi: 1♀, Tingcheping, Cenwanglaoshan, N 27º12´16´´, E.120º13´41´´, 1875m, 2012.IV. 29, Wei

Meicai, Niu Gengyun; Hubei: 1♀, Guitouwan 2150m, N 31º28´, E.110º09´, Shennongjia, 28.V.2011, A. Shinohara

leg.(NSMT).

Distribution. China (Hunan, Guizhou, Shaanxi, Hubei, Guangxi).

Remarks. The new species is similar to S. listoni and S. parallela but differs from them in clypeus with an

obtuse transverse ridge and a small apical incision; the posterior margin of pronotum, tegula, the middle trochanter,

the hind femur, tibia and tarsus black (the posterior of pronotum at most very narrowly margined with brownish

line); the abdominal tergites and sternites black, only second tergite with a small white spot near spiracle; the hind

femur in male with black macula but at least basal 4/5 yellow brown in outer side. The new species differs from S.

listoni also in the forewings hyaline; antenna slender and the antennomeres 5–7 not dilated; and the apex of

mesoscutellum round. The new species differs from S. parallela also in the pterostigma black brown; the apex of

apical sheath not acute in lateral view; the posttergite with a middle carina; the antennomeres 2–3 and posttergite

without pale spot. See the remarks under S. atra for the difference between S. carinoclypea and S. atra.

Siobla formosana Takeuchi, 1927

(Figs 1e, 1f, 4e, 4f, 8a–c, 9k, 9x, 10g, 10h)

Siobla formosana Takeuchi, 1927: 208. ♀, type locality: Musha, Taiwan (China).Siobla formosana: Niu & Wei, 2011: 162. redescription.

Distribution. China (Taiwan).

Remarks. This species was redescribed in detail in Niu & Wei (2011). Siobla formosana is very close to

Siobla fumipennis Malaise, 1945 but differs from it in the basal part of wings in both sexes hyaline; the pterostigma

dark brown; the second abdominal tergite entirely yellow brown and metabasitarsus pale brown in female; the

abdominal tergite 4 in male largely yellow brown; and the trochanters usually yellow brown. S. formosana is also

similar to S. jiangi and S. zuoae. See the key above for the differences between them.

Siobla fumipennis Malaise, 1945

(Figs 1g, 1h, 4g, 4h, 8d–f, 9l, 9y, 10i, 10j)

Siobla fumipennis Malaise, 1945: 122. ♂, type locality: Arisan, Taiwan (China).Siobla fumipennis: Niu & Wei, 2011: 166. redescription.

Distribution. China (Taiwan).

Remarks. This species was redescribed in detail in Niu & Wei (2011). It is close to S. formosana Takeuchi,

1927 but differs from the latter in the forewing largely (female) or entirely (male) infuscate; the pterostigma black

brown; the second abdominal tergite in female black with small pale lateral spot, the hind tarsus largely black; the

fourth abdominal tergite in male black without pale spot, the dorsal side of hind tibia black entirely, and each

trochanter largely black brown.

Siobla jiangi Niu & Wei, sp. nov.

(Figs 2a, 2b, 4i, 4j, 8g–i, 8m, 9m, 9z, 10k, 10l)

Description. Holotype: ♀. Length, 13.5 mm (Figs 2a, 4i). Black, palpi, middle of labrum, spot on dorsum of 1st

antennomere, anterior margin of 2nd antennomere, posterior margin of pronotum (greatest width 0.9 × length of

lateral ocellus), spot on anterior of tegula, and spot on middle of mesepimeron pale brown, 2nd and 3rd abdominal

tergites entirely, and anterior half of 4th tergite, 2nd to 4th sternites entirely yellowish brown, middle of lateral edges

of 8th tergite, most of 10th tergite, cerci, and posterior margin of sheath pale brown; legs yellowish brown with



following black: fore and middle coxae entirely, most of hind coxa, most of fore and of middle trochanters, venter

of basal half of fore and of middle femurs, and apical half of hind femur; hairs on dorsum of body pale brown, hairs

on pleuron silver; wings uniformly infuscated, pterostigma, vein C, anterior side of vein Sc+R, vein R1 entirely and

base of vein A pale brown, other veins black brown.

Head densely punctured, middle of temple and of postocellar area with visible interspaces, narrower than

diameter of punctures, microsculptured; clypeus punctured with narrow interspaces, labrum sparsely punctured;

prescutum and scutum densely punctured, interspaces narrow, microsculptured; anterior slop of mesoscutellum

densely punctured, posterior slope densely and coarsely punctured, without interspaces; posttergite shiny;

parapsides with large and sparse punctures and dense microsculpture; metascutellum with anterior slope shiny and

posterior slop densely punctured; metapostnotum shiny with margins slightly microsculptured; middle and upper

of mesepisternum densely and coarsely punctured, venter with large and shiny interspaces between small and

sparse punctures; ventral anterior corner of mesepisternum with a distinct shiny patch; anepimeron coarsely

punctured, katepimeron microsculptured, posterior shiny; upper metepisternum densely punctured, mat, and venter

sparsely punctured, shiny; basin of metepimeron shiny, margin of basin microsculptured, dorsum of metepimeron

with large punctures and posterior corner shiny. First abdominal tergite shiny without microsculpture, lateral edges

hardly punctured; 2nd tergite weakly microsculptured, other tergites microsculptured, 4th to 8th tergites punctured.

Hairs on dorsum of head straight, as long as diameter of lateral ocelli. Clypeus flat, anterior margin truncate;

malar space as long as transverse diameter of median ocellus; shortest distance between eyes below antennal

sockets in front view nearly as long as eye height; middle fovea broad and deep; interocellar furrow deep,

postocellar furrow broad and shallow; postocellar area 1.8 × as broad as long, weakly elevated with an obtuse

carina; lateral furrows deep, curved, divergent posteriorly; head behind eyes 0.8 × length of eye in dorsal view;

curved laterally and then convergent posteriorly; genal carina sharp, complete (Fig. 8g). Antenna as long as head,

thorax and 1st abdominal tergite together, slightly shorter than vein C, 2nd antennomere 1.3 × as long as broad,

relative length of 3rd to 4th antennomeres as 1.5, 5th to 8th antennomeres weakly compressed, inner and outer sides of

5th to 8th antennomeres with weak furrows, 7th antennomere 2 × as long as broad. Middle furrow of prescutum

shallow (Fig. 8m); mesoscutellum elevated, hardly higher than scutum. Metabasitarsus 5.3 × as long as broad,

about 1.2 × length of following 3 tarsomeres combined, hind inner tibial spur 0.5 × length of metabasitarsus.

Pulvilli of hind tarsus weakly developed, 1st pulvillus 0.5 × basal breadth and 0.3 × apical breadth of

metabasitarsus, distance between basal two pulvilli 2 × length of 2nd pulvillus. Ovipositor sheath as long as hind

femur, and 1.1 × length of middle tibia in lateral view, exposed part of apical sheath about 1.4 × as long as broad,

apical sheath 1.5 × as long as basal sheath. Lancet with 22 serrulae, (Fig. 9m), middle serrulae each with 6–8 distal

fine teeth (Fig. 9z).

Male. Length, 11.5 mm (Figs 2b, 4j). Similar to female in structure and color, but entire 3rd abdominal tergite,

most of 4th tergite, and most of 6th sternite yellowish brown, 7th to 9th sternites entirely black, pale posterior margin

of pronotum nearly absent, antenna and tegula entirely black, mesepimeron without pale spot, apical 0.2 of hind

tibia black; malar space line linear, 0.2 × transverse diameter of median ocellus (Fig. 8i); head in front view with

lower interocular distance 0.8 × eye height; head behind eyes 0.5 × eyes in length in dorsal view, narrowing

posteriorly; hairs on dorsum of head 1.2 × lateral ocelli (Fig. 8h); genitalia as in Figs 10k, 10l.

Variation. The inner side of the apex of hind tibia is sometimes with a black spot.

Etymology. This species is named after the surname of Dr. Jiang Jigang. He collected many valuable sawfly

specimens from Mt. Shennongjia, Hubei, China.

Specimens examined. 8♀, 27♂. Hubei: Holotype: 1♀, Qianjiaping, Shennongjia, E.110º24.023´,

N.31º24.356´, 1789m, 2009-VII-4, Zhao Fu leg CSCSHT 00810021 (CSCS); Paratypes: 1♀2♂, Yaolangou,

Shennongjia, E.110º22.878´, N.31º29.104´, 1430m, 2009-VII-13, Zhao Fu leg.; 3♂, Yinyuhe, Shennongjia,

E.110º18.799´, N.31º29.821´, 2046m, 2008-VII-29, Zhao Fu leg.; 4♀11♂, Qianjiaping, Shennongjia,

E.110º24.023´, N.31º24.356´, 1789m, 2009-VII-3–7, Zhao Fu and Jiao Zhao leg.; 10♂, Zhangbaohe, Shennongjia,

E.110º24.570´, N.31º26.765´, 1156m, 2009-VI-12–13, Zhao Fu leg.; 1♀, Shennongjia, 1985-VI-24, Mao

Xiaoyuan leg.; 1♂, Yaozikou, Shennongjia, Yichang, E.110º20.986′, N.31º30.104′, 1920m, 2011.VII.21, Wei

Meicai & Niu Gengyun leg.; CSCS-Hym-M00680; 1♀1♂, Qianjiaping, Shennongjia, E.110º24.023´,

N.31º24.356´, 1789m, 2009-VII-4–6, Zhao Fu and Jiao Zhao leg. (USNM).

Distribution. China (Hubei).

Remarks. This new species is similar to S. zuoae, but differs from it in the forewings distinctly infuscate;



tegula and the base of fore and middle femora black; the abdominal tergite 4 largely yellow brown; the

metepimeron with a central pale brown spot; the interspaces between punctures on mesonotum distinctly narrower

than diameter of a puncture; the ovipositor sheath as long as hind femur; lancet very long and slender with 21

serrulae, the middle serrulae each with 5–6 distal teeth; the valviceps of penis valve broad and elliptical. The lancet

of this new species is distinctly longer than other species in this group (Fig 9l).

Siobla listoni Niu & Wei, 2012

(Figs 2c, 2d, 4k, 4l, 7g–i, 9f, 9s, 10c, 10d)

Siobla listoni Niu et al., 2012: 407. ♀, type locality: Mt. Gongshan, Yunnan (China).

Distribution. China (Yunnan, Shaanxi, Hubei).

Remarks. The species is similar to S. parallela sp. nov. but differs from it in the forewing infuscate and

pterostigma dark brown; the antenna short and stout, with the subapical antennomeres distinctly enlarged, the 6th

antennomere less than 2 × as long as broad; the breadth of apical sheath in lateral view distinctly broader than

breadth of metabasitarsus, apical sheath 1.4 × as long as basal sheath; the middle serrulae each with 3–4 distal

teeth; the dorsal side of mesoscutellum flat with the posterior margin obtusely truncate; the posttergite and

metapostnotum microsculptured, posttergite with a distinct middle carina. The species is also somewhat similar to

S. acutitheca Niu & Wei, 2010, but differs from it in antenna entirely black in both sexes and the 5th to 8th

antennomeres distinctly enlarged; the posterior margin of pronotum broadly reddish brown; the postocellar area

elevated with lateral furrows only weakly divergent backwards; the ovipositor sheath very narrow; malar space as

long as diameter of lateral ocellus; the posterior corner of mesoscutellum in female sharp; and the four anterior

trochanters black in both sexes.

According to results from SDEI, one female (paratype) 10.06.2009, Gongshan 10km NW 2100 m, 27.798°N

98.583°E, 2100m, leg. S. M. Blank, A. D. Liston & A. Taeger (SDEI) shares the barcode cluster BOLD:ABV4520

with S. atra (similarity 98.39%; one male, 06.06.2009, Gongshan 10km NW 2100 m, 27.798°N 98.583°E, 2100m,

leg. S. M. Blank, A. D. Liston & A. Taeger).

Siobla parallela Niu & Wei, sp. nov.

(Figs 2e, 2f, 5a, 5b, 7d–f, 9g, 9t, 10q, 10r)

Description. Holotype: ♀. Length, 10 mm (Figs 2e, 5a). Black, labrum yellowish white, palpi, apical half of 2nd

antennomere, base of 3rd antennomere, posterior margin of pronotum (greatest width 1.0 × length of lateral ocellus),

tegula, apex of mesoscutellum, posterior ridge of mesoparapsides and of metaparapsides, entire 2nd abdominal

tergite, most of 3rd tergite, 2 spots on 4th tergite, 2nd to 4thsternites, and most of 5th sternites yellowish brown, middle

of 10th tergites, cerci and posterior margin of sheath pale brown; legs yellowish brown, most of fore coxa, basal half

of middle and of hind coxae, and apical half of hind femur black, irregular macula on apical of hind tibia dark

brown; body hairs silver; wings hyaline, pterostigma pale brown.

Head densely and coarsely punctured without interspaces, labrum sparsely punctured; prescutum, parts of

scutum, and anterior slope of mesoscutellum densely punctured, interspaces narrow, lateral parts of mesoscutellum

punctured with shiny interspaces; posterior slope densely and coarsely punctured, without interspaces; posttergite

and metapostnotum shiny with margins microsculptured; parapsides with large and sparse punctures and dense

microsculpture; metascutellum with anterior slope shiny and posterior slop densely punctured; middle and upper of

mesepisternum densely and coarsely punctured, venter with large and shiny interspaces between small and sparse

punctures; anepimeron coarsely punctured, katepimeron microsculptured, posterior margin shiny; metepisternum

with upper densely punctured, mat, and venter sparsely punctured, shiny; basin and posterior corner of

metepimeron shiny, dorsum with large punctures. First abdominal tergite hardly microsculptured, shiny; punctures

on lateral edges shallow; other tergites obviously microsculptured, parts of lateral edges of 3rd tergite, lateral edges

and posterior margin of 4th tergite and 5th to 8th tergites mostly punctured.





sockets in front view1.1 × eye height; middle fovea broad and shallow; interocellar furrow deep, postocellar furrow

broad and shallow; postocellar area 1.2 × as broad as long, weakly elevated with an obtuse carina; lateral furrows

shallow, straight, parallel posteriorly; head behind eyes 0.9 × length of eye in dorsal view; curved laterally and then

convergent posteriorly; genal carina sharp, complete (Fig. 7d). Antenna as long as head, thorax and 1st abdominal

tergite together, hardly shorter than vein C, 2nd antennomere 1.3 × as long as broad, relative length of 3rd to 4th

antennomeres as 1.6, 5th to 8th antennomeres weakly compressed, enlarged, inner and outer sides of 6th to 8th

antennomeres with weak furrows, 7th antennomere about 2 × as long as broad. Middle furrow of prescutum narrow

but shallow; mesoscutellum obviously elevated, slightly higher than scutum. Metabasitarsus 5.5 × as long as broad,

about 1.2 × length of following 3 tarsomeres combined, hind inner tibial spur 0.4 × length of metabasitarsus.

Ovipositor sheath 1.1 × middle tibia, venter margin curved, exposed part of apical sheath about 2 × as long as

broad; apical sheath narrow in dorsal view, exposed part 4.5 × length of cerci, lateral setae on both sides of sheath

forming an angle about 40 degree. Lancet broadened before apex, with 14 serrulae (Fig. 9g), middle serrulae each

with 10–12 distal fine teeth (Fig. 9t).

Male. Length, 9 mm (Figs 2f, 5b). Similar to female in structure and color, but entire 2nd and 3rd abdominal

tergites, most of 4th tergite, and entire 2nd to 5th sternites yellowish brown; legs yellowish brown, most of each coxa,

apical 0.5 to 0.6 of hind femur, apical 0.25 of hind tibia black, base of fore 1st trochanter and base of fore femur

dark brown; malar space 0.8 × transverse diameter of median ocellus (Fig. 7f); head in front view with lower

interocular distance 0.9 × eye height; head behind eyes 0.6 × eyes in length in dorsal view, curved in middle and

narrowing posteriorly (Fig. 7e); genitalia as in Figs 10q, 10r.

Variation. The pale spot on the dorsal side of base of flagellum, the pale spot on tergite 4 in female and the

black macula on hind femur in male slightly vary in size.

Etymology: This species is named after the lateral furrows of postocellar area which are parallel to each other.

Specimens examined. 9♀, 4♂. Hunan: Holotype: 1♀, Huangsang, Suining, 600–900m, 2005-IV-21, Lin Yang

leg.; CSCSHT 00810023 (CSCS); Paratypes: 5♀4♂, Huangsang, Suining, 600–900m, 2005-IV-21, Lin Yang, Liu

Weixing, Liu Shouzhu, Zhou Hu leg.; 1♀, Taoyuandong, Yanling, 1999-IV-24, 900–1000m, Wei Meicai leg.; 1♀,

CSCS13012, Yunfengge, Mt. Yun, Wugang, Shaoyang, E.110º37.169´, N.26º38.983´, 1170m, 2013-IV-14, Li

Zejian leg.; Guizhou: 1♀, Linchang, Leigongshan, 2005-V-31, 1600m, Liang Minwen leg..

Distribution. China (Hunan, Guizhou).

Remarks. The new species is similar to S. listoni Niu & Wei, 2012 but differs from it in the forewing hyaline

and pterostigma pale brown; the antenna long and slender, with the subapical antennomeres very weakly enlarged,

the 6th antennomere more than 2 × as long as broad; the breadth of apical sheath in lateral view distinctly narrower

than breadth of metabasitarsus, apical sheath 2 × as long as basal sheath; the middle serrulae each with 10–12 distal

teeth; the dorsal side of mesoscutellum roundly elevated with the posterior margin round; the posttergite and

metapostnotum largely polished, posttergite without a middle carina.

Siobla pseudoplesia Niu & Wei, 2012

(Figs 2g, 2h, 5c, 5d, 6j–n, 9h, 9u, 10w, 10x)

Siobla pseudoplesia Niu et al., 2012: 410. f #, type locality: Mt. Shennongjia, Hubei (China).

Distribution. China (Ningxia, Shaanxi, Shanxi, Henan, Hubei, Sichuan).

Remarks. The species is similar to S. acutitheca Niu & Wei, 2010 but differs from it in the ovipositor sheath

distinctly shorter than middle tibia, the apical sheath very narrow in lateral view and acute at apex, the middle

breadth of apical sheath about half breadth of the apex of hind tibia; the serrulae weakly sclerotized and almost flat,

the 10th serrula with 10–12 minute teeth; the postocellar area as broad as long; the interspaces between punctures on

mesonotum microsculptured, almost mat; the abdominal tergite 1 weakly microsculptured, tergites 2–9 hardly

microsculptured; and the first pulvillus small, distinctly shorter than half apical breadth of metabasitarsus.



Siobla rufopropodea Wei, 1998

(Figs 3c, 3d, 5g, 5h, 9d, 9q, 10m, 10n)

Siobla rufopropodea Wei, 1998: 143. ♂, type locality: Luanchuan, Henan (China).

Description. ♀. Length, 12 mm (Figs 3c, 5g). Head black, labrum, palpi, posterior of mandible and antenna

yellowish brown, apex of mandible dark reddish brown, prothorax and mesothorax black, posterior margin of

pronotum (greatest width 1.5 × length of lateral ocellus), tegula, posterior ridge of mesoparapsides and posterior

margin of posttergite yellowish brown; metathorax yellowish brown, metascutellum black; abdomen black, 1st to 4th

abdominal tergites, most of 5th abdominal tergite, lateral edges of 8th abdominal tergite, 9th to 10th abdominal

tergites, 1st to 5th sternites and apical of sheath yellowish brown; legs yellowish brown, base of fore coxa, and apical

0.25 of hind femur black; body hairs yellowish brown; wings yellowish hyaline, pterostigma yellowish brown.

Head densely and coarsely punctured, without any interspaces, mat; labrum shiny with minute and sparse

punctures, clypeus punctured with shiny interspaces; prescutum and scutum densely punctured, interspaces narrow,

microsculptured; mesoscutellum densely punctured without interspaces; middle of posttergite shiny,

microsculptured laterally; parapsides with large and sparse punctures and dense microsculpture; metapostnotum

shiny; middle and upper of mesepisternum densely and coarsely punctured, venter with large and shiny interspaces

between small and sparse punctures; anepimeron coarsely punctured, katepimeron microsculptured, posterior

shiny; metepisternum with anterior and posterior margin shiny; upper of metepisternum shallowly and densely

punctured, venter sparsely punctured, shiny; basin and posterior corner of metepimeron shiny, dorsum with large

punctures. Abdomen microsculptured, shiny, lateral edges of 1st abdominal tergite and 6th to 8th abdominal tergites

punctured.



sockets in front view 1.1 × as long as eye height; middle fovea broad and deep; interocellar furrow narrow and

deep, postocellar furrow broad and shallow; postocellar area 1.7 × as broad as long, obviously lower than top of

ocelli; lateral furrows deep, curved, obviously divergent posteriorly; head behind eyes 0.8 × length of eye in dorsal

view; curved laterally and then convergent posteriorly; genal carina sharp, complete. Antenna as long as head,

thorax, and 1st abdominal tergite together, obviously short than vein C, 2nd antennomere 1.2 × as long as broad,

relative length of 3rd to 4th antennomeres as 1.5, 5th to 8th antennomeres weakly compressed, not enlarged, inner and

outer sides of 6th to 8th antennomeres with weak furrows, 7th antennomere about 2 × as long as broad. Middle furrow

of prescutum distinct; mesoscutellum elevated, slightly higher than scutum. Metabasitarsus 5.5 × as long as broad,

about as long as following 3 tarsomeres combined, hind inner tibial spur 0.5 × length of metabasitarsus. Pulvilli of

hind tarsus weakly developed, 1st pulvillus 0.5 × basal breadth and 0.3 × apical breadth of metabasitarsus, distance

between basal two pulvilli 5 × length of 2nd pulvillus. Ovipositor sheath as long as middle tibia, apical sheath 1.3 ×

as long as basal sheath. Lancet with 16 serrulae, (Fig. 9d), middle serrulae each with 5–6 distal fine teeth (Fig. 9q).

Male. Length, 9.5 mm (Figs 3d, 5h). Similar to female in structure and color, but base of 1st antennomere

black; greatest width of pale posterior margin of pronotum 0.9 × length of lateral ocellus; extreme anterior line of

metapleuron black, 1st to 5th abdominal tergites and sternites yellowish brown. Hairs on dorsum of head 1.1 × as

long as diameter of lateral ocelli; shortest distance between eyes below antennal sockets in front view as long as

eye height; postocellar area 2 × as broad as long, malar space 0.5 × transverse diameter of median ocellus; head in

front view with lower interocular distance 0.9 × eye height; head behind eyes 0.4 × eyes in length in dorsal view,

curved in middle and narrowing posteriorly. Genitalia as in Figs 10m, 10n.

Variation. The anterior half of metapleuron of one male and entire 1st antennomere black.

Specimens examined. 4♀, 16♂. Henan: 1♂, “Luanchuan, 1996-VII-13, Wei Meicai”; [red] ”Holotype”;

“CSCSHT 00810025” (CSCS); 2♂, Luanchuan, 1996-VII-13, Wei Meicai leg.; [yellow] paratype; Hubei: 1♂,

Guitouwan, Shennongjia, E.110º08.872´, N.31º28.439´, 2150m, 2010-V-24, Li Zejian leg.; 2♂, CSCS11021,

Guitouwan, Shennongjia, Yichang, E.110º08.872′, N.31º28.439′, 2150m, 2011.V.19, Li Zejian leg.; 1♀5♂,

CSCS11022, Guitouwan, Shennongjia, Yichang, E.110º08.872′, N.31º28.439′, 2150m, 2011.V.25–28, Li Zejian

leg.; 1♀, CSCS11021, Guitouwan, Shennongjia, Yichang, E.110º08.872′, N.31º28.439′, 2150m, 2011.V.19, Li

Zejian leg.; CSCS-Hym-M00681; 1♀4♂, Guitouwan 2150m, N 31º28´, E.110º09´, Shennongjia, 28.V.2011, A.



Shinohara leg.(NSMT); Shaanxi: 1♀, Kaitianguan 2000m, 34 00N 107 51E, Mt. Taibaishan, Qinling Mts., 6. VI.

2007, A. Shinohara; NSMT-HYM, 62705 (NSMT); 1♂, nr. ropeway 2700m, Kaitianguan Tanguy, Mt. Taibaishan,

Qinling Mts., 4. VI. 2007, A. Shinohara; NSMT-HYM, 62706 (NSMT).

Distribution. China (Henan, Hubei, Shaanxi).

Remarks. The species differs from all other species of the Siobla formosana group in the metanotum and

metapleuron largely, the first abdominal tergite entirely shining yellow brown; wings hyaline with distinct yellow

tinge, venation largely yellow brown; the hind coxa and hind tibia entirely yellow brown; and the malar space as

long as diameter of the lateral ocellus. The female of the species is described for the first time.

Siobla semipicta Malaise, 1945

(Figs 3e, 3f, 5i, 5j, 7l, 7m, 9i, 9v, 10s, 10t)

Siobla semipicta Malaise, 1945: 124. ♀, type locality: Kambaiti, (Myanmar).Siobla semipicta fasciata Malaise, 1945: 124. ♀, type locality: Kambaiti, (Myanmar). Syn. nov.Siobla atra: Malaise, 1945: 123. ♂, misidentification.

Description. Lectotype: ♀. Length, 10 mm (Figs 3e, 5i). Black, palpi, posterior margin of pronotum (greatest

width 0.4 × length of lateral ocellus), and obscure spots on lateral edges of 2nd abdominal tergite dirty brown, 10th

tergite and cerci pale brown; legs orange brown, coxae except apical margin, fore and middle 1st trochanter, apical

half of hind femur and apical 0.3 of hind tibia black; body hairs silver; wings hyaline, pterostigma blackish brown.

Head densely punctured, clypeus, inner orbit, and postocellar area with visible interspaces, narrower than diameter

of punctures, microsculptured; punctures on labrum minute and sparse; mesonotum densely punctured, with

interspaces on posterior of prescutum, and middle of scutum as long as or slightly broader than diameter of

punctures, without microsculpture, shiny; interspaces on middle of anterior slope of mesoscutellum 2 × diameter of

punctures, shiny, other area of mesoscutellum densely punctured without interspaces; posttergite shiny; parapsides

with large and sparse punctures and dense microsculpture; metascutellum with anterior slope shiny and posterior

slope densely punctured; metapostnotum and parapsides microsculptured; middle and upper of mesepisternum

densely and coarsely punctured, venter with large and shiny interspaces between small and sparse punctures;

anterior corner of venter with a small shiny patch; anepimeron coarsely punctured, katepimeron microsculptured,

posterior shiny; metepisternum with upper densely punctured, mat, and venter sparsely punctured, shiny; basin of

metepimeron shiny, margin of basin microsculptured, dorsum of metepimeron with large punctures and posterior

corner shiny. abdominal tergites microsculptured, middle and lateral edges of 1st abdominal tergite densely

punctured (Fig 7l), 3rd to 8th tergites punctured.

Hairs on dorsum of head straight, as long as diameter of lateral ocellus, Hairs on mesopleuron 0.9 × as long as

diameter of lateral ocellus. Clypeus flat, anterior margin truncate; malar space as long as transverse diameter of

median ocellus; shortest distance between eyes below antennal sockets in front view 1.1 × as long as eye height;

middle fovea broad and shallow; interocellar furrow narrow and deep, postocellar furrow broad and shallow;

postocellar area 1.6 × as broad as long, obviously lower than top of ocelli, middle weakly elevated; lateral furrows

deep, nearly straight, divergent posteriorly; head behind eyes 0.8 × length of eye in dorsal view; curved laterally

and then convergent posteriorly; genal carina sharp, complete. Antenna shorter than head, thorax and 1st and 2nd

tergites together, as long as vein C, 2nd antennomere 1.3 × as long as broad, relative length of 3rd to 4th antennomeres

as 1.6, 5th to 8th antennomeres hardly compressed, not enlarged, inner and outer sides of 6th to 8th antennomeres with

weak furrows, 7th antennomere about 2.2 × as long as broad. Middle furrow of prescutum shallow; mesoscutellum

obviously elevated, hardly higher than scutum. Metabasitarsus 6.5 × as long as broad, about 1.3 × length of

following 3 tarsomeres combined, hind inner tibial spur 0.5 × length of metabasitarsus. Pulvilli of hind tarsus

weakly developed, 1st pulvillus 0.7 × basal breadth and 0.5 × apical breadth of metabasitarsus, distance between

basal two pulvilli 2.6 × length of 2nd pulvillus. Ovipositor sheath as long as middle tibia, exposed part of apical

sheath about 1.3 × as long as broad; apical sheath 1.4 × length of basal sheath. Lancet with 16 serrulae (Fig. 9i),

middle serrulae each with 8–10 distal fine teeth (Fig. 9v).

Male. Length, 10.5 mm (Figs 3f, 5j). Similar to female in structure and color, but pronotum and legs black,

fore and middle femora black with anterior of apical 0.3 to 0.4 orange brown, 2nd and 3rd abdominal sternites



yellowish white; malar space linear, 0.2 × transverse diameter of median ocellus (Fig. 7m); head in front view with

lower interocular distance 0.8 × eye height; head behind eyes 0.5 × eyes in length in dorsal view, curved in middle

and narrowing posteriorly. Genitalia as in Figs 10s, 10t.

Variation. The second abdominal tergite of one female is largely reddish brown. This was described as S.

semipicta fasciata Malaise, 1945.

Specimens examined. MYANMAR: Lectotype of Siobla semipicta (hereby designated) ♀, “N. E. BURMA,

Kambaiti, 7000ft, 29/5, R. MALAISE”; “Typus”; “Siobla semipicta Malaise det. 1936”;”NHRS-HYME

000005296”; “Lectotype, Siobla semipicta Malaise, 1945, Design Niu G. 2012” (NRHS).

Paralectotypes of Siobla semipicta: (Taeger, pers. comm..): In the NRHS were four females under S. semipicta.

One of these specimens fits the description of S. semipicta fasciata and is considered to be the holotype of the latter

nominal taxon. The remaining 3 syntypes show a distinct variability regarding the abdominal coloration as noted

by Malaise. 1♀ , same data as the lectotype but 10/6, NHRS-HEVA 000001553; 1♀ , same data as the lectotype but

9/6, NHRS-HEVA 000001554 (both NHRS); 1♀ , same data as the lectotype but 29/5 (BMNH).

Holotype of Siobla semipicta fasciata: ♀, "N.E. BURMA Kambaiti 7000 ft. 15/5 R. Malaise"; "Paratypus";

"Siobla semipicta n. sp. Malaise det. 1936"; "NHRS-HEVA 000001552".

Paralectotypes of Siobla atra: 1♂, N. E. BURMA, Kambaiti, 7000ft, 24/5, R. MALAISE (HYME-NHRS

000005305); 1♂ same data but 8/5; 1 ♂ same data but 14/5; 4 ♂ same data but 15/5; 3 ♂ same data but 16/5; 4 ♂

same data but 17/5; 2 ♂ same data but 29/5; 1♂ same data but 1/6; 1♂ same data but 4/6; 1♂ same data but 5/6; 1♂

same data but 9/6; 1♂ same data but 10/6 (NHRS-HEVA 000001608- NHRS-HEVA 000001629).

Other specimens: 21 #♂m from Kambaiti, leg. Malaise (details not recorded).

CHINA: Yunnan: 7♀53♂, Xiaoheishan, Longling, Yunnan, E.98º45.574′, N.24º41.713′, 2009-VI-2, Wei

Meicai, Niu Gengyun, Li Zejian; 4♂, Yaojiaping, Lushui, Yunnan, E.98.710º, N. 25.975°, 2550m, 2009-VI-6, Xiao

Wei, Zhong Yihai; 4♂, Gaoligongshan, Longling, Yunnan, E.98º46.062′, N.24º49.700′, 2145m, 2009-VI-2, Zhong

Yihai; 4♂, Houqiaozhen, Tengchong, Yunnan, E.98º12.665′, N.25º21.990′, 2196m, 2009-VI-1, Zhong Yihai, Xiao

Wei.

Distribution. China (Yunnan); Myanmar.

Remarks. The female of Siobla semipicta Malaise, 1945 is slightly similar to the female of S. atra Malaise,

1945, and therefore Malaise misidentified the males of semipicta as atra. See the key above for the differences

between the two species. S. semipicta is also quite similar to S. punctata (Cameron, 1899) of Siobla grahami group

in body color but differs from it in the dense punctures on the dorsal side of mesoscutellum.

Siobla takeuchii Shinohara, Wei & Niu, 2013

Siobla takeuchii Shinohara, Wei & Niu: real page” (1108Nui). ♀, type locality: Honshu, (Japan).

Distribution. Japan (Hokkaido, Honshu, Kyushu).

Remarks. This species is similar to S. jiangi and S. zuoae. See the key above for the differences between

them.

Siobla weiweii Niu & Wei, sp. nov.

(Figs 6a, 6b, 6c, 6d, 9b, 9o)

Description. Holotype: ♀. Length, 12 mm (Figs 6a, 6b). Black, labrum blackish brown, palpi dirty brown, entire

2nd to 4th abdominal tergites and middle of 10th tergite, 2nd to 5thsternites, middle longitudinal stripe on 7th sternites,

and cerci pale brown; antenna yellowish brown, most of 1st and of 2nd antennomeres and base of 3rd antennomere

black, 8th and 9th antennomeres blackish brown; legs yellowish brown, fore and middle coxae, most of hind coxa,

basal margin of fore femur, basal 0.2 of middle femur, and apical 5/6 of hind femur black, spot on venter of apex of

hind tibia dark brown; body hairs silver; wings hyaline, pterostigma brown except extreme base pale brown.

Head densely punctured, punctures on labrum fine and sparse; prescutum, scutum and anterior slope of

mesoscutellum densely punctured, interspaces narrow; punctures on lateral parts of mesoscutellum obvious and



sparse, interspaces shiny; posterior slope of mesoscutellum densely punctured, without interspace; posttergite and

metapostnotum shiny with margins slightly microsculptured; mesoparapsides with large and sparse punctures and

dense microsculpture; metascutellum with anterior slope shiny and posterior slop densely punctured;

metapostnotum shiny with margins slightly microsculptured; middle and upper of mesepisternum densely and

coarsely punctured, venter with large and shiny interspaces between small and sparse punctures; anepimeron

coarsely punctured, katepimeron microsculptured, posterior shiny; metepisternum with upper densely punctured,

interspaces narrow, feebly shiny, and venter sparsely punctured, shiny; basin of metepimeron shiny, dorsum of

metepimeron with large punctures, posterior corner shiny. First abdominal tergite shiny with very weak

microsculpture, lateral edges hardly punctured; other tergites weakly microsculptured, lateral edges of 4th tergite

and entire of 5th to 8th tergites punctured.

Hairs on dorsum of head straight, 1.2 × as long as diameter of lateral ocellus. Middle of clypeus with

transverse carina, anterior margin truncate; malar space 0.9 × as long as transverse diameter of median ocellus;

shortest distance between eyes below antennal sockets in front view as long as eye height; middle fovea broad and

shallow; interocellar furrow narrow and deep, postocellar furrow narrow and shallow; postocellar area 1.3 × as

broad as long, obviously lower than top of ocelli, middle obviously elevated; lateral furrows deep, nearly straight,

divergent posteriorly; head behind eyes 0.8 × length of eye in dorsal view; curved laterally and then convergent

posteriorly; genal carina sharp, complete (Fig.6c). Antenna as long as head, thorax, and 1st abdominal tergite

together, slightly shorter than vein C, 2nd antennomere 1.4 × as long as broad, relative length of 3rd to 4th

antennomeres as 1.8, 5th to 8th antennomeres weakly compressed, not enlarged, inner and outer sides of 6th to 8th

antennomeres with weak furrows, 7th antennomere about 1.9 × as long as broad. Middle furrow of prescutum deep;

mesoscutellum elevated with a peak, higher than scutum (Fig. 6d). Metabasitarsus 4.7 × as long as broad, about 1.2

× length of following 3 tarsomeres combined, hind inner tibial spur 0.4 × length of metabasitarsus. Pulvilli of hind

tarsus weakly developed, 1st pulvillus 0.7 × basal breadth and 0.4 × apical breadth of metabasitarsus, distance

between basal two pulvilli 4 × length of 2nd pulvillus. Ovipositor sheath 1.2 × length of middle tibia, venter margin

curved, exposed part of apical sheath slightly narrower than apex of hind tibia, about 1.6 × as long as broad; apical

sheath 1.5 × length of basal sheath. Lancet with 17 serrulae (Fig. 9b), middle serrulae each with 4 distal fine teeth

(Fig. 9o).

Male. Unknown.

Etymology: This species is named after the first name of the collector of the holotype.

Specimens examined. Chongqing: Holotype: 1♀, Dafengbao, Huangshui, Shizhu, Chongqing, 2006-V-3,

Zhang Weiwei leg.; CSCSHT 00810026 (CSCS).

Distribution. China (Chongqing).

Remarks. The new species is similar to S. acutitheca Niu & Wei, 2010, but differs from it in tegula and

pronotum entirely black; the pterostigma black brown; the base of fore and middle femora with black spot; the

dorsal side of the apex of lancet acute; serrulae weakly protruding, the 10th serrulae with 4 distal teeth; and the first

pulvillus of hind tarsus very small.

Siobla zuoae Wei, 2005

(Figs 3g, 3h, 5k, 5l, 8j–l, 8n, 9j, 9w, 10e, 10f)

Siobla zuoae Wei, 2005: 446. ♀, type locality: Dashahe, Zunyi, Guizhou (China).

Description. Holotype: ♀.

Length, 10.5 mm (Figs 3g, 5k). Black, palpi, posterior margin of pronotum (greatest width 1.8 × length of

lateral ocellus), most of tegula, entire 2nd and 3rd abdominal tergites, lateral edges of 4th tergite, middle of posterior

margin of 8th tergite, 9th tergite except lateral edges, 10th tergite, and cerci yellowish brown; apex of sheath pale

brown; legs yellowish brown, coxae except apical margin, fore and middle 1st trochanters, apical half of hind femur,

and inner spot on apical hind tibia black; body hairs silver; wings hyaline, pterostigma pale brown.

Head densely punctured, interspaces on clypeus, head behind eyes and postocellar area obvious, but narrower

than diameter of punctures, shiny; punctures on labrum fine and sparse; mesonotum include mesoscutellum

densely punctured, interspaces on middle of prescutum, of scutum, and of mesoscutellum broader than diameter of



punctures, shiny (Fig. 8n); posterior slope of mesoscutellum densely and coarsely punctured without interspaces;

posttergite shiny; mesoparapsides with large and sparse punctures and dense microsculpture; metascutellum with

anterior slope shiny and posterior slope densely punctured; metapostnotum and metaparapsides shiny with margins

slightly microsculptured; middle and upper of mesepisternum densely and coarsely punctured, venter with large

and shiny interspaces between small and sparse punctures; anterior corner of venter with a distinct polished patch;

anepimeron coarsely punctured, katepimeron microsculptured, posterior shiny; metepisternum with upper densely

punctured, mat, and venter sparsely punctured, shiny; basin of metepimeron shiny, margin of basin

microsculptured, dorsum of metepimeron with large punctures and posterior corner shiny. First abdominal tergite

shiny without microsculpture, lateral edges hardly punctured; 2nd tergite weakly microsculptured, other tergites

microsculptured, 4th to 8th tergites punctured.

Hairs on dorsum of head straight, slightly shorter than diameter of lateral ocellus. Clypeus flat, anterior margin

truncate; malar space as long as transverse diameter of median ocellus; shortest distance between eyes below

antennal sockets in front view 1.1 × as long as eye height; middle fovea broad and shallow; interocellar furrow

narrow and deep, postocellar furrow broad and shallow; postocellar area 1.6 × as broad as long, slightly lower than

top of ocelli, obviously elevated; lateral furrows deep, weakly curved, slightly divergent posteriorly; head behind

eyes 0.8 × length of eye in dorsal view; curved laterally and then convergent posteriorly; genal carina sharp,

complete (Fig. 8j). Antenna slightly longer than head and thorax together, obviously shorter than vein C, 2nd

antennomere 1.3 × as long as broad, relative length of 3rd to 4th antennomeres as 1.7, 5th to 8th antennomeres weakly

enlarged, hardly compressed, inner and outer sides of 6th to 8th antennomeres with weak furrows, 7th antennomere

about 2 × as long as broad. Middle furrow of prescutum deep; mesoscutellum slightly elevated, hardly higher than

scutum. Metabasitarsus 5.3 × as long as broad, about 1.2 × length of following 3 tarsomeres combined, hind inner

tibial spur 0.5 × length of metabasitarsus. Pulvilli of hind tarsus weakly developed, 1st pulvillus 0.6 × basal breadth

and 0.4 × apical breadth of metabasitarsus, distance between basal two pulvilli 2.5 × length of 2nd pulvillus.

Ovipositor sheath as long as middle tibia, venter margin curved, exposed part of apical sheath about 1.2 × as long

as broad; apical sheath 1.3 × length of basal sheath. Lancet with 15 serrulae (Fig. 9j), middle serrulae each with 10

distal fine teeth (Fig. 9w).

Male. Length, 10.5 mm (Figs 3h, 5l). Similar to female in structure and color, but pterostigma dark brown,

inner 0.5 to 0.7 of tegula black, most of 4th abdominal tergite, and 5th to 9th sternites black, posterior pale margin of

pronotum narrower than diameter of lateral ocelli, venter of hind 1st trochanter with black spot, apical 0.3 to 0.5 of

hind tibia black; malar space linear, 0.2 × transverse diameter of median ocellus (Fig. 8l); head in front view with

lower interocular distance 0.8 × eye height; head behind eyes 0.5 × eyes in length in dorsal view, curved in middle

and narrowing posteriorly (Fig. 8k); hairs on dorsum of head as long as lateral ocelli. Genitalia as in Figs 10e, 10f.

Variation. The hind femur in male is sometimes largely black; and the black macula on apex of hind tibia

varies in size.

Specimens examined. 20♀, 136♂. Guizhou: 1♀, “Dashahe, Zunyi, 1100–1300m, 2004-V-23, Lin Yang”;

[red] ”Holotype”; “CSCSHT 00810027” (CSCS); 10♀119♂, Dashahe, Zunyi, 1100–1300m, 2004-V-22–25, Lin

Yang leg.; [yellow] paratype; 1♀1♂, Dashahe, Zunyi, 1100–1300m, 2004-V-22–25, Lin Yang leg.; [yellow]

paratype (HNHM); 2♀2♂, Dashahe, Zunyi, 1100–1300m, 2004-V-22–25, Lin Yang leg.; [yellow] paratype

(BMNH); 2♀4♂, Linchang, Leigongshan, 2005-V-31, 1600m, Liang Minwen, Liao Fangjun leg.; Hunan: 3♀1♂,

Tianpingshan, Sangzhi, 1981-VI-31, Tong Xinwang; [yellow] paratype; 7♂, Huangsang, Suining, 2005-IV-21,

600–900m, Liu Weixing, Zhou Hu, Wei Meicai, Zhang Shaobing leg.;1♂, Hupingshan, Shimen, 2000-IV-30,

Zhong Yihai leg.; 1♂, Badagongshan, Sangzhi, 2000-V-1, Wei Meicai leg.; Sichuan: 1♀, Wawushan, Hongya,

E.102º56.457′, N.29º39.907′, 1920m, 2009-VII-5, Niu Gengyun leg.; Chongqing: 1♀, CSCS12081,

Beiposhanding, Mt. Jinfo, . E.107º11′09′′, N. 29º01′55′′, 2100m, 2012-VII-1, Jiang Jigang leg.; 1♀, CSCS12085,

Yuanshisenlin, Nanpo, Mt. Jinfo, . E.107º11′11′′, N. 29º00′21′′, 2010m, 2012-VII-2, Wei Meicai, Niu Gengyun leg..

Distribution. China (Guizhou, Sichuan, Hunan, Chongqing).

Remarks. The species is similar to S. jiangi Niu & Wei, 2011 but differs from it in the forewings hyaline;

tegula largely and fore and middle femora entirely yellow brown; the abdominal tergite 4 and metepimeron black;

the interspaces between punctures on the center of prescutum, scutum and of mesoscutellum distinctly broader than

diameter of a puncture, shiny; the ovipositor sheath short, as long as middle tibia; lancet is slender, with 15

serrulae, the middle serrulae each with 10 distal teeth; the valviceps of penis valve quite narrow.



FIGURE 1. Siobla species, dorsal view. a. S. acutitheca, holotype, ♀; b. S. acutitheca, non-type, ♂; c. S. carinoclypea, holotype, ♀; d. S. carinoclypea, paratype, ♂; e. S. formosana, holotype, ♀; f. S. formosana, non-type, ♂; g. S. fumipennis, non-type, ♀; h. S. fumipennis, non-type, ♂. Scale bar = 1 mm.



FIGURE 2. Siobla species, dorsal view. a. S. jiangi, sp. nov., holotype, ♀; b. S. jiangi, sp. nov., paratype, ♂; c. S. listoni, paratype, ♀; d. S. listoni, paratype, ♀; e. S. parallela, sp. nov., holotype, ♀; f. S. parallela, sp. nov., paratype, ♂; g. S.

pseudoplesia, paratype; h. S. pseudoplesia, paratype, ♂. Scale bar = 1 mm.



FIGURE 3. Siobla species, dorsal view. a. S. atra, Lectotype, ♀; b. S. atra, Paralectotype, ♂; c. S. rufopropodea, non-type, ♀; d. S. rufopropodea, non-type, ♂; e. S. semipicta, Lecotype, ♀; f. S. semipicta, non-type, ♂; g. S. zuoae, paratype, ♀; h. S. zuoae, paratype, ♂. Scale bar = 1 mm.



FIGURE 4. Siobla species, lateral view. a. S. acutitheca, holotype, ♀; b. S. acutitheca, non-type, ♂; c. S. carinoclypea, holotype, ♀; d. S. carinoclypea, paratype, ♂; e. S. formosana, holotype, ♀; f. S. formosana, non-type, ♂; g. S. fumipennis, non-type, ♀; h. S. fumipennis, non-type, ♂; i. S. jiangi, sp. nov., holotype, ♀; j. S. jiangi, sp. nov., paratype, ♂; k. S. listoni, paratype, ♀; l. S. listoni, paratype, ♀. Scale bar = 1 mm.



FIGURE 5. Siobla species, lateral view. a. S. parallela, sp. nov., holotype, ♀; b. S. parallela, sp. nov., paratype, ♂; c. S.

pseudoplesia, paratype; d. S. pseudoplesia, paratype, ♂; e. S. atra, Lectotype, ♀; f. S. atra, Paralectotype, ♂; g. S.

rufopropodea, non-type, ♀; h. S. rufopropodea, non-type, ♂; i. S. semipicta, Lecotype, ♀; j. S. semipicta, non-type, ♂; k. S.

zuoae, paratype, ♀; l. S. zuoae, paratype, ♂. Scale bar = 1 mm.



FIGURE 6. Siobla species, a–d. S. weiweii, sp. nov., holotype, ♀; a. Adult, dorsal view; b. Adult, lateral view; c. Head, dorsal view; d. Mesoscutellum, lateral view; e–i. S. acutitheca, e. Abdominal tergites; f. Head, ♀, dorsal view; g. Head, ♂, dorsal view; h. Mesoscutum and mesoscutellum, ♀; i. Sheath, lateral view; j–n. S. pseudoplesia, j. Abdominal tergites; k. Head, ♀, dorsal view; l. Head, ♂, dorsal view; m. Mesoscutum and mesoscutellum, ♀; n. Sheath, lateral view. Scale bar = 1 mm.



FIGURE 7. Siobla species, a–c. S. carinoclypea, a. Head, ♀, dorsal view; b. Head, ♂, dorsal view; c. Head, ♂, lateral view; d–f. S. parallela, sp. nov., d. Head, ♀, dorsal view; e. Head, ♂, dorsal view; f. Head, ♂, lateral view; g–i. S. listoni, g. Head, ♀, dorsal view; h. Head, ♂, dorsal view; i. Head, ♂, lateral view; j. S. atra, head, ♀, dorsal view; k. S. atra, head, ♀, lateral view; l. S. semipicta, first abdominal tergite, ♀; m. S. semipicta, head, ♂, lateral view; n. S. atra, clypeus, ♀; o. S. carinoclypea, head, ♀, lateral view; p. S. atra, first abdominal tergite, ♀; q. S. atra, ♂, head, lateral view; r. S. carinoclypea, clypeus, ♀. Scale bar = 1 mm.



FIGURE 8. Siobla species, a–c. S. formosana, a. Head, ♀, dorsal view; b. Head, ♂, dorsal view; c. Head, ♂, lateral view; d–f. S. fumipennis, d. Head, ♀, dorsal view; e. Head, ♂, dorsal view; f. Head, ♂, lateral view; g–i. S. jiangi, sp. nov., g. Head, ♀, dorsal view; h. Head, ♂, dorsal view; i. Head, ♂, lateral view; j–l. S. zuoae, j. Head, ♀, dorsal view; k. Head, ♂, dorsal view; l. Head, ♂, lateral view; m–n. Mesoscutum and mesoscutellum, m. S. jiangi, sp. nov.; n. S. zuoae. Scale bar = 1 mm.



FIGURE 9. Siobla species, lancet. a. S. acutitheca; b. S. weiweii, sp. nov., c. S. atra, d. S. rufopropodea, e. S. carinoclypea, f. S. listoni, g. S. parallela, sp. nov., h. S. pseudoplesia, i. S. semipicta, j. S. zuoae, k. S. formosana, l. S. fumipennis, m. S. jiangi, sp. nov.. Middle serrulae. n. S. acutitheca; o. S. weiweii, sp. nov., p. S. atra, q. S. rufopropodea, r. S. carinoclypea, s. S. listoni, t. S. parallela, sp. nov., u. S. pseudoplesia, v. S. semipicta, w. S. zuoae, x. S. formosana, y. S. fumipennis, z. S. jiangi, sp. nov.. Scale bar = 100 μm.



FIGURE 10 Siobla species, penis valve and gonoforcep. a–b. S. acutitheca; c–d. S. listoni, e–f. S. zuoae, g–h. S. formosana, i–j. S. fumipennis, k–l. S. jiangi, sp. nov., m–n. S. rufopropodea, o–p. S. carinoclypea, q–r. S. parallela, sp. nov., s–t. S.

semipicta, u–v. S. atra, w–x. S. pseudoplesia. Scale bar = 100 μm.



FIGURE 11. Siobla species, distribution.

Acknowledgements

Our cordial thanks are due to Dr. Andreas Taeger of SDEI for his great help on Siobla, especially the study of

Malaise’s types. Our thanks also go to Dr. Akihiko Shinohara for providing material from the National Museum of

Nature and Science, Japan. We are also grateful to the anonymous reviewers. The research was supported by the



National Natural Science Foundation of China (No. 31172142), Graduate’s Scientific Research Foundation of

Central South University of Forestry and Technology (2009bx02), and Hunan Provincial Innovation Foundation

For Postgraduate (CX2011B314).

References

Ashmead, W.H. (1898) Classification of the horntails and sawflies, or the sub-order Phytophaga (Paper No. 7. –Conclusion). The Canadian Entomologist, 30, 309–310. http://dx.doi.org/10.4039/ent30141-6

Cameron, P. (1877) Descriptions of new genera and species of East Indian Tenthredinidae. (The) Transactions of the

Entomological Society of London, 2, 88–90. http://dx.doi.org/10.1111/j.1365-2311.1877.tb02903.x

Dovnar-Zapolskii, D.P. (1930) Neue oder wenig bekannte Chalastogastren. Russkoje entomologitscheskoje obozrenije, 24, 86–87.

Klug, F. (1817) Die Blattwespen nach ihren Gattungen und Arten zusammengestellt. Der Gesellschaft Naturforschender

Freunde zu Berlin Magazin für die neuesten Entdeckungen in der gesamten Naturkunde. [1814], 8 (2), 116.ICZN (1999) International Code of Zoological Nomenclature. Fourth Edition. The International Trust for the Zoological

Nomenclature, London, 306 pp.ICZN (International Commission on Zoological Nomenclature). (2008) Proposed amendment of the International Code of

Zoological Nomenclature to expand and refine methods of publication. Zootaxa, 1908, 57–67.Konow, F.W. (1890) Tenthredinidae Europae. Deutsche Entomologische Zeitschrift, 1890 (2), 225–240.Malaise, R. (1945) Tenthredinoidea of South-Eastern Asia with a general zoogeographical review. Opuscula Entomologica,

Suppl. 4, pp. 1–288.Niu, G. & Wei, M. (2010a) Revision of the Siobla annulicornis, acutiscutella and sheni groups (Hymenoptera: Tenthredinidae).

Zootaxa, 2643, 45–65.Niu, G. & Wei, M. (2010b) Five New Species of Siobla Cameron from China (Hymenoptera, Tenthredinidae). Acta

Zootaxonomica Sinca, 35 (4), 911–921. [in Chinese, abstract in English]Niu, G. & Wei, M (2011) Revision of Siobla (Hymenoptera: Tenthredinidae) from Taiwan with descriptions of three new

species and three new synonyms. the Japanese Journal of Systematic Entomology, 17 (2), 155–176.Niu, G., Wei, M. & Taeger, A. (2012) Revision of the Siobla metallica group (Hymenoptera: Tenthredinidae). Zootaxa, 3196,

1–49.Niu, G., Xiao, W. & Wei, M. (2012) Seven new species and a key to species of Siobla (Hymenoptera: Tenthredinidae) from

Shaanxi, China. Entomotaxonomia, 34 (2), 399–422.Polaszek, A., Agosti, D., Alonso-Zarazaga, M., Beccaloni, G., de Place Bjørn, P., Bouchet, P., Brothers, D.J., Earl of

Cranbrook, Evenhuis, N.L., Godfray, H.C.J., Johnson, N.F., Krell, F.T., Lipscomb, D., Lyal, C.H.C., Mace, G.M., Mawatari, S.F., Miller, S.E., Minelli, A., Morris, S., Ng, P.K.L., Patterson, D.J., Pyle, R.L., Robinson, N., Rogo, L., Taverne, J., Thompson, F.C., van Tol, J., Wheeler, Q.D. & Wilson, E.O. (2005a) Commentary: A universal register for animal names. Nature, 437, 477.

Polaszek, A., Alonso-Zarazaga, M., Bouchet, P., Brothers, D.J., Evenhuis, N.L., Krell, F.T., Lyal, C.H.C., Minelli, A., Pyle, R.L., Robinson, N., Thompson, F.C. & van Tol, J. (2005b) ZooBank: the open-access register for zoological taxonomy: technical discussion paper. Bulletin of Zoological Nomenclature, 62, 210–220.

Ross, H.H. (1945) Sawfly genitalia: terminology and study techniques. Entomological News, 56, 261–268.Shinohara, A., Wei, M. & Niu, G. (2013) Revision of Siobla (Hymenoptera, Tenthredinidae) from Japan. Zootaxa. 3746 (1), 1–

40. http://dx.doi.org/10.11646/zootaxa.3746.1.1

Taeger, A. & Blank, S.M. (2008) ECatSym — Electronic World Catalog of Symphyta (Insecta, Hymenoptera). Program version 3.9, data version 34 (05.09.2008). Available from: http://www.zalf.de/home_zalf/institute/dei/php_e/ecatsym/index.html (accessed 30 July 2010)

Taeger, A., Blank, S.M. & Liston, A.D. (2010) World Catalog of Symphyta (Hymenoptera). Zootaxa, 2580, 1–1064.Takeuchi, K. (1927) Some New Sawflies From Formosa. Transactions of the Natural History Society of Formosa, 27 (90),

207–209.Wei, M.C. & Lin, Y. (2005) Hymenoptera: Argidae, Cimbicidae and Tenthredinidae. In: Yang, M.F. & Jin, D.C. (Eds.), Insects

from Dashahe Nature Reserve of Guizhou. Guizhou Peoples Publishing House, Guiyang, pp. 446–448. [in Chinese, abstract in English]

Wei, M.C. & Nie, H.Y. (1998b) Four new species of Siobla and Metallopeus from Mt. Funiu (Hymenoptera: Tenthredinidae). The Fauna and Taxonomy of Insects in Henan Province, 2, 142–145. [in Chinese, abstract in English]

Wei, M.C., Nie, H.Y. & Taeger, A. (2006) Sawflies (Hymenoptera: Symphyta) of China—Checklist and Review of Research. In: Blank, S.M., Schmidt, S. & Taeger, A. (Eds.), Recent Sawfly Research: Synthesis and Prospects. Goecke & Evers, Keltern, pp. 505–574.


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