308 ENTOMOLOGIA SINICA Volume 2 , Number 4 , 1995, pp. 308-310

A NEW SPECIES OF APROSTOCETUS FROM CHINA ( HYMENOPTERA : EULOPHIDAE : TETRASTICHINAE)

Abstract This paper deals with a new species of ilprostoc-rtirs collected from the campus of Jiangxi Agri- cultural University. This species is an inquiline living in the galls of a gall-midge on I frJ c'ornutu 1.. Speci- mens are preserved in the Departmcnt of Plant Protection, Jiangxi Agricultural University.

Kej words Tetrnstichinae , A~rostoc.rfu.s, new species

Aprostocetus (Aprostocetus) ilexi sp. nov.

Female: body length I . 6 - 2. 2 mm, black, with violet and bluish tinge. Antenna dark brown. with scape and pedicellus yellowish to testaceous. Coxa black only the tips pale, legs otherwise yellow or testaceous. with femora fuscous except the distal half.

Head usually collapsed but slightly broader than mesoscutum if undistorted. Frons with median longitudinal line (Fig. 1 ) . POI, about 1. 2 OOL, 001, about 1. 8 OD (Fig. 2 ) . Eyes 1. 5 times as long as broad. Malar space 0. 7 times length of eye. Mouth about 1. 4 times malar space. Antenna (Fig. 3 ) with scape 0. 86 length of eye, about reaching the lower margin of median ocellus; pedicellus plus flagellum slightly greater than breadth of mesoscutum; pedicellus 2. 2-2. 3 times as long as broad, as long as F, ; funicle distinctly stouter than pedicellus, its segments subequal or decreasing very slightly in length. F, about 2 times, F,1. 7 times, F, I . 5 times as long as broad; clava slightly broader than F,, about the length of F, plus F3, nearly 3 times as long as broad, acute. with C, and c', slightly longer than broad + C, shorter. spine about 0. 4 length of C,. with apical seta slightly short- er than spine. Thorax about 1. 5 times as long as broad; propodeal 45". Pronotum rather short. Mid lobe of mesoscutum slightly broader than the length, moderately convex, mod- erately shiny, with areoles of reticulation 2-3 times as long as broad; median line present, indicated throughout , S adnotaular setae on each side. Scutellum about 1. 7 times as broad as the length. moderately convex, submedian lines slightly nearer to sublateral lines than to each other. tending to diverge slightly caudad, enclosing a space 2. 3 times as length as broad. setae subequal, anterior pair slightly behind the middle. Dorsellum about 4 times as broad as length. Propodeuni deeply incised in the middle of the posterior margin, medially slightly shorter than dorsellum. with fine. very slightly raised reticulation ; median carina distinct, propodeal spiracles moderate-sized. close to metanotum, the outer part of their rim tending to be more or less covered by a raised flap of the callus, at least when viewed from one side (Fig. 51, callus with 2-3 setae. Legs somewhat slender. hind coxa with very fine reticulation, spurs of mid tibia nearly as long as length of basitarsus, the following 2 seg-

Jinkun Sheng and Fengxia Zhao: A new species of Aprostcxetus from China 309

ments slightly shorter, the fourth segment as long as or slightly longer than basitarsus (Fig. 6 ) . Forewing about 2 times or slightly more than twice as long as broad, costal cell shorter than M , its lower surface in the distal part with a single row of setae. SM with 5 dorsal se- tae. M about 3. 5 length of ST, ,ST very thin expanding proximally and gradually, MP rudimentary. Speculum rather small and colsed below (Fig. 4). Hindwing obtuse. Gaster (Fig. 7) long oval, about 1 .4 times as long as the length of head plus thorax combined, pointed , with very fine and transverse reticulation. Ovipositor distinctly protruding about as long as the last tergite, the longest seta of each cercus nearly 1.5 length of next longest , curved.

Figs. 1-9 Aprostocetus (A. ) ilexi sp. nov. 1. head in facial view; 2. head in postero-dorsal view; 3. antennae! 4. forewing; 5. thorax1 6. mid tibia and tarsus; 7. abdomen in dorsal view; 8. antennae ( ; 9. abdomen in dorsal

view ( cf 1. Male: Body length 1.1-1.2 mm. Black .brown, with bluish green tinge. Gaster black,

with a subbasal yellow brown spot. Antenna (Fig. 8) with scape as long as the length of F1 plus Fz combined F1 nearly rounded following 3 segments nearly subequal in length and width; clave not broader than F4, about the length of F3 plus F4, all funicles with long whorled setae, scape with ventral plaque about 0.3 length of scape. Gaster (Fig. 9) about

310 ENTOMOLOGIA SINICA Volume 2, Number 4, 1995

as long as thorax, narrower and obtuse. Holotype p , Allotypeg , Paratypes, many p cf , Mailin, Nanchang, Jiangxi

Province. Apr. 17 , i994, Fengxia Zhao. Biology: Reared from galls of gallmidge on Ilex cornuta L. This species belongs to the

lycidus group of subgenus Aprostocetus and is very close to Aprostocetus (A. ) boreus (Deluc- chi) but the gaster about 1. 4 times as long as length of head plus thorax combined. Propodeum medially slightly shorter than dorsellum. Mesoscutum with 5 adnotaular setae.

Acknowledgements We wish to express our cordial gratitude to Dr. M. W. R. de V. Graham for his kindness to edit our manuscript and we wish also to express our heartfelt thanks to the Associate Professor Renlie Li who has given our much aid in the course of the study.

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