F. Ü. Fen ve Mühendislik Bilimleri Dergisi, 17 (2), 449-454, 2005

Some Notes on Two Newly Recorded Aquatic Coleoptera (Hydrophilidae, Helophoridae) Species from Turkey

Umit INCEKARA*, Abdullah MART* and Orhan ERMAN**

* Atatürk University, Science and Arts Faculty, Department of Biology, 25240 Erzurum, TURKEY ** Fırat University, Science and Arts Faculty, Department of Biology, 23119 Elazığ, TURKEY

Abstract

Two newly recorded Aquatic Coleoptera species for the Turkish fauna, Helophorus (Helophorus) kozlovi Zaitzev, 1908 (Helophoridae) and Hydrobius fuscipes (Linneaus, 1758) (Hydrophilidae) are described, their distribution in Turkey and worldwide are presented.

Keywords: Coleoptera, Hydrophilidae, Helophoridae, Helophorus, Hydrobius, New Records, Turkey.

Türkiyeden İlk Defa Kaydedilen İki Sucul Coleoptera (Hydrophilidae,

Helophoridae) Türü Üzerine Bazı Notlar

Özet

Türkiye faunası için yeni kayıt olan, Hydrobius fuscipes (Linneaus, 1758) (Hydrophilidae) ve Helophorus (Helophorus) kozlovi Zaitzev, 1908 (Helophoridae)’nin tanımları örneklerimiz üzerinden gözden geçirilmiş, Türkiye ve dünyadaki dağılımları verilmiştir.

Anahtar Sözcükler: Coleoptera, Hydrophilidae, Helophoridae, Helophorus, Hydrobius, Yeni Kayıtlar, Türkiye.

1. Introduction

The Hydrophilidae is a large family, represented in all parts of the world and consisting of numerous genera and about 1450 known species. Of the 4 subfamilies only 2 (Hydrophilinae, Sphaeridiinae) are recorded from the Palearctic and Oriental regions. Hydrophilinae, comprising more than 1600 described species, are mostly aquatic. Sphaeridiinae, comprising more than 800 species, are mostly terrestrial; aquatic representatives are found only in the tribe Coleostomatini and in the genus Cercyon Leach [1, 2, 3].

A total of 34 genera of aquatic Hydrophilidae is known from the Palearctic and Oriental regions. So far, 13 genera and 58 species of Hydrophilidae have been recorded from Turkey [4, 5, 6]. Although Hydrobius fuscipes (Linneaus, 1758) species are frequently collected and presented in larger beetle collections, there is no record from Turkey so far.

The Helophoridae is a large family comprising only a single subfamily of a single genus, Helophorus. This genus comprises about 190 species, represented in three major

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zoogeographical regions (Palearctic, Nearctic and Ethiopian) [7-17]. Fourty seven species have been recorded belonging to the six subgenera in Turkey, previously [3, 10, 13, 18-21].

The aim of this study is to make a contribution to the Turkish Aquatic Coleoptera Fauna, this paper adds two new records.

2. Materials and Methods

Specimens of aquatic Coleoptera were collected in various parts of Turkey in different surveys since 2000. The beetles were killed by Ethyl acetate or within 70% alcohol solution. Aedeagophores of the beetles that cleaned with brush were dissected under a stereo microscope and left to be exposed in 10% KOH solution for 1-2 hours. The figure of the aedeagophore was drawn using a Nikon type 104 microscope. Materials were deposited in the Zoology Museum of Ataturk University, Science and Arts Faculty, Department of Biology, Erzurum, Turkey.

3. Results

Helophorus (Helophorus) kozlovi Zaitzev, 1908

Body 5.0-6.0 mm in length. Head with metallic bronze reflections and its surface cowered with large granules. “Y” groove distinct, its stem rather expanded. Maxillary palpi short and brown, inner face of terminal segment of maxillary palpi slightly straightened. Antennae dark brown, 9-segmented and club loose. Pronotum widest at anterior 1/3 base, coloration of surface as head. Humeral angles of pronotum distinctly curved towards to abdomen. Lateral margins serrate, straightened posteriorly. Pronotal grooves distinct, its floors knobby and sometimes covered with sparse granules.

Scutellum oval and with metallic bronze reflections. Elitra blackish, stria distinct, narrowed posteriorly. Legs reddish brown, tarsi with long and dense swimming hairs, claw segment rather long and darker towards to apex.

Aedeagophore 0.8 mm in length. Basal piece longer than parameres. Outer margins of parameres slightly bending towards to inner margin medially. Median lobe short and robust. Struts obtusely angled (Figure A).

Material examined: Erzincan, Devekorusu (exit), Grassy pond, 1800 m a.s.l., 02.VII.2003, 1 ♂, 2 ♀♀; Erzincan, Çayırlı, Keşiş mountain (top), slowly running water without vegetation, 2800 m a.s.l., 02.VII.2003, 3 ♂♂, 2 ♀♀.

Distribution: China, Uzbekistan [2, 23].

Hydrobius fuscipes (Linneaus, 1758)

Body in 6.0-6.5 mm in length. Head black with green reflections, its surface fine and densely punctuate. Maxillary palpi yellowish brown, apex of terminal segments darker. Antennae 9-segmented, darker (except extreme top). Pronotum distinctly narrowed anteriorly,

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lateral margins pale, some times two untidy row of punctures may be occur at near both sides of pronotum (laterally). Elytral striae fine but rather sharply impressed, anteriorly very feeble. Punctuation of elytral intersitices a little finer than on pronotum, becoming gradually finer posteriorly, very fine subapically. Ventral surface dark brown, mesosternum with a strong acute dentiform process postero-medially. Abdomen with 5- segmented, posterior margin of last segment with an emargination. Legs reddish, tarsi 5-segmented and basal segment shorter than half of the second.

Aedeagophore 1.0-1.4 mm in length, very similar to Hydrochara dichroma (Fairmaire, 1892)’s aedeagophore externally but, easily distinguishable from it by shortness and with longer basal piece. Outer margins of parameres almost straight. Median lobe shorter than parameres. Struts short and obtusely angled (Figure B).

Material examined: Artvin: Cankurtaran pass, 19 ♂♂, 26 ♀♀, 15.IX.2000; Borçka: Karagöl road 20. km, 17 ♂♂, 26 ♀♀, 15.IX.2000; Hopa: Artvin road II. bridge, 1 ♂, 4 ♀♀, 14.IX.2000, Artvin road, 10. km, 5 ♂♂, 14.IX.2000, Sarp, 18 ♂♂, 27 ♀♀, 21.IX.2000; Şavşat: Yukarı Koyunlu, 29 ♂♂, 18 ♀♀, 17.IX.2000, 4 ♀♀, 21.VI.2000, 2 ♀♀, 24.VI.2000, Karagöl, 2 ♂♂, 2 ♀♀, 16.IX.2000, 1 km before Meşeli-Karagöl road, 56 ♂♂, 65 ♀♀, 15.IX.2000, Şavşat-Ardahan road 2. km, 1 ♂, 2 ♀♀, 21.VII.2000, 10. km, 21.VI.2000. Erzincan: Kelkit road, 10. km, 26.V.2003, 12 ♂♂, 8 ♀♀; Gemecik village, 05.VII.2003, 1 ♂, 2 ♀♀. Çayırlı: Başköy, 02.VII.2003, 9 ♂♂, 7 ♀♀; Gözeler-Çayırlı road 5. km, 25.V.2003, 2 ♂♂, 2 ♀♀; City center, 27.VIII.2003, 1 ♂; Harmantepe, 27.VIII.2003, 1 ♂, 7 ♀♀, 25.V.2003, 1 ♀; Karadayı, 03.VII.2003, 1 ♀; Yaylakent, 02.VII.2003, 4 ♂♂, 1 ♀. Kemah: Doğanbeyli, 14.X.2003, 3 ♂♂, 1 ♀. Refahiye: Akçiğdem, 27.V.2003, 2 ♂♂, 6 ♀♀; Çatalçam road, 7. km, 27.V.2003, 1 ♀; Çamdibi, 28.V.2003, 6 ♂♂, 2 ♀♀. Otlukbeli: Otlukbeli (enterance), 26.V.2003, 2 ♂♂, 3 ♀♀; Yeniköy fountain, 02.VII.2003, 4 ♂♂, 1 ♀. Tercan: Dallıca, 27.VIII.2003, 1 ♂, 1 ♀. Erzurum: İspir road 50. km, 46 ♂♂, 22 ♀♀, 65. km, 16 ♂♂, 5 ♀♀, 12.IX.2000, 55. km, 8 ♂♂, 6 ♀♀, 12.IX.2000, Kovanlı, mineralized water, 6 ♂♂, 4 ♀♀, 11.VI.2000, Serçeme stream, 5 ♂♂, 12, IX.2000, Erzurum-Çat road, 30-35. km, 1 ♂, 3 ♀♀, 26.IX.2000, pass stream, 20 ♂♂, 44 ♀♀, 5.IX.2000; Çat: Tuzluca plateau, 2 ♂♂, 3 ♀♀, 13.X.2000; İspir: İspir Mountain, 4 ♂♂, 2 ♀♀, Ovid Mountain (top), 1 ♂, 12.IX.2000; İkizdere road, 10. km, 1 ♂, 20.VI.2000, Çayırözü stream, 3 ♂♂, 3 ♀♀, 19.VI.2000; Oltu: Ölderme, 2 ♂♂, 1 ♀, 18.IX.2000; Pazaryolu: Erzurum road, 30 km, 4 ♂♂, 13 ♀♀, 13.X.2000, 50. km, 2 ♂♂, 4 ♀♀, 19.VI.2000; İspir road, 58. Km., 11 ♀♀, 19.VI.2000; Şenkaya: Aydoğdu, 6 ♂♂, 4 ♀♀, Değirmenlidere, 1 ♂, 2 ♀♀, Taht stream, 6 ♂♂, 6 ♀♀, 18.IX.2000; Tekman: Hasanağa, 3 ♂♂, 5 ♀♀, 7.IX.2000, Çevirmen, 3 ♂♂, 5 ♀♀, 7.IX.2000, 1 ♂, 7.X.2000, Çukurçeşme, 2 ♂♂, 7.9. 2000; Tortum: Dikmen plateau, pine stream, 6 ♂♂, 4 ♀♀, 19.IX.2000, Hamidiye stream, 20 ♂♂, 27 ♀♀, 24.IX.2000, Uzunkavak, 2 ♂♂, Serdarlı, 15 ♂♂, 10 ♀♀, 7.IX.2000, Taşoluk, 12 ♂♂, 11 ♀♀, 22.IX.2000. Rize: Ayder (exit), 22 ♂♂, 22 ♀♀, 14.IX.2000, Ayder (enterance), 12 ♂♂, 14 ♀♀, 22.VI.2000.

Distribution: Austria, Canada, Germany, Belgium, Bosnia-Herzegovina, Britain, Bulgaria, Caucasus, China, Croatia, Cyprus, Czechoslovakia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Israel, Italy, Japan, Kazakhstan, Latvia, Lithuania, Mongolia, Netherlands, Norway, Poland, Portugal, Romania, Russia, Slovenia, Spain, Sweden Switzerland, Syria, United States and Yugoslavia [3, 15, 24].

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Figure1. Aedeagophore, dorsal. A) Helophorus (Helophorus) kozlovi Zaitzev, 1908. B) Hydrobius

fuscipes (Linneaus, 1758).

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4. Discussion

Helophorus (Helophorus) kozlovi was introduced to science by Zaitzev [22] and only known from type locality (China, Animaqing) and Uzbekistan (1 male) [8, 23]. Literatures about this species are very limited [3, 8, 22, 23]. In addition, it was very rare in the research area (East Anatolian Region). Since 1998, only 8 samples could be collected. Therefore it is not possible to provide any information about they habitat prefer of H. (H.) kozlovi. Contary to Angus [23], our samples larger (5.0-6.0 mm) but with smaller aedeagophore that has more robust median lobe. Other morphological characters are in accordance with the results obtained from previous studies.

Hydrobius fuscipes (Linneaus, 1758) was very abundant in the research area (East Anatolian region). Generally, the Helophorids live in shallow or very shallow water. Our specimens were collected from almost all kind of aquatic habitat but usually found among vegetation on shallow places near the edge. We have found no morphological difference from literatures except body length.

Moving from the temperate zones towards the warmer climates many genera show a pronounced increase in the number of species and the Hydrophilids and Heloporids no doubt form a group where large number of species are yet to be recorded.

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