This paper reports on the first known larva of Atrichops crassipes (Meigen, 1820) from Hungary. The single

specimen was caught with flushing of stones during a year-long monthly sampling in the Morgó Stream, Börzsöny Mts.

Characterisation of the sampling site, list of the accompanying fauna and a figure on the habitus of the specimen are given

Murányi, Dávid

Schöll, Károly Norbert

Tarjányi, Nikolett

Opuscula Zoologica

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 Opusc. Zool. Budapest, 2009, 40 (2): 103–105     1Dr. Dávid Murányi, Magyar Természettudományi Múzeum Állattára (Department of Zoology, Hungarian Natural History Museum), H-1088 Budapest, Baross utca 13, Hungary. E-mail: muranyi@zool.nhmus.hu 2Nikolett Tarjányi, Eötvös Loránd Tudományegyetem (Eötvös Loránd University), H-1117 Budapest, Pázmány Péter sétány 1/C, Hungary. E-mail: nikolett.tarjanyi@gmail.com 3Dr. Károly Schöll, MTA ÖBKI Magyar Dunakutató Állomás (Hungarian Danube Research Station of the Hungarian Academy of Sciences), H-2163 Vácrátót, Alkotmány utca 2–4, Hungary. E-mail: scholl.karoly@gmail.com First record of the genus Atrichops Verrall, 1909 in Hungary (Diptera: Athericidae)    D. MURÁNYI1, N. TARJÁNYI2 and K. SCHÖLL3   Abstract. This paper reports on the first known larva of Atrichops crassipes (Meigen, 1820) from Hungary. The single specimen was caught with flushing of stones during a year-long monthly sampling in the Morgó Stream, Börzsöny Mts. Characterisation of the sampling site, list of the accompanying fauna and a figure on the habitus of the specimen are given.    mong the small family Athericidae, there are only two species included in the Checklist of the Diptera of Hungary (Papp, 2001). The mo-notypic genus Atrichops Verrall, 1909 was men-tioned as expected but not yet reported (Májer, 2001).  Atrichops crassipes (Meigen, 1820) is known from the United Kingdom, Belgium, The Ne-therlands, Spain, France, Germany, Italy,  Czech Republic, Poland, Slovakia and Romania (Tho-mas, 2004), and having a merolimnic, biennial life cycle (Gerke & Böttger, 2001). During a year-long monthly benthic sampling in the Morgó Stream, North Hungary, a single larva of Atrichops was caught with flushing of stones. This specimen represents the first Hunga-rian record of the genus.  MATERIAL AND METHODS  Benthic samples were taken monthly at five localities along the Morgó Stream (called Apátku-ti Stream on its upper section), between 06. 03. 2008 and 03. 02. 2009. Two samples were taken at each locality: one with flushing of stones, and one with kick-and-sweep method. The material has been preserved in 70% ethanol. The Atrichops specimen is deposited in the Diptera Collection, Department of Zoology, Hungarian Natural Histo-ry Museum, Budapest (HNHM). The accompanying benthic taxa were identi-fied to specific level by various specialists: Mol-lusca: Dávid Murányi; Crustacea: Gammaridae: Júlia Papp (Eötvös Loránd University); Epheme-roptera: Nóra Hordós (ELU), Dávid Murányi; Odonata: Dávid Murányi; Plecoptera: Dávid Mu-rányi; Coleoptera: Zoltán Kálmán, Zoltán Csabai (University of Pécs); Neuroptera: Dávid Murányi; Diptera: Simuliidae: Csaba Deák (Trans-Tisza Region Inspectorate for Environment, Nature and Water). Additional taxa were identified only at generic or family level (e.g. Oligochaeta: Tubifi-cidae; Diptera: Ceratopogonidae), or the identi-fications are still in progress (e.g. Trichoptera, Diptera: Chironomidae).  RESULTS AND DISCUSSION  Material examined. Atrichops crassipes (Mei-gen, 1820): Hungary, Pest county, Börzsöny Mts, Kismaros, Morgó Stream above the bridge of the forest railway terminal, N 47°49.751’ E 19° 00.777’, 200 m a.s.l., flushing of stones, 28. 10. 2008, one larva, leg. K. Schöll, and N. Tarjányi. The specimen is a third instar larva, on the basis of the size of head capsule (Gerke & Böttger A  Murányi, Tarjányi & Schöll: First record of the genus Atrichops in Hungary   104  Figure 1. Habitus of the larva of Atrichops crassipes (Meigen, 1820) from Morgó Stream, Hungary (scale 1 mm)   2001). Its habitus (Fig. 1) possesses all the dis-tinctive morphological characteristics of the spe-cies discussed by Thomas (1974), Rozkošný (1980) and Rozkošný and Nagatomi (1997). The sampling site, where the larva was caught, is the lowest among the five sites along the Morgó Stream, 1 km above the mouth to the Danube River. The width of the stream is about 3 m, the water is 0.2–0.5 m deep and runs fast; the sub-strate consists of sand with sparse, 5–15 cm large stones, macrophyton is lacking, and the bank is moderately steep. The stream flows among alders, and thus the water is rather shaded. The sampling site agrees with locality 7 of Csuták (1973). The accompanying benthic macroinvertebrata fauna consists of the following taxa: Mollusca: Ancylus fluviatilis Müller, 1774, Pisidium sp.; Crustacea: Amphipoda: Gammarus balcanicus Schä-ferna, 1922, Gammarus fossarum Koch, 1853, Gam-marus roeseli Gervais, 1835; Ephemeroptera: Baetis rhodani (Pictet, 1843), Baetis sp., Caenis luctuosa (Burmeister, 1839), C. robusta Eaton, 1884, Ecdyonorus spp., Ephemera danica (Mül-ler, 1764), Ephemerella ignita (Poda, 1761), Hab-roleptoides sp., Habrophlebia sp., Rhitrogena spp.; Odonata: Calopteryx virgo (Linnaeus, 1758), Onychogomphus  forcipatus  (Linnaeus,  1758);  Pleco- ptera: Capnia bifrons (Newman, 1839), Isoperla sp., Leuctra sp., Nemoura sp.; Coleoptera: El-midae: Elmis maugetii (Latreille, 1802), Limnius volckmari (Panzer, 1793); Trichoptera (indet.); Diptera: Limoniidae (indet.); Diptera: Cerato-pogonidae: Atrichopogon sp.; Diptera: Chirono-midae (indet.); Diptera: Simuliidae: Prosimulium tomosvaryi (Enderlein, 1921), Prosimulium sp., Simulium (Simulium) argyreatum (Meigen, 1838), Simulium (Simulium) argyreatum/variegatum, Si-mulium (Simulium) ornatum (Meigen, 1818); Diptera: Athericidae: Ibisia marginata (Fabricius, 1781). The species should be regarded very rare in the Morgó Stream, as only a single larva turned up among the thousands of benthic invertebrates collected. Moreover, it was not found during previous benthic samplings (Csuták, 1973; Lien, 1984), nor extensive recent collecting efforts of Diptera imagos in the watershed of the Morgó Stream (Papp, 2004, 2006, 2007). It is worth to mention that other Athericidae larvae (probably all of them are Ibisia marginata [Fabricius, 1781], but some young larvae cannot be identified with sure) were present and quite abundant at all but one sampling sites.  Murányi, Tarjányi & Schöll: First record of the genus Atrichops in Hungary    105Acknowledgements  We are grateful to Dr. László Papp (HNHM) for confirming the identification, and the collagues who allowed us to publish the list of the accompanying taxa identified by them. This work was supported by the Hunarian Danube Research Station of the Hungarian Academy of Sciences.  REFERENCES  CSUTÁK, J.-NÉ (1973): A Morgó-patak hidrobiológiai viszonyairól. Unpublished Thesis, Eötvös Loránd University, Budapest, Hungary, 39 pp. GERKE, N. & BÖTTGER, K. (2001): The life cycle of Atrichops crassipes Meigen, 1820 (Diptera: Atheri-cidae) at the Lower Schierenseebrook, a lake out-flow in the North German Lowland. Aquatic In-sects, 23(2): 85–92. LIEN, P. N. (1984): Környezet és mezofauna - Rhitron tanulmány. Unpublished Phd Thesis, Hungarian Academy of Sciences, Budapest, Hungary, 115 pp. MÁJER, J. (2001): Athericidae. In: PAPP, L. (ed.): Checklist of the Diptera of Hungary. Hungarian Natural History Museum, Budapest, Hungary, 154 pp. ROZKOŠNÝ, R. & NAGATOMI, A. (1997): Family Athe-ricidae.  In: PAPP, L.  &  DARVAS, B. (eds): Contib- utions to a Manual of Palaearctic Diptera. 2: Ne-matocera and Lower Brachycera. Science Herald, Budapest, Hungary, 439–446. PAPP, L. (ed.) (2001): Checklist of the Diptera of Hun-ary. Hungarian Natural History Museum, Budapest, Hungary, 550 pp. PAPP, L. (2004): Twenty species of Diptera new to Hungary. Folia entomologica hungarica, 65: 243–252. PAPP, L. (2006): New record of Diptera species from Hungary, with the list of the Hungarian Scathopha-gidae. Folia entomologica hungarica, 67: 121–128. PAPP, L. (2007): Further Diptera species new for Hungary. Folia entomologica hungarica, 68: 111–122. ROZKOŠNÝ, R. (1980): Řád Dvoukřídlí - Diptera. In: ROZKOŠNÝ, R. (ed.): Klíč vodních larev hmyzu. Československá Akademie Věd, Praha, Czechslo-vakia, pp. 226–457. THOMAS, A. G. B. (1974): Diptères torrenticoles peu connus: I. - Les Athericidae (larves et imagos) du Sud de la France (Brachycera, Orthorrhapha). Annales de Limnologie, 10: 121–130. THOMAS, P. (ed.) (2004): Diptera Brachycera. Fauna Europea version 1.1. http://www.faunaeur.org                 

First record of the genus Atrichops Verrall, 1909 in Hungary (Diptera: Athericidae)

This paper reports on the first known larva of Atrichops crassipes (Meigen, 1820) from Hungary. The single specimen was caught with flushing of stones during a year-long monthly sampling in the Morgó Stream, Börzsöny Mts. Characterisation of the sampling site, list of the accompanying fauna and a figure on the habitus of the specimen are given

Murányi, D.

Tarjányi, N.

Schöll, K.

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First record of the genus Atrichops Verrall, 1909 in Hungary (Diptera: Athericidae)

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