Kaszab Zoltán (szerk.): A Magyar Természettudományi Múzeum évkönyve 75. (Budapest 1983)

Roháček, J. ; Papp, L.: Revision of the East Palaearctic species of the Leptocera (s. str.) fontinalis-group (Diptera, Sphaeroceridae)

Acknowledgements — We are deeply indebted to DR. A SHATALKIN (MGU) for enabling us to study his material from Soviet Far East. Our thanks are further extended to MR B. R. PITKIN (British Museum, Natural History, London) who kindly improved the English of this paper and added valuable comments. Abbreviations of museums and collections are as follows : MGU — Moskovskij Gosudarstvennyj Universitet, Moscow (USSR); SMO — Slezské múzeum, Opava (Czechoslovakia); HNHM — Zoological Dept. Hungarian Natural History Museum. Budapest (Hungary). KEY TO THE EAST PALAEARCTIC SPECIES OF THE LEPTOCERA (S. STR.) FONTINALIS-GROUP 1 Arista long or very long haired. Wings either distinctly greyish or 3rd—5th segments of male fore tarsus dilated, male periandrium with dense long hairs and female 7th tergum with long setiform hairs 2 — Arista short to very short haired. Wings always brownish, male fore tarsi never dilated, periandrium with sparse short hairs and female 7th tergum with short setae except for those in posterior corners 3 2 (1) Arista very long haired. Wings with brownish membrane. 3rd—5th segments of male fore tarsi dilated. Male periandrium with very dense and long hairs, pseudocerci strongly reduced (see ROHÁCEK, 1982a: Figs 60—61). Female 7th tergum with long setiform hairs, 9th tergum strongly reduced and spermathecae with characteristic body sculpture (ROHÁCEK, 1982a: Figs 65—68) L. caenosa (RONDANI) — Arista somewhat shorter haired. Wings distinctly greyish. Male fore tarsi not dilated. Male periandrium with long but sparse hairs (Fig. 28) and pseudocerci well developed (Fig. 29). Male 5th sternum (Fig. 31) and telomere (Fig. 32) characteristic. Female 7th tergum short haired except for long bristle in posterior corner and 9th tergum large (Fig. 33); body of spermatheacae without sculpture but with several small tubercles (Fig. 37) L. dyscola sp. n. 3 (1) Posteroapical bristles and usually seta just above the long dorsal bristle on mid tibia long (Figs 21, 22) 4 — Posteroapical bristles and usually seta just above the long dorsal bristle on mid tibia small (Figs 4, 5) 5 4 (3) Anterior, finely pubescent, projection of fore part of telomere much shorter, distally hardly tapered and with stronglysclerotized anterior corner; posterior lobe of the fore part of telomere longer (higher) and triangular in lateral view (ROHÁCEK 1982a : Fig. 37). Female 9th tergum with a pair of dorsal setulae; cerci short haired (ROHÁCEK 1982a: Fig. 39) L. finalis (COLLIN) — Anterior, finely pubescent, projection of fore part of telomere distinctly longer and with a tapered apex without strongly sclerotized anterior corner; posterior lobe of fore part of telomere shorter (lower) and suboblong in lateral view (Fig. 19). Female 9th tergum bare, fused with cerci which bear unusually long apical sinuate hair (Fig. 15) L. parafinalis L. PAPP 5 (3) Males 6 — Females (female of L. vomerata sp. n. and L. spinitarsata unknown) 9 6 (5) Hind part of telomere with long setiform hairs concentrated in a cluster on its proximal part (Fig. 2) 7