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)

ANNALES HISTORICO-NATURALES MUSEI NATIONALIS HUNGARICI Tomus 75. Budapest, 1983 p. 211-227. Revision of the East Palaearctic species of the Leptocera (s. str.) fontinalis-group (Diptera, Sphaeroceridae) by J. ROHÁCEK, Opava and L. PAPP, Budapest Abstract — Leptocera (s. str.) fontinalis-group comprises at least 8 species in the East Palaearctic. Two new species, viz., L. vomerata sp. n. and L. dyscola sp. n. (both from USSR: Amur area) are described ; L. equispina L. PAPP, 1973, L. parafinalis L. PAPP, 1973 and L. spinitarsata L. PAPP, 1973 (all from Mongolia) are fully redescribed with figures of the male and female terminalia. New records of L. finalis (COLLIN, 1956) and L. caenosa (RONDANI, 1880) from the East Palaearctic are. given and a key to the identification of the L. fontinalis-group of this area is presented. With 42 figures and an appendix recording L. nigra OLIVIER, 1813 from the East Palaearctic area. The present study follows ROHÁCEK'S (1982a) revision of the European species of the subgenus Leptocera (s. str.), but it is restricted to the L. fontinalis-group. This species-group comprises a number of closely related species (particularly in the East Palaearctic) that can hardly be recognized without knowledge of their male and female postabdominal structures. For this reason it appeared reasonable to redescribe the three Mongolian species described by L. PAPP (1973). A small number of additional specimens from Amur area (USSR, Far East) received from Dr. A. SHATALKIN (MGU) proved to be an extraordinarily useful contribution to our revision, containing two species new to science and some other species hitherto unrecorded from this area. The Leptocera fontinalis-group was defined by ROHÁCEK (1982a) as follows: thorax without velvety spots; mid tibia with 2 posteroapical bristles subequal in length (either both short or both prolonged); some of the medial acrostichals more or less enlarged; male 5th sternum simple, without posterior lobes; telomere (surstylus) bipartite, with a characteristic anterior, finely haired projection and its hind part (see Fig. 2, HTE) with robust apical spines; postgonite angularly bent in proximal part (Fig. 3); female 8th sternum longer than wide; female 9th tergum not strikingly large compared to other parts of postabdomen; spermathecae not very elongate. Defined in this way, the L. fontinalis-group includes 10 species in the Palaearctic Region» 8 of them occurring in the East Palaearctic. These are L. fontinalis (FALLÉN, 1826), L. vomerata sp. n., L. equispina L. PAPP, 1973, L. parafinalis L. PAPP, 1973, L. finalis (COLLIN, 1956), L. spinitarsata L. PAPP, 1973, L. dyscola sp. n. and L. caenosa (RONDANI, 1880). The remaining two species are known only from the West Palaearctic — L. alpina ROHÁCEK, 1982 and L. oldenbergi (DUDA, 1918)*. Leptocera nigrolimbata DUDA, 1925 (recorded from East Siberia by DUDA 1938) is considered a species belonging to a different species-group of Oriental origin (see ROHÁCEK 1982a) and is therefore excluded from the present revision. *L. oldenbergi (DUDA) has been known only from North, West and Central Europe until now (ROHAÖEK 1982a). In TMB there is a male of this species from USSR (Georgia, Gulripsch, 1. V. 1975, K. SIN leg.) which is an important record, extending its known distribution eastwards. Annls hist.-nat. Mus. natn. hung.. 75,1983 14*