S. Mahunka szerk.: Folia Entomologica Hungarica 45/1. (Budapest, 1984)

apical ad seta. - Wings: Tegulae fuscous yellow to almost black; basicostae pale yellow. - Abdomen: Yellowish grey Pollinose, exept for dark spots around setae and setulae; ground colour entirely dark except for yellow fields confined to Tl-3 in 3 of the 10 males available; Tl+2 with one pair of lateral marginal setae of strength as average abdominal setae but without median marginal setae; T3 with one median and one lateral pair of marginal setae; T3-5 with basal bands devoid of ground setulae and dorsally occupying about one-fifth of respective tergites. - Genitalia (2 dissections). St5, as in Fig. 3, with apex of lobes curved inwards, and with seta inserted near middle of inner lobal margin; cerci and surstyli, as in Fig. 2, with distal half of cerci of almost same width (not tapering as in Ingerae) and tip more or less curved foreward; distiphallus (Fig.l) of distinctive shape, only resembling Ingerae among the European species, but differs from this species in the much narrower proximal part and the different structure of teeth and tooth-bearing plates, of which the most anterior plates appear completely fused; distiphallus in anterior view with V-shaped opening. Description of female. Differs from the male in the following essentials: Lower half of parafacials in profile about as broad as maximal width of palpi; antennae slightly longer than length of frons; antennái segment 3 narrower than maximal width of front femora; palpi strongly clavate apically, with tips bare or almost so; femora entirely yellow; claws about half as long as last tarsal segment; abdomen entirely dark in ground colour; T3-4 with basal bands devoid of ground setulae, dorsally occupying a quarter (near the middle) to a third (laterally) of respective tergites; genitalia (3 dissections), as in Fig. 4, and very similar to those of S. maculata Staeger in Zetterstedt, but with distinct supraanal plate consisting of two small plates, each with 1-2 setulae, which are conditions elsewhere only found In mesnlll Andersen among European Siphona; St6 with posterior margin more deeply incised than in Ingerae (Fig. 5) and mesnili (Fig. 6); St8 with 3-4 pairs of lateral setulae. Affinities: As mentioned above the new species is most similar to Ingerae Andersen, however, easily separated from this species by external characters (as listed in the key as follows), and also by structures of the genitalia. A North American species, S. intrudens (Curran), is very similar externally, but has the surface colouration bluish grey or grey and an U-shaped opening of the anterior surface of distiphallus (see O'HARA, 1982). S. hungarica sp.n. may be incorporated in the key to European Siphona by ANDERSEN (1982) as follows. 1 Male claws about as long as last tarsal segment; female T3-4 with basal bands devoid of ground setulae, dorsally occupying a quarter (near the middle) to a third (laterally) of respective tergites; genae 0.3-0.5x as wide as height of an eye; length of haustellum varying between eye height and head height 1 (a) Male claws only half as long as last tarsal segment; female T3-4 with basal bands devoid of ground setulae narrower; genae up to one third as wide as eye height 2 1 (a) Mid femora normally without ad preapical seta (specimens with distinct seta extremely rare); knob of haltères blackish; Tl+2 with weak lateral marginal setae (intermediate in strength between surrounding marginal setulae and lateral marginal setae of T3); male palpi with setulae as long as or longer than palpal width ingerae Andersen Mid femora with ad preapical seta; knob of haltères yellow; Tl+2 with lateral marginals erect and of same strength as lateral marginals of T3; male palpi with much shorter setulae hungarica sp. n. 2 Lateral marginal setae of Tl+2, if differentiated, only slightly stronger than surrounding marginal setulae 3 Lateral marginals of Tl+2 about as strong as setae of T3 4 Acknowledgements: I thank Dr.F. MIHÁLYI of the Hungarian Natural History Museum (Budapest) and Dr.S. TOTH of the Bakonyi Természettudományi Múzeum (Zirc) for loan of specimens of S. hungarica. I am grateful to Dr. V. MICHELSEN, Zoological Museum (Copenhagen) for his review of the manuscript.