Acta Zoologica Academiae Scientiarum Hungaricae

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P. Viri OES SP. n. i S an eaSily recognis able species. The Ventral row of thic k medium long black spines on male fore tibia seenas unique among the species of the genus. Also the male genitalia show characteristic features in separat ing it frona the other species of the P. VarianS- nigria specieS group. The two patrS of Very longs e male cercal hairs are also Very characteristi C. Poecilosomella Suhsettim nun Sp. n.

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EIGHTEEN NEW ORIENTAL SPECIES OF POECILOSOMELLA DIPTERA: SPHAEROCERIDAE) l 4Jshori fetae. Cerci normal. Suhepandriat scieri te Fig. 66) rather simple with a sagittat surrow, covered partly hy black thorialeis and with sonae medium long setae not only marginalty. Male surstylUS Fig. 6J) bit obed: anterior lobe inci sed apical ly, with numerotis long setae, posterior lobe en larged Caudat ly with a strong apical tooth and subbasalty with an extremely long nat thorn-like process. This process is curved mediocaudat ly, following the curvature os surstyli and epandrium. and is hordei ed by long. but stightly curved. setae. Postgonite Fig. 68) rather simple: twice curved but mediat part almost straight. with hlunt apex and with a limited number of minute posterior hairlets.

P. Subilimiana Sp. n. is not an eas ity recognisable species by body charactei istic s. It is hypothesi Zed that this species is not a member of the species-group of P. himal en viS, P. annulitibia and P. nepalensiS, centred in distribution in the Hima- layas see DEEM IN G l 969). although it keys with himalayensis on account of iis similar wing venation and male naid tibial structu res. The only reli able characters for iis identification are in the male genitalia: in this respect it is similar to P. PilimGria Sp. n. . particularly because of the extreme ly long black proces s spine) on

A KEY TO THE ORIENTAL SPECIES OF POECILOSOMELLA

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L. PAPP

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29 26) No ventral or antero ventral setae on mid tibia, except for the ventral seta at

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basi tarsus. Tibiae without light rings, at iraost apices lighter.

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feta hut ventroapi catly at most with a transverse row of more or tesscurved, longer halios instead. Male fore tibia venti ally and anteriori y, asweli as fore basi tarsus, or even other tarsOmeres, with long hali S.