S. Mahunka szerk.: Folia Entomologica Hungarica 64. (Budapest, 2003)

A new species of Polyodaspis Duda (Diptera: Chloropidae) from Hungary 343 sternum and on coxae golden. Legs shining, with setulae paler on ventral surface. Scutellum nearly semicircular, with slightly longer setulae on disc than on scutum, apical scutellar setae long (half length of scutellum), approximated and slightly divergent. Numerous (more than eight) pairs of subapical marginal setae developed. All marginal scutellar setae on small tubercles. Ventral surface of scutellum dusted. Wing. Clear, veins yellow-brown, darker basally, cell br greatly widened at level of base of R, to twice width at apex, R, strongly, R

2+3 and R

4+5 more gently curved to costa. M-Cu strongly oblique. Haltère black. Abdomen. Flat on disc, outline rounded and broad, broadest at end of tergite 1+2; shining through light dusting, more pronounced near base. Tergites 3 and 4 equal in length, 5 almost twice as long as 4 and narrowed to a truncate tip. Cercus slender, black. DISCUSSION This species is slightly atypical of the genus because it has slightly convergent postocellar setae, whereas the Lasiambia genus group is currently defined by the postocellar setae being parallel (Andersson 1977, Ismay & Nartshuk 2000, Kanmiya 1983, Nartshuk 1983). The approximated apical scutellar setae, very short and numerous subapical marginal setae, gena divided into silver dusted dorsal margin and shining ventral area, and the broadened cell br are all characters of all or some Polyodaspis and the species is placed therein. Within Polyodaspis, P. convexa is easily distinguished by the swelling on the frons. P. sulcicollis has much longer head setae, usually whitish in colour, and widely separated apical scutellar setae. P. ruficornis is more similar to P. convexa, but lacks the convex swelling on the frons and has much longer head setae (including an inner vertical seta), a developed postpronotal seta and the vibrissal angle is more produced anteriorly. Acknowledgements - We thank Dr László Papp of the Hungarian Natural History Museum, Budapest, Hungary, for hosting our stay in the museum and allowing research on this unusual specimen. Dr Agnes Dely-Draskovits deserves our sincerest thanks for her help and hospitality. The first author wishes to thank the British Entomological and Natural History Society (BENHS) for financial assistance for this project.