Cosmetopus, Becker, 1894

Ozerov, A. L. & Krivosheina, M. G., 2023, Contribution to the fauna of dung flies (Diptera: Scathophagidae) of Russia with a key to genera and a checklist of the Russian Scathophagidae, Russian Entomological Journal 32 (1), pp. 95-122 : 101

KEY TO SPECIES OF COSMETOPUS OF RUSSIA

1. Palpus band-like, dark brown (Fig. 5). Male sternites 4 and 5, epandrium, cerci and surstyli as in Figs 69, 74, 75, 77, 78 .......................... C. dentimanus (Zetterstedt)

— Palpus yellow, somewhat darkened at the end. In the male the palpus begins very thin but suddenly widens in the distal third and is as a whole spatulate (Fig. 6). In the female the palpus is only slightly widened before the apex. Male sternites 4 and 5, epandrium, cerci and surstyli as in Figs 68, 72, 73, 79, 80 ............ C. longus (Walker)