Heteromeringia Czerny

Sasakawa, Mitsuhiro, 2011, Oriental species of clusiid flies (Diptera: Clusiidae: Clusiinae), Zootaxa 3038, pp. 1-28 : 16

Genus Heteromeringia Czerny

Heteromeringia Czerny, 1903: 72 . Type species, Heteroneura nigrimana Loew, 1864 , fixed by monotypy.

Diagnosis. Pedicel with obtuse outer triangular projection and no inner projection; arista minutely pubescent to shortly plumose; prsc absent; lsc one or two; crossvein bm-cu complete, M1 ratio 4.0–8.5, ultimate section of CuA1 slightly shorter than penultimate section; tibiae without pd; surstylus narrow, usually with several spinules on inner tip; cerci separated or united; basiphallus at least partially coiled; hypophallus and paraphallus varying considerably in shape or undeveloped. Males of the nitida -group of Lonsdale and Marshall (2007a) usually have a small, white or yellowish disc on the anepisternum before the posteroventral mesopleural suture (present in the Oriental H. abatanensis sp. nov., H. didyma Sasakawa, 1966 , H. helicina Sasakawa, 1966 , H. melaena Sasakawa, 1966 , H. nitobei Sasakawa, 1966 , H. paraphalloides sp. nov., H. pectinata sp. nov. (female too), and H. steyskali Sasakawa, 1966 , but absent in H. melanoprotoma sp. nov..

Remarks. This genus is widely distributed in tropical and warm-temperate areas of the world, with 16 species hitherto known from the Oriental region ( Czerny 1926; Frey 1928, 1960; Sasakawa 1966, 1993). A key to the Oriental and Pacific species of this genus was given by Sasakawa (1966).