Key to the genera of the Carpomya group of genera

1. Wing: vein R4+5 setulose over both sections; both crossveins R-M and DM-Cu in association with subapical band; ocellar seta large (as in Fig. 2)...................................................................... Norrbomella n. gen.

-. Wing: vein R4+5 setulose only at node, rarely with 1–3 setulae on basal section; only crossvein DM-Cu in association with subapical band (as in Fig. 8); ocellar seta variable............................................................... 2

2. Proboscis geniculate; head triangular in lateral view; ocellar seta large (Fig. 2); cell cup without distinct posterodistal lobe (Fig. 8)................................................................................. Goniglossum Rondani

-. Proboscis capitate; head more or less square in lateral view; ocellar seta variable; cell cup with small but distinct posterodistal lobe................................................................................................ 3

3. Face high, about twice as high as antenna length; frontofacial angle protuberant; ocellar seta large; 3 spermathecae.............................................................................................. Myiopardalis Bezzi

-. Face lower, about 1.5 times as high as antenna long; frontofacial angle rounded; ocellar seta small, setula-like; 2 spermathecae....................................................................................... Carpomya Costa