Tribe Dactylomyiini Naglis, 2001b

Diagnosis [modified from Naglis (2001b)]. Dorsocentral setae consisting of 2–3 strong setae and short reduced setae anteriad (except Argentinia, with 6–7 conspicuous setae); wing vein M 1 S-shaped, joining costa anteriad of apex close to vein R 4+5, with distance between M 1 and R 4+5 at wing margin at most half-length of crossvein m-m; legs devoid of major setae; male fore tarsomeres often modified with special chaetotaxy, expansions, or appendages; male claws of leg I sometimes modified or reduced; male hypopygium entirely or mainly yellow; female oviscapt with tergites 9+10 blunt and rounded, with sternite 10 (“cercus” in Naglis’ terminology) free from tergite 9+10.