Family Nemestrinidae - Tangle-veined Flies

Male eyes holoptic in male, with differentiated facets, eyes densely pilose or bare, ocelli usually well developed, antennae with stylus composed of 3 flagellomeres, first flagellomere oval or conical, face flat to slightly convex, proboscis vestigial or developed, if long, at rest often tucked between coxae.

Postpronota small and hidden, postalar callus strong, sutellum short and broad with submarginal groove, subscutellum often present sometimes large.

Legs rather slender and hairy, first tarsomere of each leg long, tibiae without spurs, empodia and pulvilli sometimes very small, former pulvilliform.

Wing branches of R and M more or less converging to apex of wing; branches of M curving forward and ending before or scarcely behind apex of wing, and with a composite 'diagonal vein' running from distal end of cell br to posterior margin of wing, four branches of R, M1, M2, and M3 present, cell d closed, CuA2 free or meeting A1 in an acute angle near wing margin, alula poorly or well developed, calypters normal.

Bequaert J. (1930) Notes on American Nemestrinidae. Psyche 37:286-298 (Full text)

Bequaert J. (1934) Notes on American Nemestrinidae, second paper. J. New York Ent. Soc. 42: 163-184 (First page)