Archisargidae

Moderate- to large-sized flies. Body robust but usually narrow and long, strongly pubescent but devoid of bristles; first flagellomere of antenna unsegmented, arista well developed at tip of first flagellomere; hind legs stout and long, femora clavate; tibial spurs and pulvilliform empodium well developed; wing narrow and long, subpetiolate, alula absent; all longitudinal veins well developed, ending at wing margin; C running around entire wing margin although thinned near to, or beyond, wing tip, C and R strong, Sc and R1 long, R4+5 bifurcated, R2+3 usually straight and long but in some specific members R2+3 short and significantly curved [see Figure 4, Daohugosargus eximius (KY Zhang et al., 2008) comb. n., originally Sharasargus eximius KY Zhang et al., 2008], in most representatives crossvein r-m meeting R4+5 distad to Rs fork but in some specific members far basad to Rs fork (see Figure 4, Daohugosargus eximius), origin of Rs usually basad to, but in some specific members distad to, d base (see Figure 4, Daohugosargus eximius), discoidal cell shifted distally of wing midpoint.