Oropezella are Ocydromiines with antennae placed high on the head and abdomen not heavily sclerotised (see Chvalaea for abdomen with heavy sclerotisation). The wings have vein Rs long (ie arrising from R1 at or before the middle of cell bm), cell dm is long and with two veinlets emitting apically, and the anal lob weakly developed (click wing venation link for these features demonstrated from a specimen).
Oropezella is not listed officially as occurring in Australia but the flies presented here fit that genus following the keys and descriptions (eg. Sinclair and Cummings (2000), Plant (1989)). A female specimen captured has the frons narrow and the face almost obliterated by the eyes touching for most of the length below the antennae.