Wings without dark spot beyond tip of second vein; hind femora swollen compared with middle femora, with numerous bristles below; body longer than 4 mm; 2 notopleural, no supraalar bristles present; stigma distinct, much darker than wing; stigma elongate oval; ratio of marginal cell to submarginal cell at apex of first vein 1.5/1 or less. Wilder, 1973