 The genitalia of the male often are free and borne on a petiole, with tergite 8 being asymmetrical, lying on the left side of the epandrium.They are also rotated dextrally between 90° and 180°, including segment 8 and sometimes segment 7, which makes them distinguishable from the family Hybotidae.Males of most species have well developed gonopods of two or three lobes on the distal margin of the epandrium.