Hippoboscidae

Robust more or less dorsoventrally flattened flies, 1.5-12.0 mm long, usually dull with variable and poorly defined pale markings, and richly setose. Antenna and mouthparts highly specialized. Wing usually fully developed, rarely reduced or absent. Abdomen, particularly in female, mainly membranous. Aedeagus and gonopods of male simple, retracted into abdomen when at rest. Larva completing development in uterus of female. (Maa & Peterson 1987)