Head small, retracted; tongue short and weak, membraneous; palpi very short and feeble. Legs moderate, rather short; tibial spurs present but very feebly developed. Fore tibiæ unarmed. Antennæ moderately long, bipectinated in the male, simple or serrate in the female. The tarsal claws are toothed in all the species examined. In virginica the posterior tarsi only, in vestalis all are toothed.