5 species. Large moths traditionally included amongst the Macrolepidoptera but in fact a basal family in the suborder Glossata. Imagines are crepuscular and nocturnal. The males fly at dusk and some exhibit "lekking" behaviour. Females are attracted to light in small numbers and sometimes males also shortly after dark. Ova are scattered usually in flight, and the larvae are subterranean, feeding on the roots of various herbs, grasses, and ferns. They pupate in the soil.