Waxworms are the caterpillar larvae of wax moths, which belong to the snout moth family (Pyralidae). Two closely related species are commercially bred – the lesser wax moth (Achroia grisella) and the greater wax moth (Galleria mellonella). They belong to the tribe Galleriini in the snout moth subfamily Galleriinae. Another species whose larvae share that name is the Indian meal moth (Plodia interpunctella), though this species is not available commercially.