The ghost moth (Hepialus humuli), also known as the ghost swift, is a moth of the family Hepialidae. It is common throughout Europe except for the far south-east. This species is often considered the only species in the genus Hepialus and a number of previously included species is now reclassified into other genera. However, other authorities retain a number of species in the Hepialus genus. The larva is whitish and maggot-like and feeds underground on the roots of a variety of wild and cultivated plants (see list below). The species can be an economically significant pest in forest nurseries.