The nematoceran family Psychodidae (moth flies or drain flies) are small true flies (Diptera) with short, hairy bodies and wings giving them a "furry" moth-like appearance. The adults have long antennae and the wings are leaf-shaped, either slender or broad, with the most elementary wing venation of any Diptera, having little more than a series of parallel veins without crossveins. Adult Psychodidae are typically nocturnal and associated with damp habitats. The larvae of the subfamilies Psychodinae, Sycoracinae and Horaiellinae live in aquatic to semi-terrestrial habitats, including bathroom sinks; some species are commonly found in bathrooms.  Prevention is best accomplished by removing food sources such as hair clogs in drains.
^Desportes, C. 1941. Forcipomyia velox Winn et Sycorax silacea Curtis, vecteurs dIcosiella neglecta (Diesing, 1850) filaire commune de la grenouille verte. Annals de Parasitologie Humaine et Compareè, 19: 53-68.