Sterrhopterix fusca is a species of moth in the Psychidae family.
This species is very rare in Britain, and possibly extinct in Britain. The female is wingless, but the male has broad wings which have few scales, which make them look very worm, but they look this way when fresh. Active in summer, this species is found in heaths and woods, and the winged males can be attracted to light. The larval case can reach 2cm in length, and has plant matter on it.