Ceratophaga vicinella is a species of moth belonging to the family Tineidae. It has a restricted range in the southeastern United States, mainly in Florida and Mississippi. This species appears to be in decline, almost certainly because the gopher tortoise (Gopherus polyphemus) is under threat; the moth relies on the tortoise in a unique way. All Ceratophaga larvae feed, uniquely among Lepidoptera, on solid keratin. Most species feed on the horns and hooves of dead ungulates but C. vicinella feeds exclusively on the shells of dead gopher tortoises.