Crambidia pura, the Pure Lichen Moth, is a moth of the Arctiidae family. It was described by Barnes and McDunnough in 1913. It is found in North America, including Arizona, Florida, Georgia, Kentucky, Maryland, Mississippi, New Jersey, North Carolina, Ohio, Ontario, South Carolina, Tennessee, Texas and Wisconsin. There appear to be two generations per year, one at the end of June, the other in mid-August. Larvae feed on lichens.