Common Idia - Idia aemula

''Idia aemula'', the common idia, powdered snout or waved tabby, is a litter moth of the family Erebidae. It is found from Canada south to Florida and Texas. It has been reported in the Palearctic. In North America, adults are on wing from May to October in the north and from April to November in the south. There are two to three generations per year.