The Green Broomweed Looper Moth is about 3/8 inch long and has a wingspan of about 3/4 inch. This moth is often mistaken for a butterfly because it nectars at flowers during the day and holds its wings vertically over its back. The feathery antennae distinguish it from butterflies. The underside of the hindwing is spotted and striped with conspicuous white marks. The upper side of the forewing is plain brown with a bright white distal dash on the costa. The upperside of the hindwing is brown with inconspicuous pale marks. The fringes are checkered brown and white. Presumably the larva is green, but there is no information available on the larva.