The pearl crescent is a common North American butterfly. It is found almost everywhere through out the US except for the west coast. It can also be found in most of Mexico and parts of southern Canada. Adult are usually found in open fields, roadsides, pastures and other open spaces where they feed on nectar from a variety of flowers including milkweed, dogbane and asters. Pearl crescents lay their eggs on the underside of aster leaves which is what the larva, caterpillar, eat.