About Catocala antinympha Hübner, 1823
Catocala antinympha, commonly known as the sweetfern underwing, is a moth species belonging to the family Erebidae. It was first described by Hübner in 1823. This species is distributed from Quebec and Ontario eastward to Nova Scotia, and southward to Connecticut, Rhode Island, New York, Massachusetts, Pennsylvania, and Maryland. The wingspan of adult individuals ranges from 45 to 55 mm. Adult moths are active from July through September, and the species produces one new generation each year. The larvae of Catocala antinympha feed on Comptonia peregrina.
