About Catocala verrilliana Grote, 1875
Catocala verrilliana, commonly known as Verrill's underwing, is a moth species that belongs to the family Erebidae. This species was first formally described by Augustus Radcliffe Grote in 1875. Within the United States, it can be found across the range from Washington and Oregon extending to Colorado, southward to California, Arizona, and Texas, and also in Cimarron County of western Oklahoma. The wingspan of adult moths measures between 45 and 60 millimeters. Adult Verrill's underwings are active from May through September, with the exact flight period varying based on location. This species likely produces only one generation per year. The caterpillar larvae of Catocala verrilliana feed on three species of oak: Quercus macrocarpa, Quercus alba, and Quercus garryana.
