About Catocala subnata Grote, 1864
Catocala subnata, commonly called the youthful underwing, is a moth species belonging to the family Erebidae. This species was first formally described by Augustus Radcliffe Grote in 1864. It is distributed across North America, with a range that extends from Manitoba, Ontario, Quebec and New Brunswick in the north to Nova Scotia. From this northern range, it extends south through Maine and Connecticut to North Carolina, and west to Tennessee, Kentucky, and Texas. From Texas it extends north again to Iowa, Wisconsin, and Michigan. The wingspan of adult Catocala subnata measures between 75 and 90 mm. Adult moths are in flight from July to September, with flight timing varying by location. This species likely produces only one generation per year. The larvae of Catocala subnata feed on Carya cordiformis, Juglans cinerea, and Juglans nigra.