This is a quite large and heavy moth with a wingspan of 50 to 60 mm. Hindwing yellow with black terminal band; forewing varies from light to dark brown to orangish to grayish, and from almost unmarked to boldly patterned; reniform spot large and either dark or barely visible; small dark patch along costa near apex nearly always present. The larva is green or brown with two rows of black dashes along the back.
This species flies at night from July to September. It will also visit flowers such as Buddleia, ragwort, and red valerian.
no sightings found