Color and markings are highly variable. Fringes on forewing are mostly black with some white, those on the hindwing are mostly white with a few black patches. Forewing ranges from brown with black borders through brownish gray with paler borders to pale gray with no borders. Dashes, submarginal line, and cell spot are usually weak. Hindwing is gray to yellow-gray with a black border and a black median line which ranges from distinct to diffuse.
Relative abundance varies throughout the range.
G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery. Foodplants of Sphingidae in Wisconsin. Covell Jr., C. V. 1984. A field guide to the moths of eastern North America. Ferguson, D. C. 1955.