Northern Prairie Wildlife Research Center
Wingspan 3.3 cm. Forewing is gray with fine dark longitudinal lines and a broad pale yellow to orange median band. This notodontid is common and widely distributed in western North America. Moths fly from late spring to midsummer. Caterpillars feed on the foliage of willow (Salix) and poplar (Populus).
Similar species: Gluphisia severa is larger, forewing mottled dark gray to black-gray; species of Dasychira forewing with a white subanal spot or white median patches on the forewing.