Northern Prairie Wildlife Research Center
Females are wingless. The male wingspan is 4.5 cm. Forewing is gray with pale mottling, no white subanal spot. This lymantriid is common and widely distributed in western North America. Moths fly from early to late summer. Caterpillars are generalist feeders on the foliage of flowering trees, particularly oak (Quercus) and maple (Acer).
Similar species: Dasychira grisefacta with darker wings and a white subanal spot on the forewing, caterpillars feed on foliage of species of Pinaceae; species of Gluphisia have banded markings on the forewing and no subanal spot.