Northern Prairie Wildlife Research Center
Wingspan 4.1 cm. Forewing is gold-brown with silvery white spots; hindwing is off white, nearly immaculate; abdomen yellow. This arctiid is abundant west of the Cascade Mountains, less common elsewhere. Moths fly in late July and early August. Caterpillars feed on foliage of Pinaceae, in particular pine (Pinus), fir (Abies), and Douglas-fir (Pseudotsuga menziesii).
Similar species: Lophocampa maculata forewing yellow with brown bands; Hemihyalea edwardsii forewing semitransparent with black markings and a red-pink abdomen. Both of these species feed on foliage of flowering trees, particularly oak (Quercus).