Northern Prairie Wildlife Research Center
Wingspan 3.2 cm. Forewing is pale yellow to light brown with small discal spots, basal line strongly transverse and nearly touching the postmedian line along the inner margin; hindwing is white. This noctuid is common in oak woodlands in the Pacific West. Moths fly in midsummer. Caterpillars feed on the foliage of oak (Quercus).
Similar species: four species in the noctuid genus Ipimorpha (Noctuidae) have a completely straight basal line and two species in the noctuid genus Enargia (Noctuidae) have a v-shaped basal line. These species occur in the Rocky Mountain region, caterpillars feed on willow (Salix) and quaking aspen (Populus tremuloides).