Northern Prairie Wildlife Research Center
Wingspan 4.6 cm. Forewing is gray with distinct discal spots outlined in black, including a jagged, dentate black submarginal line. This noctuid is common in wet conifer forests in the Pacific West. Moths fly in mid to late summer. Caterpillars feed on the foliage of alder (Alnus), maple (Acer), ocean spray (Holodiscus discolor), and ninebark (Physocarpus capitatus).
Similar species: Andropolia theodori forewing is pink to purple, hindwing red, uncommon but widely distributed in dry forests, caterpillars feed on snowbrush (Ceanothus velutinus) and ocean spray (Holodiscus discolor).