Field Guide Descriptions: Covell (1984); Beadle and Leckie (2012) | Online Photographs: MPG, BugGuide, GBIF, BOLD | Technical Description, Adults: Barnes and MacDunnough (1918); Forbes (1954); Sargent (1976) | Technical Description, Immature Stages: Forbes (1954); Wagner et al.(2011) | |
Adult Markings: A large, powdery Underwing, with blue-gray forewings and orange- or crimson-and-black banded hindwings. The ground color of the forewings is pale gray, mottled with white and dark gray. The antemedian is dark and waved, the postmedia dark and dentate, and the subterminal regularly dentate and contrastingly filled with white. The reniform is fairly diffuse. No other species in our area is similar in pattern. |
Wingspan: 70-90 mm (Sargent, 1976) |
Adult ID Requirements: Identifiable from good quality photos of unworn specimens. |
Immatures and Development: Larvae are gray with a reddish hump on A5; the side of the head has strong black striping that joins across the vertex (Forbes, 1954) |
Larvae ID Requirements: Identifiable from good quality photos, especially where associated with known host plants. |