Northern Prairie Wildlife Research Center
Wingspan 2.8 cm. Forewing is pale yellow to brown with a jagged dark brown median band. This geometrid is common and widely distributed in wet conifer forests of western North America. Moths fly in early summer. Caterpillars feed on the foliage of flowering trees and shrubs, particularly maple (Acer), blueberry (Vaccinium), and ocean spray (Holodiscus discolor).