Northern Prairie Wildlife Research Center
Wingspan 2.3 cm. Forewing is gray with a broad brown postmedian band curved and outlined in black. This geometrid is common and widely distributed in pine forests and juniper woodlands of western North America. Moths fly in mid to late summer. Caterpillars feed on the foliage of bitterbrush (Purshia) and sagebrush (Artemisia).
Similar species: Itame decorata is larger, forewing is mottled gray, occurs at higher elevations in the Cascade Mountains, caterpillars feed on foliage of currants (Ribes); species of Semiothisa lack the brown postmedian band.