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A rather small (2.7 cm. wingspan) grey moth. Forewings are smooth dark grey and paler grey-brown. The lower two-thirds of the forewing between the antemedian and the postmedian lines is a sharply defined dark red-black block. The lines defining this block are pale pink-brown, and a silvery stigma comprised of a shallow arc forking into two diverging arms above marks the upper edge. Hindwings are dark grey with a wide diffuse white median band. Antennae are simple and both the sexes are alike. The only similar patterned moth is the grey form of the much larger Anagrapha falcifera, which has a different hindwing pattern.

Across the arctic from Labrador to central Alaska, north to coastal Greenland and Ellesmere Island, south in the Rocky Mountains to Alberta. In Alberta, it has been collected in alpine areas from Jasper National Park south to Nordegg.