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A medium-small moth (2.8-3.0 cm. wingspan) with grey-brown forewings and dirty white hindwings. Forewing marking reduced , but the antemedian and postmedian lines are at least partly traceable in many specimens. The most prominent marking is the dark bar forming the reniform spot, and in some specimens also a dark orbicular dot. The forewings darken toward the outer margin into a broad dark grey brown terminal shade. The hindwings are white, with a grey discal mark and some grey-brown shading along the outer margin. Antennae simple. Sexes similar.

A prairie species, found from New Jersey and New Hampshire, Ontario, Ohio and Wisconsin west across southern Canada to BC, south to California and Arizona. In Alberta it has been collected throughout the grasslands region, as well as in the boreal forest near Ft. Assiniboine and the mountains at Waterton Lakes National Park.

In eastern North America this moth is associated with remnant prairie grasslanmds and is thus a rare moth. It is much more common and widespread in the open spaces of the west. Until fairly recently it was placed in the genus Platyperigea.