Adult: forewing brown, sometimes shaded with green; large dark brown V-shaped patch in median area, with a small sharp tooth projecting from the costa toward the median patch; PM line thin, black, with small teeth in lower half, and sharp-angled bend in upper half near costa; subterminal line thick, dark brown, terminates at pale apical patch; outer margin scalloped; hindwing brown with darker lines and veins, and pale yellowish strip along costa
coast to coast in northern United States and southern Canada, south in the east to Georgia and Mississippi, south in the west to California (absent from Florida and the southcentral states)
adults fly from late July to October
larvae feed on leaves of alder, Balsam Fir, cranberry, plum, and other woody plants
Sharp Angle Shades
) is smaller (wingspan about 30 mm), its forewing lacks a scalloped outer margin, and has a blunt-tipped projection extending from costa toward median patch; it is restricted to the northeast, and its flight season is finished by the end of July.
Olive Angle Shades
) has a similar pattern, but the large v-shaped patch in the median area tends to have a distinctive olive-green tone, as do other markings on that species.
Covell, p. 129 & plate 25 #10 (1)
distribution in Canada
list of provinces (U. of Alberta, using CBIF data)