Lasionycta impingens impingens (Walker)
Figs 101–103, 183, 238. Map 21
Anarta impingens Walker, 1857: 700 .
Subspecies impingens is small (expanse 25–27 mm) and has a dark lead-gray forewing with relatively inconspicuous dark markings. Th e dorsal hindwing marginal band is usually homogeneously dark. It occurs from southern Yukon southward in the Rocky Mountains to southern British Columbia and Alberta, and in southwestern British Columbia at Pavilion north of Lillooet.