Lasionycta impingens

Lasionycta impingens is a moth of the family Noctuidae. It occurs from southern Yukon to Colorado.

It is diurnal. Adults are common in alpine tundra. It feeds on nectar of a Penstemon species on the Beartooth Plateau, Montana, as well as on Mertensia paniculata and a Senecio, likely Senecio lugens at Pink Mountain, British Columbia.

Adults are on wing in July and August.

Subspecies

 * Lasionycta impingens impingens (from southern Yukon southward in the Rocky Mountains to southern British Columbia and Alberta, and in southwestern British Columbia at Pavilion north of Lillooet)
 * Lasionycta impingens curta (in the Rocky Mountains from southern Montana to Colorado)