Reportedly, this is one of the most common and widespread moths in the Pacific Northwest, but that doesn’t make this sighting any less special. Adults fly in mid to late June and do not feed. Caterpillars fatten up on plants in the willow family, including willows, cottonwoods, and quaking aspen. This species occurs in forest and riparian habitats across the west, from southern British Columbia and southern Alberta south to near the border with Mexico. 

Size: Adult forewing length 34-47 mm

Photo by: Barbara Fowler on 6/11/22 in Missoula, MT