Sympistis cocytus

Sympistis cocytus is a moth of the family Noctuidae first described by James T. Troubridge in 2008. It is found in North America from south central British Columbia south to eastern Oregon at elevations from the tree line to the ponderosa pine zone of 2000 to 6300 ft.

The wingspan is 32 to 39 mm. Adults are on wing from mid-August to late September.