Catocala relicta Walker, 
Status: Resident or stray.
Range: Found in the northern half of the United States south to the Virginias, and the northern portions of New Mexico and Arizona.
Larval Hostplant(s): Poplar (Populus) and Willow (Salix).
NENHP Ranking: Not listed
Broods/Flight Times: A single summer brood, July into October.
Habitat: Deciduous woodlands.
Avg. Wingspan: Medium sized Underwing. 2 2/3 – 3 Inches.
Found at: Harlan County Reservoir.
Overwintering: As eggs on tree bark.
Identification: Black and white bands on HW distinctive. Forewing variable, white to gray. (1)
Similar Species: None.
Notes: Identifying features illustrated.
Literature Cited: (1) BugGuide.net