Northern Prairie Wildlife Research Center
Wingspan 4.8 cm. Forewing is elongate, gray with no distinct markings; hindwing is brown. This is the most common and widely distributed species of the forest-inhabiting Cucullia. Moths fly in late spring and early summer. Caterpillars feed on the flower heads of herbaceous Asteraceae.
Similar species: Cucullia speyeri has the basal part of the hindwing white with a brown submarginal band, occurs in pine forests and juniper woodlands; Cucullia florea forewing is gray with a black comma-shaped subanal spot and more distinct discal spots, occurs in high-elevation spruce-fir forests; Cucullia postera forewing with a red-orange costal band, a black comma-shaped subanal spot and more distinct discal spots, occurs in high-elevation spruce-fir forests; Cucullia similaris forewing is gray, discal spots outlined with small black dots, occurs in juniper-pine forests; Dolichocucullia dentilinea (Noctuidae) forewing with thin jagged basal and postmedian lines, common in coastal forests.