Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Small Wood-Nymph
Cercyonis oetus (Boisduval, 1869)


Family: Nymphalidae
Subfamily: Satyrinae
Identification: Wings are light to very dark brown; wing fringes are checkered. Upperside of forewing usually has 1 eyespot in the male, 2 eyespots in the female; upper eyespot is larger. Underside of forewing of both sexes has lower eyespot smaller and nearer to the wing edge than the upper eyespot.
Wing Span: 1 1/4 - 1 3/4 inches (3.2 - 4.5 cm).
Life History: Males patrol all day for females, who deposit eggs singly on the host plant. First-stage caterpillars hibernate unfed until the following spring.
Flight: One brood from June-August.
Caterpillar Hosts: Unknown grasses.
Adult Food: Flower nectar.
Habitat: Dry chaparral, sagebrush, grasslands, scrub, open woodland, meadows.
Range: British Columbia east to southern Saskatchewan and western North Dakota; south to eastern California, Nevada, central Arizona, and New Mexico.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL

National Moth Week was July 23-31, 2022!

Moths are amazing creatures. Take photographs and share your moth sightings with us to document the moths where you live. Learn more.