Species Detail

Small Wood Nymph

Cercyonis oetus (Boisduval, 1869)

JPG -- species photo

Attributes of Cercyonis oetus


Family: Brush-footed Butterflies (Nymphalidae)

Subfamily: Satyrs and Wood-Nymphs (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.

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.

Wing span: 1 1/4 - 1 3/4 inches (3.2 - 4.5 cm).

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.

NatureServe Global Status: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.

Management needs: None reported.

Documented Records for Cercyonis oetus



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