Cercyonis oetus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Nymphalidae
Genus:	Cercyonis
Species:	C. oetus
Binomial name
Cercyonis oetus (Boisduval, 1869)
Synonyms
Satyrus oetus

Cercyonis oetus, the small wood-nymph or dark wood-nymph, is a butterfly of the family Nymphalidae. It is found in western North America.^[1]

The wingspan is 32–45 mm. Adults are on wing from June to August in one generation.

The larvae feed on various grasses.

There are four recognized subspecies:

• Cercyonis oetus oetus
• Cercyonis oetus charon (Edwards, 1872)
• Cercyonis oetus silvestris (Edwards, 1861)
• Cercyonis oetus pallescens T. & J. Emmel, 1971

• Small Wood Nymph, Butterflies and Moths of North America
• Small Wood-Nymph, Butterflies of Canada