Small Wood-Nymph

Cercyonis oetus · Order: Lepidoptera · Family: Nymphalidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Small Wood-Nymph
Photo: Melissa McMasters, CC BY

The small wood-nymph has a wingspan of about 32 to 45 mm. It lives in western North America and the caterpillars feed on various grasses. Adults are on the wing from June through August, producing one generation each year.

Source: Wikipedia

Size

Its wingspan ranges from 32 to 45 mm.

Source: Wikipedia

Where it lives

It is found in western North America.

Source: Wikipedia

What it eats

The larvae feed on a variety of grasses.

Source: Wikipedia

Life cycle

Adults appear from June to August and there is one generation per year.

Source: Wikipedia

When you see it

Adults are on wing during June-August.

Source: Wikipedia

Where it comes from

Its native range is western North America.

Source: Wikipedia

Where it is found in the US

Recorded in 16 of 51 states and DC. Most records: Colorado, Idaho, Wyoming, Montana, New Mexico, Oregon, Utah, California.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Status: native in North America; native in United States; native in Canada. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Questions people ask

How large is the small wood-nymph?

Its wingspan is between 32 and 45 mm.

Source: Wikipedia

When can I see adult small wood-nymphs?

Adults are active from June through August.

Source: Wikipedia

What do the caterpillars eat?

The larvae feed on various grasses.

Source: Wikipedia

Where does the small wood-nymph live?

It is found in western North America.

Source: Wikipedia

Same family (Nymphalidae)

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Cercyonis_oetus

Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.

How this page works

This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.