Bug FAQEyed Brown
Lethe eurydice · Order: Lepidoptera · Family: Nymphalidae
The eyed brown butterfly has a wingspan of about 38 to 48 mm. It is a North American satyrine whose larvae feed on various sedges such as Carex lacustris and C. stricta. Adults appear in one generation each year, flying from late June through August.
Source: Wikipedia
Size
Its wingspan ranges from 38 to 48 mm.
Source: Wikipedia
Life cycle
There is one brood per year, with adults on the wing from late June to August.
Source: Wikipedia
When you see it
Their flight period is late June through August.
Source: Wikipedia
Where it comes from
The species is native to North America.
Source: Wikipedia
Lookalikes
Similar species include the Appalachian brown (Lethe appalachia) and the northern pearly-eye (Lethe anthedon).
Source: Wikipedia
Where it is found in the US
Recorded in 42 of 51 states and DC. Most records: Illinois, Vermont, Ohio, Michigan, New York, Virginia, Massachusetts, New Hampshire.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
Same family (Nymphalidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Lethe_eurydice
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.