Eyed Brown (Lethe eurydice) is in the Brush-footed Butterflies family (Nymphalidae). Across the U.S., iNaturalist users have logged 2,066 research-grade observations of it in our sample, peaking in July.
Seasonal pattern in the national data: seasonal. Counts also reflect when people are out photographing, so compare months within a state rather than across states.
When to photograph Eyed Brown: observations by month (U.S.)
About Eyed Brown
Satyrodes eurydice, the eyed brown or marsh eyed brown, is a species of Satyrinae butterfly that is native to North America.From Wikipedia via iNaturalist — article, CC BY-SA.
Eyed Brown by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Vermont | 320 | July | Jul–Jul |
| Wisconsin | 263 | July | Jul–Jul |
| Michigan | 241 | July | Jun–Jul |
| Minnesota | 216 | July | Jun–Jul |
| New Hampshire | 207 | July | Jul–Jul |
| New York | 206 | July | Jun–Jul |
| Ohio | 199 | June | Jun–Aug |
| Maine | 176 | July | Jul–Jul |
| Illinois | 62 | July | Jul–Jul |
| Pennsylvania | 43 | July | Jul–Jul |
| Connecticut | 42 | June | Jun–Jul |
| Massachusetts | 29 | July | Jun–Jul |
| North Dakota | 22 | July | Jul–Jul |
| Nebraska | 14 | July | Jul–Jul |
| New Jersey | 8 | July | Jul–Jul |
| South Dakota | 8 | July | Jun–Jul |
| Indiana | 6 | June | Jun–Jun |
Main season = months with at least 30% of the state's peak-month count.
Related butterflies (Brush-footed Butterflies)
Monarch
Gulf Fritillary
Common Buckeye
Red Admiral
Pearl Crescent
Painted Lady
American Lady
Variegated Fritillary
Photography tips
- Butterflies are sluggish on cool mornings — the best time for close approaches.
- Keep the sensor parallel to the wings for edge-to-edge sharpness.
- Nectar plants in bloom are reliable places to wait.
FAQ
When is the best time to photograph Eyed Brown?
Nationally, July has the most observations, with the main season from June to July.
Where is Eyed Brown most often seen?
The most observations come from Vermont, Wisconsin, Michigan.