Lethe eurydice, the eyed brown or marsh eyed brown, is a species of Satyrinae butterfly that is native to North America."Satyrodes Scudder, 1875" at Markku Savela's Lepidoptera and Some Other Life Forms
There are two subspecies—the nominate species, the eyed brown (L. e. eurydice), and the smokey eyed brown (L. e. fumosa) (Leussler, 1916).
Wingspan: 38 to 48 mm.Eyed Brown, Butterflies of Canada
They have one brood with a flight period from late June through August.Eyed Brown, Wisconsin Butterflies
Larvae feed on sedges (Carex) in particular C. lacustris, C. atherodes, C. rostrata, and C. stricta.Pyle, R. M.; National Audubon Society: Field Guide to North American Butterflies; 1981;
Similar species Lethe appalachia (R.L. Chermock, 1947) – Appalachian brown Lethe anthedon (A.H. Clark, 1936) – northern pearly-eye
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