About Lethe eurydice appalachia Chermock, 1947
Satyrodes eurydice, commonly known as the eyed brown or marsh eyed brown, is a species of Satyrinae butterfly native to North America. This species has two recognized subspecies: the nominate subspecies S. e. eurydice, and the smokey eyed brown S. e. fumosa, first described by Leussler in 1916. The wingspan of this butterfly ranges from 38 to 48 mm. It produces one brood per year, with a flight period that runs from late June through August. The larvae of Satyrodes eurydice feed on sedges of the genus Carex, specifically feeding on C. lacustris, C. atherodes, C. rostrata, and C. stricta.