About Speyeria egleis (Behr, 1862)
Speyeria egleis, commonly known as the Great Basin fritillary or egleis fritillary, is a butterfly species belonging to the family Nymphalidae. This butterfly is found in the United States, with confirmed records ranging from North Dakota southwest through Oregon to California, and extending south to Colorado. Its typical habitat includes mountain meadows, forest openings, and exposed rocky ridges. The wingspan of Speyeria egleis measures 45–60 mm. Its wings are colored from bright to dull orange brown and feature dark markings. Adult butterflies are active in flight from late June to August. The larvae of this species feed on the leaves of various Viola species, specifically V. adunca, V. nuttallii, V. purpurea, and V. walteri.
