Speyeria egleis

Speyeria egleis, commonly known as the Great Basin fritillary or egleis fritillary, is a butterfly of the family Nymphalidae. It is found in the United States, where it has been recorded from North Dakota southwest through Oregon to California and south to Colorado. The habitat consists of mountain meadows, forest openings and exposed rocky ridges.

Great Basin fritillary
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Nymphalidae
Genus:	Speyeria
Species:	S. egleis
Binomial name
Speyeria egleis (Behr, 1862)
Synonyms
Argynnis egleis Behr, 1862 Argynnis egleis Boisduval, 1869 Argynnis montivaga Behr, 1863 Argynnis astarte Edwards, 1864 (preocc. Doubleday, 1847) Argynnis montivaga ab. mammothi Gunder, 1924 Argynnis montivaga tr. f. boharti Gunder, 1929 Argynnis egleis Boisduval, 1869 Argynnis utahensis linda dos Passos & Grey, 1942 Speyeria montiviga secreta dos Passos & Grey, 1945 Argynnis utahensis Skinner, 1919 Argynnis montivaga var. tehachapina J. A. Comstock, 1920 Argynnis oweni Edwards, 1892 Argynnis macdunnoughi Gunder, 1932 Argynnis albrighti Gunder, 1932 Argynnis utahensis linda dos Passos & Grey, 1942

The wingspan is 45–60 mm. The wings are bright to dull orange brown with dark markings. Adults are on wing from late June to August.

The larvae feed on the leaves of Viola species, including V. adunca, V. nuttallii, V. purpurea, and V. walteri.

Subspecies

• S. e. egleis
• S. e. albrighti (Gunder, 1932) (Montana)
• S. e. linda (dos Passos & Grey, 1942) (Idaho)
• S. e. macdunnoughi (Gunder, 1932) (Montana)
• S. e. mattooni J. Emmel & T. Emmel, 1998 (California)
• S. e. moecki Hammond & Dornfeld, 1983 (Oregon)
• S. e. oweni (Edwards, 1892) (California)
• S. e. reidi Austin, 1998 (Nevada)
• S. e. secreta dos Passos & Grey, 1945 (Colorado)
• S. e. tehachapina (Comstock, 1920) (California)
• S. e. toiyabe Howe, 1975 (Nevada)
• S. e. utahensis (Skinner, 1919) (Utah)
• S. e. yolaboli J. Emmel & T. Emmel, 1998 (California)

S. e. atossa and S. e. clemencei are now treated as subspecies of Speyeria adiaste.