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Speyeria hesperis, the northwestern fritillary, is a butterfly of the family Nymphalidae. It is found in the northwestern United States and western Canada, as far east as Manitoba and the Dakotas.[1][2]
With a wingspan of between 45–58 millimetres (1.8–2.3 in), this fritillary is relatively small. It has bright orange uppersides (yellow in females) and thinner black markings than most fritillaries.[1]
Similar species
- Aphrodite fritillary (Speyeria aphrodite)
- Atlantis fritillary (Speyeria atlantis)
References
- ^ a b Northwestern Fritillary, Butterflies of Canada
- ^ Northwestern Fritillary, Butterflies and Moths of North America
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