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Northwestern fritillary
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Nymphalidae
Genus:	Speyeria
Species:	S. hesperis
Binomial name
Speyeria hesperis (W.H. Edwards, 1864)

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.

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.

Similar species

• Aphrodite fritillary (Speyeria aphrodite)
• Atlantis fritillary (Speyeria atlantis)

References

1. ^ Northwestern Fritillary, Butterflies of Canada
2. Northwestern Fritillary, Butterflies and Moths of North America

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• Speyeria
• Butterflies of North America
• Butterflies described in 1864
• Taxa named by William Henry Edwards
• Lepidoptera of the United States
• Lepidoptera of Canada
• Heliconiinae stubs