Western tailed-blue
| Western tailed-blue | |
|---|---|
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| Mating pair | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Lepidoptera |
| Family: | Lycaenidae |
| Genus: | Cupido |
| Species: | C. amyntulaCupido amyntula'' |
| Binomial name | |
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Cupido amyntulaCupido amyntula'' Boisduval, 1852 |
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The western tailed-blue (Cupido amyntula) is a member of the family Lycaenidae and is seen across western North America as far north as Alaska. The upperside of the male butterfly is blue while the female has a darker brown band on the outer side of the wing. The underside is riddled with black spots, with a wingspan of 2.2 to 2.9 cm. The larvae feed on Thermopsis, Astragalus, Oxytropis, Vicia, and Lathyrus species.
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