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Northern Prairie Wildlife Research Center

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Atlas of North Dakota Butterflies

Western Tailed Blue (Everes amyntula)

  • BND: Western Tailed Blue; Everes amyntula (Boisduval, 1852)
  • BNA: Western Tailed-Blue; Everes amyntula
  • NDC: EVAM
  • Habitat: Humid, wooded areas with legumes, western ND
  • Larval food: Many legumes, incl. Astragalus, Oxytropis, Trifolium
  • Adult flight: Two broods, June and August (usually a smaller 2nd brood)
  • References: Royer 103, Ferris & Brown 219, Scott 396
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