Northern Prairie Wildlife Research Center

Atlas of North Dakota Butterflies

Alfalfa Butterfly (Colias eurytheme)

  • BND: Alfalfa Butterfly; Colias eurytheme Boisduval, 1852
  • BNA: Orange Sulphur; Colias eurytheme
  • NDC: COEU
  • Habitat: Common in agricultural areas, though less so than C. philodice
  • Larval food: Legumes, esp. Medicago, also Melilotus
  • Adult flight: Multiple broods, May-September
  • References: Royer 76, Opler & Krizek 65, Scott 196
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