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Atlas of North Dakota Butterflies

Queen Alexandra's Sulphur (Colias alexandra)


  • BND: Queen Alexandra's Sulphur; Colias alexandra W. H. Edwards, 1863
  • BNA: Queen Alexandra's Sulphur; Colias alexandra
  • NDC: COAL
  • Habitat: Badlands; rarely encountered in ND
  • Larval food: Wild legumes, incl. Astragalus, Hedysarum, Thermopsis
  • Adult flight: Phenology unclear, June certainly, possibly also August
  • References: Royer 77, Ferris & Brown 161, Scott 195
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