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Northern Prairie Wildlife Research Center

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Atlas of North Dakota Butterflies

Edwards' Fritillary (Speyeria edwardsii)

  • BND: Edwards' Fritillary; Speyeria edwardsii (Reakirt, 1866)
  • BNA: Edwards' Fritillary; Speyeria edwardsii
  • Habitat: Native prairies in southwestern ND; nectars avidly at Cirsium
  • Larval food: Viola spp. (larva overwinters in 1st stage)
  • Adult flight: Mid-June into July (earlier than other Speyeria spp.)
  • References: Royer 123, Ferris & Brown 304, Scott 335
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