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Northern Prairie Wildlife Research Center

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Atlas of North Dakota Butterflies

Milbert's Tortoise Shell (Aglais milberti)

  • BND: Milbert's Tortoise Shell; Aglais milberti (Godart, 1819)
  • BNA: Milbert's Tortoiseshell; Nymphalis milberti
  • Habitat: Widespread across the state; autumn
  • Larval food: Urtica and Salix spp., also possibly Helianthus
  • Adult flight: Confused; one to four broods reported; probably two in ND
  • References: Royer 147, Layberry et al. 204, Opler & Krizek 157, Scott 289
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