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Atlas of North Dakota Butterflies

Compton Tortoise Shell (Nymphalis vaualbum)

  • BND: Compton Tortoise Shell; Nymphalis vaualbum ([Denis & Schiffermüller], 1775)
  • BNA: Compton Tortoiseshell; Nymphalis vaualbum
  • Habitat: Mature forests; adults drink sap and rotting fruit juices
  • Larval food: Populus, Betula, Salix spp.
  • Adult flight: Overwinters as adult, appearing April-May to produce a single annual brood by early July. The species is episodic and somewhat migratory, being rare for several years, then suddenly common.
  • References: Royer 144, Layberry et al. 202, Opler & Krizek 155, Scott 290
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JPG -- species photo

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