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Great Arctic

Frissell Ridge, Lane Co, July 18


Oeneis nevadensis

Size: Up to 2.5 inch wingspan

Key ID features: Above orangish tan with dark wing margins and black eyespots, one or more on FW, one or none on HW. Male has dark brown wash on inner half of FW.  FW below similar to above, but with gray and black striations along FW leading margin and on wingtip. HW striated with white and brown, dark brown zigzag median lines, and darker band along margin. 

Similar species: None in Oregon.

Host plant: Grasses, but no specific species identified in Oregon.

Habitat: Grassy habitats including wet and dry meadows, roadsides, riparian zones.   

Range: Cascade Range, Siskiyou Mtns, Klamath Mtns, Warner Mtns, Coast Range in Curry County.

Season: Late April to late September

Abundance: Common in even numbered years in most of range. 


Conservation Status: Secure 

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