Size: 1.5 - 2.0 inches wingspan

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Key ID features:  Extremely variable and challenging to ID with certainty.  Above, white with black, brown or charcoal checks, bars or chevrons. Below yellow-veined with brown or olive chevron marks.

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Similar species:  Western white has darker and more extensive or continuous black or gray markings  on forewing tip above, and greener markings  below, especially along veins.

 

Host plant: A wide variety of both weedy and native cruciferous species.

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Habitat: Arid habitats, both disturbed and undisturbed.

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Range: Primarily in southeast Oregon and west of Cascade Mtns, with scattered records in the Willamette Valley and Coast Range.

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Season: Earl June to late September

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Abundance: Uncommon in Oregon

 

Conservation Status: Secure