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 DFW markings and, and bolder yellow-green markings on the VHW, especially along veins. On Western White males, the gray triangles along the FW tip usually are joined to each other, while on Checkered White they are often separate. Pattern of veins on the forewing also differ as seen here. DFW markings in female Checkered Whites are often more extensive and brownish gray.

 

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 east 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