Size: 1.5 - 2.0 inches wingspan
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.
Similar species: Western white has darker and more continuous black markings on forewing above, and greener markings below, especially along veins.
Host plant: A wide variety of both weedy and native cruciferous species.
Habitat: Arid habitats, both disturbed and undisturbed.
Range: Primarily in southeast Oregon, west of Cascade Mtns, with scattered records of strays in the Willamette Valley and Coast Range.
Season: Earl June to late September
Abundance: Uncommon in Oregon
Conservation Status: Secure