Size: 1.5 - 2.0 inches wingspan
Key ID features: Bright white with black leading margin and tip of forewing. Underside of HW has veins outlined in black. Underside of female hindwing outlined in red-orange. Notably graceful flight pattern.
Similar species: Mustard (margined) white has more delicate dark markings on veins below and lacks heavy black marks above
Host plant: Douglas fir, Ponderosa pine and other pine species.
Habitat: Fir and pine forests, and in some urban areas near pines.
Range: Western Oregon and Ochoco Mtns, Blue Mtns and Wallowa Mtns.
Season: Late June to mid-October
Conservation Status: Secure