AKA Cecropterus pylades
Size: Up to 2 inch wingspan
Key ID features: Above very dark brown with a few narrow white bars and spots on FW. Bars and spots translucent. Below similar to above, dark brown with with a few narrow tan or off-white bars and spots on FW.
Similar species: Western Cloudywing flies notably faster, perches on rocks, has shorter white sub-cell bar in FW.
Host plant: Many legume species, but often associated with Lotus crassifolius in Oregon.
Habitat: Canyons, clearings and flowery flatlands.
Range: Cascade Range, Eastern Blue Mtns, Wallowa Mtns, Siskiyou Mtns, Klamath Mtns, Warner Mtns.
Season: Late April to mid-July
Conservation Status: Secure