Size: Up to 3 inch wingspan
Key ID features: Above black with broad white band through FW and HW, prominent orange patches at wingtips. Below bands of red-brown, white and black crossed by black veins.
Similar species: Superficially similar to Weidemeyer's Admiral, which lacks orange wingtips. California Sister is dark brown above, and orange patches on FW are separated from wing tip.
Host plant: Oceanspray (Holodiscus discolor), willow species (Salix), rose family shrubs and others.
Habitat: Can appear in any habitat that contains one of its host plants.
Range: Throughout Oregon.
Season: Mid-February to early October.
Conservation Status: Secure