© 2018-19 by Neil Henning Björklund

Baldy Cr Rd, Jackson Co, June 28 - male

Propertius

Duskywing

Erynnis propertius

Size: Up to 1.75 inch wingspan

Key ID features: Our largest duskywing. Above, FW gray-brown with frosted bands and spots, 3-6 hyaline (glassy, translucent) spots on FW. FW often appears banded, especially in females. HW plainer gray-brown sometimes with vague light spots.  Below brown with light spots and hyaline spots on FW, few to no small vague spots on HW.

Similar species: Other duskywings are smaller, and generally less boldy marked.

Host plant: Oak species, especially Oregon White Oak (Quercus garryana), and golden chinkapin (Chrysolepis chrysophylla) at higher elevations.

Habitat: Open areas near oaks or chinkapin. 

Range:  Western Oregon from Cascade Crest to crest of Coast Range.

Season: Late March to mid-July

Abundance: Common 

 

Conservation Status: Secure