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A close-up photo of a live Uncas Skipper butterfly

Millican Flats, Deschutes Co, June 24


Hesperia uncas

Size: Up to 1.4 inch wingspan

Key ID features: Above, male brownish orange darker wingtips with light orange spots.  Above female brown with jagged row of light orange spots. Below dark greenish gray with lighter veins, and disjointed white bands joined by thin vein lines.

Similar species: Sandhill Skipper has light veins below but they are tan or yellowish. Nevada Skipper lacks light veins, and has the lowest segment of the outer spot band strongly offset on HW below.

Host plant: Grass species. Indian ricegrass (Achnatherum hymenoides) is suspected in Oregon.

Habitat: Sage-steppe, hot dry plains, alkali basins, arid canyons. 

Range:  Far southeast corner of Harney and Malheur counties, alkali and sage flats in southern Crook and northern Jefferson counties.

Season: Late May to late June

Abundance: Uncommon 


Conservation Status: Secure 

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