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Bonny Lakes Trail, Wallow Co, August 2


Colias skinneri

AKA Skinner's Sulphur

Size: 1.25 - 1.5 inches wingspan

Key ID features:  Smallish. Above lemon yellow, with solid dark brown to black borders. Below, HW dusted with black overscaling, giving olive cast. On HW below, discal spot small, thickly-rimmed in rose or reddish brown. Pink wing fringes.

Similar species:  Clouded Sulphurs have double ring around discal spot on HW below. Western Sulphurs greenish on HW below. Pink-edged Sulphurs have more rounded wings, lack black overscaling below and have brighter pink wing borders.


Host plant: Various species of Vaccinium (huckleberry).

Habitat: High forest clearings and moist meadows with Vaccinium.

Range: In Oregon, only found in Wallowa Mtns and on Steens Mtn.

Season: Late June to early-September

Abundance: Uncommon


Conservation Status: Secure

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