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Clouded Sulphur.

Orange Sulphur.

Southern Dogface.

Sleepy Orange.

Dainty Sulphur.

Little Yellow.

Mexican Yellow.

Cloudless Sulphur.

White Angled-Sulphur.

CLOUDED SULPHUR, (Colias philodice)
 Killdeer Mountains Wildlife Management Area, North Dakota

 Slide # I-235-11.5