Colias occidentalis, the western sulphur or golden sulphur, is a butterfly in the family Pieridae found in North America. Its range includes the Pacific Northwest and parts of British Columbia.
Subspecies
Listed alphabetically. • C. o. chrysomelas H. Edwards, 1877 (California, Oregon) • C. o. occidentalis (British Columbia, Washington, Oregon) • C. o. sullivani Hammond & McCorkle, 2003 (Oregon) ==References==