Lycaena gorgon, the Gorgon Copper, can be found in CA,OR, NV, and WY.
Favorite nectar plants include: Achillea, Apocynum, and Eriogonum fasciculatum
USDA Growing Zones for these plants include: 3,4,5,6,7,8,9,10,11

Host plants:
Eriogonum
Rumex

CC0 images courtesy of
Alan Schmierer