Occidryas anicia, the Anicia Checkerspot, can be found in WA,OR,ID,WY,SD,CA,NM,UT,NE, and AZ.
Favorite nectar plant: Taraxacum officinale
USDA Growing Zones for this plant include: 3,4,5,6,7,8,9

Host plants:
unknown

CC by-sa 2.0 image courtesy of
dfoaulder