Speyeria zerene, the Zerene Fritillary, can be found in WA,OR,ID,WY,CA,NV,UT,SD, and NE.
Favorite nectar plants include: Apocynum, Cirsium, and Erigeron
USDA Growing Zones for these plants include: 3,4,5,6,7,8,9,10,11

Host plants:
Viola
Viola adunca
Viola cuneata
Viola lobata
Viola nuttallii
Viola psychodes
Viola purpurea