Country: California, Nevada
Distribution of Terrestrial Snakes in North America
Pit Vipers
| Crotalus atrox | SE | |
| Crotalus cerastes | C+SE | |
| Crotalus helleri | SW | South Western California |
| Crotalus lutosus | X | only NW California, all over Nevada |
| Crotalus mitchelli | C+SE | |
| Crotalus oreganus | X | |
| Crotalus ruber | SW | California only |
| Crotalus scutulatus | C+E | |
| Crotalus stephensi | X | C&E California and SW Nevada |