Select your current world region and subregion.
Distribution of terrestrial venomous snakes
Selection
| Occurrences in | |
|---|---|
| NW | the Northwest |
| N | the North |
| NE | the Northeast |
| W | the West |
| C | central areas |
| E | the East |
| SW | the Southwest |
| S | the South |
| SE | the Southeast |
| X | most areas |
| ? | unclear |
Distribution tables
Crotalus adamanteus
North America
| Arkansas, Louisiana | SE | Louisiana only |
| North & South Carolina, Georgia, Alabama, Mississippi | E+S | |
| Florida | X |
Crotalus aquilus
Mexico and Central America
Crotalus atrox
North America
| California, Nevada | SE | |
| Arizona | X | |
| New Mexico | X | |
| Nebraska, Kansas, Oklahoma | X | Oklahoma only |
| Texas | X | |
| Arkansas, Louisiana | X | Arkansas only |
Mexico and Central America
Crotalus basiliscus
Mexico and Central America
Crotalus catalinensis
Mexico and Central America
| Baja California (Mexico) | X | Isla Santa Catalina only |
Crotalus cerastes
North America
| California, Nevada | C+SE | |
| Utah, Colorado | SW | Utah only |
| Arizona | W+SW |
Mexico and Central America
Crotalus enyo
Mexico and Central America
Crotalus horridus
North America
Crotalus intermedius
Mexico and Central America
Crotalus lannomi
Mexico and Central America
Crotalus lepidus
North America
| Arizona | SE | |
| New Mexico | SW+SE | |
| Texas | SW |
Mexico and Central America
Crotalus mitchelli
North America
| California, Nevada | C+SE | |
| Arizona | W |
Mexico and Central America
Crotalus molossus
North America
| Arizona | X | |
| New Mexico | X | |
| Texas | C+SW |
Mexico and Central America
Crotalus oreganus
North America
Mexico and Central America
| Baja California (Mexico) | N | also on Isla Santa Catalina and Isla Coronado del Sur |
| Mexico (without Baja California) | N |
Crotalus polystictus
Mexico and Central America
Crotalus pricei
North America
| Arizona | SE |
Mexico and Central America
Crotalus pusillus
Mexico and Central America
Crotalus ravus
Mexico and Central America
Crotalus ruber
North America
| California, Nevada | SW | California only |
Mexico and Central America
| Baja California (Mexico) | X | also on Isla de Santa Margerita and Isla de Cedros |
Crotalus scutulatus
North America
| California, Nevada | C+E | |
| Utah, Colorado | SW | Utah only |
| Arizona | X | |
| New Mexico | S | |
| Texas | SW |
Mexico and Central America
Crotalus simus
Mexico and Central America
| Mexico (without Baja California) | S | |
| Guatemala | X | |
| Belize | X | |
| Honduras | X | |
| El Salvador | X | |
| Nicaragua | W+SW | |
| Costa Rica | NW |
Crotalus stejnegeri
Mexico and Central America
Crotalus tigris
North America
| Arizona | S |
Mexico and Central America
Crotalus tortugensis
Mexico and Central America
| Baja California (Mexico) | X | Ilsa de Tortuga only |
Crotalus totonacus
Mexico and Central America
Crotalus transversus
Mexico and Central America
Crotalus triseriatus
Mexico and Central America
Crotalus viridis
North America
| British Columbia. Alberta, Saskatchewan | S | |
| Washington, Oregon, Idaho, Montana, Wyoming, North & South Dakota | X | |
| Utah, Colorado | X | Colorado only |
| Arizona | E | |
| New Mexico | X | |
| Nebraska, Kansas, Oklahoma | X | |
| Texas | X | |
| Minnesota, Iowa, Missouri | NW | Iowa only |
Mexico and Central America
Crotalus willardi
North America
| Arizona | SE | |
| New Mexico | SW |
Mexico and Central America