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 |
See also separate
distribution charts for various Colubrids
of lesser medical importance.
Distribution tables
Agkistrodon bilineatus
Mexico and Central America
| Mexico (without Baja California) | W+SW+S | S Sonora, Sinaloa, Nayarit, Jalisco, Morelos, Colima, Michoacan, Guerrero, Oaxaca, Chiapas, Puebla, Las Islas Marias |
| Guatemala | C+S | |
| Honduras | W | |
| El Salvador | X |
Agkistrodon contortrix
Mexico and Central America
| Mexico (without Baja California) | N | NE Chihuahua, N Coahuila |
Agkistrodon howardgloydi
Mexico and Central America
| Honduras | S | |
| Nicaragua | W+S | |
| Costa Rica | W |
Agkistrodon russeolus
Mexico and Central America
| Mexico (without Baja California) | SE | Yucatan, Campeche, Quintana Roo |
| Guatemala | N | |
| Belize | N |
Agkistrodon taylori
Mexico and Central America
| Mexico (without Baja California) | NE | Tamaulipas, Nuevo Leon, San Luis Potosi, Hildago, N Veracruz |