| Crotalus adamanteus |
Crotalus adamanteus |
Eastern Diamondback Rattlesnake |
| Crotalus aquilus |
Crotalus aquilus |
Queretaran Blotched Rattlesnake |
| Crotalus atrox |
Crotalus atrox |
Western Diamondback Rattlesnake |
|
Crotalus basiliscus |
Crotalus basiliscus |
Mexican West-Coast Rattlesnake |
| Crotalus catalinensis |
Crotalus catalinensis |
Santa Catalina Island Rattlesnake |
|
Crotalus cerastes |
Crotalus cerastes cerastes |
Mojave Desert Sidewinder |
| Crotalus
cerastes cercobombus |
Sonoran Desert Sidewinder |
|
Crotalus cerastes laterorepens |
Colorado Desert Sidewinder |
|
Crotalus durissus
|
Crotalus durissus cascavella |
NE Brazilian Rattlesnake |
| Crotalus durissus collilineatus |
Central Brazilian Rattlesnake |
| Crotalus durissus culminatus |
NW Neotropical Rattlesnake |
| Crotalus durissus cumanensis |
Venezuelan Rattlesnake |
| Crotalus durissus durissus* |
Neotropical Rattlesnake |
| Crotalus durissus marajoensis |
Marajoan Rattlesnake |
| Crotalus durissus ruruima |
Nuevo Leon Neotropical Rattlesnake |
| Crotalus durissus terrificus |
South Arerican Rattlesnake |
| Crotalus durissus totonacus |
Totonacan Rattlesnake |
|
Crotalus durissus tzabcan |
Yucatan Neotropical Rattlesnake |
|
Crotalus enyo |
Crotalus enyo cerralvensis |
Cerralvo Island Rattlesnake |
| Crotalus enyo furvus |
Rosario Rattlesnake |
|
Crotalus enyo enyo |
Baja California Rattlesnake |
|
Crotalus horridus |
Crotalus horridus atricaudatus** |
Canebrake Rattlesnake |
|
Crotalus horridus horridus |
Timber Rattlesnake |
|
Crotalus intermedius |
Crotalus intermedius intermedius |
Oaxacan Small-headed Rattlesnake |
| Crotalus intermedius gloydi |
Totalcan Small-headed Rattlesnake |
|
Crotalus intermedius omiltemanus |
Omilteman Small-headed Rattlesnake |
| Crotalus lannomi |
Crotalus lannomi |
Autlan Rattlesnake |
Crotalus lepidus |
Crotalus lepidus klauberi |
Banded Rock Rattlesnake |
| Crotalus lepidus lepidus |
Mottled Rock Rattlesnake |
| Crotalus lepidus maculosus |
Durango Rock Rattlesnake |
|
Crotalus lepidus morulus |
Tamaulipan Rock Rattlesnake |
Crotalus mitchelli |
Crotalus mitchellii angelensis |
Angel Island Speckled Rattlesnake |
| Crotalus mitchellii mitchellii |
San Lucan Speckled Rattlesnake |
| Crotalus mitchellii muertensis |
El Muerto Island Speckled Rattlesnake |
| Crotalus mitchellii pyrrhus |
Southwestern Speckled Rattlesnake |
|
Crotalus mitchellii stephensi |
Panamint Speckled Rattlesnake |
Crotalus molossus |
Crotalus molossus estebanensis |
San Esteban Blacktail Rattlesnake |
| Crotalus molossus molossus |
Northern Blacktail Rattlesnake |
| Crotalus molossus nigrescens |
Mexican Blacktail Rattlesnake |
|
Crotalus molossus oaxacus |
Oaxacan Blacktailed Rattlesnake |
Crotalus oreganus
|
Crotalus oreganus abyssus |
Grand Canyon Rattlesnake |
| Crotalus oreganus caliginis |
Coronado Island Rattlesnake |
| Crotalus oreganus cerberus |
Arizona Black Rattlesnake |
| Crotalus oreganus concolor |
Midget Faded Rattlesnake |
| Crotalus oreganus helleri |
Southern Pacific Rattlesnake |
| Crotalus oreganus lutosus |
Great Basin Rattlesnake |
|
Crotalus oreganus oreganus |
Northern Pacific Rattlesnake |
| Crotalus polystictus |
Crotalus polystictus |
Lancehead Rattlesnake |
|
Crotalus pricei |
Crotalus pricei pricei |
Western Twin-spotted Rattlesnake |
|
Crotalus pricei miquihuanus |
Eastern Twin-spotted Rattlesnake |
| Crotalus pusillus |
Crotalus pusillus |
Tancitaran Dusky Rattlesnake |
|
Crotalus ruber |
Crotalus ruber ruber |
Red Diamond Rattlesnake |
| Crotalus ruber elegans |
|
| Crotalus ruber lorenzoensis |
San Lorenzo Island Diamondback |
| Crotalus ruber lucasensis |
San Lucan Island Diamondback |
|
Crotalus ruber monserratensis |
|
|
Crotalus scutulatus |
Crotalus scutulatus salvini |
Humantlan Rattlesnake |
|
Crotalus scutulatus scutulatus |
Mojave Rattlesnake |
| Crotalus Simus |
Crotalus simus simus* |
Central American Rattlesnake |
| Crotalus stejnegeri |
Crotalus stejnegeri |
Long-tailed Rattlesnake |
| Crotalus tancitarensis |
Crotalus tancitarensis |
New Montain Rattlesnake |
| Crotalus tigris |
Crotalus tigris |
Tiger Rattlesnake |
| Crotalus tortugensis |
Crotalus tortugensis |
Tortuga Island Diamondback |
| Crotalus transversus |
Crotalus transversus |
Cross-banded Mountain Rattlesnake |
|
Crotalus triseriatus |
Crotalus triseriatus triseriatus |
Mexican Dusky Rattlesnake |
| Crotalus triseriatus aquilus |
Now Crotalus aquilis |
| Crotalus triseriatus armstrongi |
Central Plateau Dusky Rattlesnake |
| Crotalus unicolor |
Crotalus unicolor |
Aruba Island Rattlesnake |
| Crotalus vegrandis |
Crotalus vegrandis |
Uracoan Rattlesnake |
|
Crotalus viridis |
Crotalus viridis nuntius |
Hopi Rattlesnake |
|
Crotalus viridis viridis |
Prarie Rattlesnake |
| Crotalus willardi |
Crotalus willardi amabilis |
Del NidoRidgenose Rattlesnake |
| Crotalus willardi meridionalis |
Southern Ridgenose Rattlesnake |
| Crotalus willardi obscurus |
New Mexico Ridgenose Rattlesnake |
| Crotalus willardi silus |
Chihuahuan Ridgenose Rattlesnake |
|
Crotalus willardi willardi |
Arizona Ridgenose Rattlesnake |
Changes made recently |
|
|
* Crotalus durissus durissus
Crotalus durissus dryanus |
Crotalus simus simus
Crotalus durissus
durissus |
dryanus was eliminated |
**Crotalus horridus atriculadus
|
Crotalus horridus horridus
|
Canebrakes are timbers as
well
|
