Select the snake family or subfamily and your current world region. If you don't know the family/subfamily, go to the "Find terrestrial snake by morphology (general)" page and follow the instructions.
Find terrestrial venomous snake by morphology (regional)
Selection
|
Morphological identification key
| Crotalinae | ||||
| Scales on the top of the head consist of: a) several large scales |
b) numerous small scales |
b |
Trimeresurus sp. in the old sense (including the new subgenera/genera): Craspedocephalus, Garthius chaseni,Himalayophis, Ovophis, Parias, Popeia, Protobothrops, Sinovipera, Trimeresurus, Tropidolaemus andViridovipera) |
|
| a |
||||
|
|
||||
|
|
||||
| Is there a distinctive, upturned "horn" on the tip of the snout? | yes | Deinagkistrodon acutus | ||
| no | Gloydius sp. |
|||