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
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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) |
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| a |
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Where did the accident occur?
b) Thailand, Indochina, Malaysia or Indonesia
c) elsewhere in this region |
a | Hypnale sp. | ||
| b | Calloselasma rhodostoma |
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| c | ||||
| Gloydius himalayanus |
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