Regional Morphology
This is relevant for Pit Vipers in The Far East.
Morphological identification key
| Crotalinae | ||||
| Scales on the top of the head consist of:
a) several large scales |
b) numerous small scales |
b
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| a
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| Is there a distinctive, upturned "horn" on the tip of the snout? | yes | Deinagkistrodon acutus | ||
| no | Gloydius sp.
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