Regional Morphology
This is relevant for Vipers in The Far East.
Morphological identification key
| Viperinae | ||||||
| Are there at least 3 (up to 9) large shields on the top of the head?
|
yes | Did the accident occur north of the 35th parallel? | yes | Vipera berus or Vipera renardi | ||
| no | Azemiops feae | |||||
| no | ||||||
| Striking markings consisting of oval blotches, conspicuously large nostrils?
|
yes | Daboia russelli ssp. |