Regional Morphology
This is relevant for Vipers in Indian Subcontinent and Southeast Asia.
Morphological identification key
| Viperinae | ||||||
| Where did the accident occur?
b) elsewhere in this region |
a | Striking markings consisting of oval blotches, conspicuously large nostrils?
|
yes | Daboia russelli ssp. | ||
| no | Go to Vipers: North Africa, Near and Middle East | |||||
| b | ||||||
| Are there at least 3 (up to 9) large shields on the top of the head?
|
yes | Azemiops feae | ||||
| no | ||||||
| Striking markings consisting of oval blotches, conspicuously large nostrils?
|
yes | Daboia russelli ssp. | ||||
| no | ||||||
| Do the lateral scales have saw-like serrated keels?
|
yes | Echis carinatus | ||||
| no | Macrovipera lebetina |