Taxonomy
This genus was previously much larger and also included the following genera:
- Calloselasma - The Malayan pit viper found in Southeast Asia.
- Deinagkistrodon - The Hundred-pace viper found mostly in southern China.
- Gloydius - Moccasins found in Asia.
- Hypnale - Hump-nosed vipers found in India and Sri Lanka.
Read more about this topic: Agkistrodon