Gloydius halys ubsunurensis, also known as the Ubsunur pit viper or the Ubsunur Mamushi, is a subspecies of Halys pitviper from Mongolia and Russia.

[1][2] As with all pit vipers, it is venomous.

[3] Gloydius halys ubsunurensis is distinguished from its sister subspecies by specific scale counts as well as the many light bands across its body and tail outlined in a darker colouration, its light-brown to grey colouration and its darker underside.

[1] Glydius halys ubsunurensis is known to be viviparous.

[3] This Alethinophidia article is a stub.