Gloydius halys mogoi, or the Siberian Pitviper, is a subspecies of Halys pitviper from Mongolia and Siberia.

[2] The status of Gloydius halys mogoi is controversial, with some researchers believing it should be a junior synonym of G. h. halys, while others believe it is a full subspecies.

[3][4][5][6][7] Gloydius halys mogoi can be distinguished from its sister subspecies by its specific scale counts and apical pits visible under a microscope.

[8] Glydius halys mogoi is known to be viviparous.

[2] This Alethinophidia article is a stub.