Glacier pit viper

Glacier pit viper (Gloydius swild) is a newly identified species of pit viper belonging to genus Gloydius. It is a bluish-grey snake with zigzag stripes on its back and relatively narrow stripes behind the eyes. It is found in eastern part of Qinghai-Tibet Plateau and Hengduanshan mountains, Heishui country, north Sichuan, about 15 km from Dagu Holy-glacier National Geological Park.
Currently, there are more than 20 Gloydius species. They belong to three groups – the Gloydius blomhoffii complex, Gloydius intermedius-halys complex, and Gloydius strauchi complex. The glacier pit viper belongs to the Gloydius strauchi complex.

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