Gloydius is a genus of pit vipers endemic to Asia, also known as Asian moccasins or Asian ground pit vipers. Named after American herpetologist Howard K. Gloyd, this genus is very similar to the North American genus Agkistrodon. 24 species are currently recognized.
Trimeresurus albolabris, the white-lipped pit viper or white-lipped tree viper, is a venomous pit viper species endemic to Southeast Asia.
Trimeresurus stejnegeri is a species of venomous pit viper endemic to Asia. Two subspecies are currently recognized, including the nominate subspecies described here.
Protobothrops sieversorum, commonly known as the three horned-scaled pit viper or the three-horn-scaled pit viper, is a species of pit viper in the family Viperidae. The species is endemic to Vietnam and Laos.
Protobothrops mangshanensis, commonly known as the Mangshan pit viper, Mt. Mang pit viper, or Mang Mountain pit viper, is a pit viper species endemic to Hunan and Guangdong provinces in China. No subspecies are currently recognized. This is a nocturnal pit viper that is also known as the ''Mangshan iron-head snake'', ''Chinese pit viper'', and the ''Ironhead viper''. They eat frogs, birds, insects, and small mammals. They have a white tail tip that they wiggle to mimic a grub so that prey comes into striking range—a behaviour known as caudal luring. The venom causes blood clotting and corrodes muscle tissue and can be fatal to humans if not treated. Unusually for vipers, P. mangshanensis is oviparous with the female laying clutches of 13–21 eggs which she will guard until they hatch.
Protobothrops kaulbacki, commonly known as Kaulback's lance-headed pit viper or Kaulback's lance-headed pit viper, is a pit viper species endemic to Asia. There are no subspecies that are recognized as being valid.
Gloydius intermedius, or Central Asian pit viper, is a venomous species of pitviper endemic to northern Asia.
Gloydius strauchi is a species of venomous pit viper in the subfamily Crotalinae of the family Viperidae. The species is native to western China. It is a small snake with a pattern of four longitudinal stripes, although some older specimens may be a uniform black. G. strauchi may be distinguished from G. monticola by its higher midbody dorsal scale count. This species jointly holds the altitude record for pitvipers together with Crotalus triseriatus of Mexico, both being found even above the tree line at over 4,000 m (13,000 ft). No subspecies were recognized as being valid, until a recent publication re-evaluated the taxonomic statuses of populations of G. strauchi and described the eastern Tibetan populations as a new species.
Diploderma vela, also known as sail mountain lizard, the mountain dragon or sail japalura, is a species of lizard endemic to China. It is named after its distinct sail, with 'Vela' in Latin meaning sail. It can be found in Tibet and Yunnan at elevations of 2370 meters.
Trimeresurus yingjiangensis, also known as Yingjiang green pitviper, is a species of pit viper. It is endemic to Yunnan in southwest China. It is named after its type locality, Yingjiang County.
Trimeresurus sichuanensis is a species of pit viper found in Sichuan, China.
Gloydius lateralis is a species of venomous pit viper found in the Zharu Valley of Jiuzhaigou County, China. The species is active during sunny days in hot and dry areas along roadsides. The Zharu Valley is the sole known location of G. lateralis. This snake is assumed to eat small mammals like mice, based on the fur remnants found within its droppings. This species lineage is a sister taxon to G. swild, being morphologically and phylogenetically similar.
Gloydius chambensis, the Chamba pitviper, is a species of venomous snake belonging to the family Viperidae and the subfamily Crotalinae, the pit vipers. It was described in 2022 from the Chamba District of Himachal Pradesh in the southern Himalayas of northern India. It was identified as a separate species from Gloydius himalayanus by genetic differences and by differences in the counts of scales in some tracts.
Gloydius changdaoensis is a species of Asian moccasin from Shandong Province, China. The name changdaoensis comes from the area it was first discovered in, Changdao County. As with all pit vipers, it is venomous. It has been named as one of the 30 most endangered viper species in 2016.
Gloydius cognatus, or the Alashan pitviper, is a species of Asian moccasin from North West China and Mongolia. As with all pit vipers it is venomous, and it is considered the most toxic species of Gloydius in China.
Gloydius halys boehmei, or the Böhme's pitviper, is a subspecies of Halys pitviper from Eastern Afghanistan. As with all pit vipers, it is venomous.
Gloydius halysmogoi, or the Siberian Pitviper, is a subspecies of Halys pitviper from Mongolia and Siberia. As with all pit vipers, it is venomous.
Gloydius huangi, the Lancang Plateau viper, is a species of Asian moccasin from Tibet. Taxonomically it is named after Dr. Song Huang, a herpetologist from Huangshan University, and the suggested common name is after the name of the river basin it is found in, in hopes of promoting its conservation. As with all pit vipers, it is venomous. It is most closely related to G. monticola.
Gloydius lipipengi, the Nujiang pit viper, is a species of Asian moccasin from China. Taxonomically it is named after Prof. Pi-Peng Li, a herpetologist from Shenyang Normal University. As with all pit vipers, it is venomous. It is most closely related to G. rubromaculatus.
