Trimeresurus medoensis

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Trimeresurus medoensis
Medog Pit Viper.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Viperidae
Subfamily: Crotalinae
Genus: Trimeresurus
Species: T. medoensis
Binomial name
Trimeresurus medoensis
Zhao, 1977
  • Trimeresurus medoensis Zhao, 1977[2]
  • Viridovipera medoensis
    – Malhotra & Thorpe, 2004
  • Trimeresurus (Viridovipera) medoensis – David et al., 2011[3]
Common names: Motuo bamboo pitviper.[4]

Trimeresurus medoensis is a venomous pitviper species endemic to India, Burma, and China. No subspecies are currently recognized.[5]


Maximum total length for males is 671 mm (26.4 in); for females, 650 mm (26 in). Maximum tail length for males is 125 mm (4.9 in); for females, 115 mm (4.5 in).[6]

The hemipenes are short, thick, and spinose.[6]

Scalation: dorsal scales in 17 longitudinal rows at midbody, of which rows 7-11 are slightly keeled. There are 8 upper labials, of which the first are separated from the nasal scales by a distinct suture. The ventrals number less than 150.[6]

Color pattern: green or bluish green above, yellowish white below, the two separated by a bright bicolored red (below) and white (above) ventrolateral stripe (in both males and females), which occupies the whole of the outermost scale row and a portion of the second row.[6]

Geographic range[edit]

Found in northern India, and also in the Namdapha Valley in southern India; northern Burma (Myanmar); and southeastern Xizang (Tibet), China. The type locality listed is "near A-ni Bridge, Medo Xian, Xizang [Tibet], alt. 1,200 m [3,900 ft]" [Autonomous Region, China].[2]

See also[edit]


  1. ^ Zhou, Z. & Rao, D.-q. (2012). "Viridovipera medoensis". IUCN Red List of Threatened Species. Version 2012.2. International Union for Conservation of Nature. Retrieved 13 March 2013. 
  2. ^ a b McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
  3. ^ The Reptile Database.
  4. ^ Gumprecht A, Tillack F, Orlov NL, Captain A, Ryabov S. 2004. Asian Pitvipers. Geitje Books. Berlin. 1st Edition. 368 pp. ISBN 3-937975-00-4.
  5. ^ "Trimeresurus medoensis". Integrated Taxonomic Information System. Retrieved 25 May 2007. 
  6. ^ a b c d Leviton AE, Wogan GOU, Koo MS, Zug GR, Lucas RS, Vindum JV. 2003. The Dangerously Venomous Snakes of Burma, Illustrated Checklist with Keys. Proc. Cal. Acad. Sci. 54 (24): 407-462.

Further reading[edit]

  • David, Patrick; and Tong, Haiyan. 1997. Translations of Recent Descriptions of Chinese Pitvipers of the Trimeresurus-Complex (Serpentes, Viperidae), with a Key to the Complex in China and Adjacent Areas. Smithsonian Herpetological Information Service (112): 1-31.
  • David, Patrick; Ashok Captain; and Bharat B. Bhatt. 2002 [2001]. On the occurrence of Trimeresurus medoensis Djao in: Djao & Jaing, 1977 (Serpentes, Viperidae, Crotalinae) in India, with a redescription of the species and notes on its biology. Hamadryad 26 (2): 210-226.
  • Djao, Er-mie; and Jiang, Yao-ming. 1977. A survey of reptiles in Xizang Autonomous Region, with faunal analysis and descriptions of new forms. Acta Zoologica Sinica 23: 64-67.

External links[edit]