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Trimeresurus stejnegeri

Species of snake

|Trimeresurus stejnegeri Schmidt, 1925 |Trimeresurus gramineus stejnegeri — Stejneger, 1927 |Trimeresurus gramineus formosensis Maki, 1931 |Trimeresurus gramineus kodairai Maki, 1931 |Trimeresurus stejnegeri stejnegeri — Pope, 1935 |Trimeresurus stejnegeri makii Klemmer, 1963 |Trimeresurus stejnegeri formosensis — Welch, 1988 |Trimeresurus stejnegeri kodairai — Welch, 1988 |Trimeresurus stejnegeri — Cox et al., 1998 |Viridovipera stejnegeri — Malhotra & Thorpe, 2004 |Trimeresurus (Viridovipera) stejnegeri — David et al., 2011

Trimeresurus stejnegeri is a species of venomous pit viper endemic to Asia. Two subspecies are currently recognized, including the nominate subspecies described here.

Common names for this pit viper include Stejneger's pit viper, Chinese pit viper, Chinese green tree viper, bamboo viper, Chinese bamboo pitviper, 69 bamboo viper, and Chinese tree viper. For other common, non-scientific names, see below.

Etymology

The specific name, stejnegeri, is in honor of Leonhard Stejneger, the Norwegian-born, American herpetologist who worked at the Smithsonian Institution for over 60 years.

Description

Trimeresurus stejnegeri grows to a maximum total length of 75 cm, which includes a tail length of 14.5 cm. The males have hemipenes that are short and spinose beyond the bifurcation.

The dorsal scales are arranged in 21 longitudinal rows at midbody. There are 9–11 upper labials, of which the first are separated from nasal scales by a distinct suture. The supraoculars are single, narrow, and sometimes divided by a transverse suture. There are 11–16 scales in a line between the supraoculars. The ventrals number 150–174, and the subcaudals are 54–77. All of the subcaudals are paired.

The color pattern is bright to dark green above, pale green to whitish below, the two separated by a bright bicolored orange or brown (below) and white (above) (males) or bicolored or white only (females) ventrolateral stripe, which occupies the whole of the outermost scale row and a portion of the second row.

Bamboo vipers are carnivores: they eat small rodents, birds, frogs, and lizards.

Yellow colored mutants have been reported.

Common names

Common names for T. stejnegeri include bamboo viper, Chinese tree viper,

Geographic range

Trimeresurus stejnegeri is found in India (Western Ghats & Eastern Ghats, Northeast India) and Nepal through Myanmar and Laos to much of southern China (Yunnan, Sichuan, Gansu, Jiangxi, Jiangsu, Hunan, Hubei, Guizhou, Guangxi, Guangdong, Hainan, Fujian, Anhui, Zhejiang), Vietnam, and Taiwan. The type locality was originally listed as "Shaowu, Fukien Province, China", and later amended to "N.W. Fukien Province" by Pope & Pope (1933) (Fukien being the former romanization of Fujian). this snake is often confused with Trimeresurus, Ahaetulla oxyrhyncha in India.

Habitat

The preferred natural habitat of T. stejnegeri is forest, at altitudes from sea level to 2,000 m.

Venom

Trimeresurus stejnegeri has a potent hemotoxin. The wound usually feels extremely painful, as if it had been branded with a hot iron, and the pain does not subside until about 24 hours after being bitten. Within a few minutes of being bitten, the surrounding flesh dies and turns black, highlighting the puncture wounds. The wound site quickly swells, and the skin and muscle become black due to necrosis. The size of the necrotic area depends on the amount of venom injected and the depth of the bite.

Reproduction

T. stejnegeri is viviparous.

Subspecies

Subspecies	Taxon author	Common name	Geographic range
T. s. chenbihuii	Zhao, 1997	Chen's pit viper	China, Hainan Island: on Mount Diaoluo at 225–290 m elevation (Lingshui County) and on Wuzhi Mountain at 500 m elevation (Qiongzhong County).
T. s. stejnegeri	Schmidt, 1925	Stejneger's pit viper	China (in eastern Sichuan, Guizhou, Hubei, Anhui, Jiangsu, Zhejiang, Jiangxi, Hunan, Fujian, Gansu, Guangdong and Guangxi), Taiwan, and Vietnam.

References

Jiang, J.. (2012). "''Trimeresurus stejnegeri''".
[[:fr:Roy Wallace McDiarmid. McDiarmid RW]], [[Jonathan A. Campbell. Campbell JA]], [[T'Shaka Touré. Touré T]] (1999). ''Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1''. Washington, District of Columbia: Herpetologists' League. 511 pp. {{ISBN. 1-893777-00-6 (series). {{ISBN. 1-893777-01-4 (volume).
U.S. Navy (1991). ''Poisonous Snakes of the World''. New York: US Government / Dover Publications Inc. 203 pp. {{ISBN. 0-486-26629-X.
[[John M. Mehrtens. Mehrtens JM]] (1987). ''Living Snakes of the World in Color''. New York: Sterling Publishers. 480 pp. {{ISBN. 0-8069-6460-X.
Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. {{ISBN. 978-1-4214-0135-5. (''Trimeresurus stejnegeri'', pp. 252-253).
[[Alan Edward Leviton. Leviton AE]], [[Guinevere O. U. Wogan. Wogan GOU]], Koo MS, [[:de:George Robert Zug. Zug GR]], Lucas RS, [[Jens V. Vindum. Vindum JV]] (2003). "The Dangerously Venomous Snakes of Myanmar, Illustrated Checklist with Keys". ''Proceedings of the California Academy of Sciences'' '''54''' (24): 407-462.
(13 February 2023). "Rare mutant yellow Taiwan bamboo pit viper spotted on trail". Taiwan News.
Gumprecht A]], [[Frank Tillack. Tillack F]], [[:fr:Nikolaï Orlov. Orlov NL]], [[Ashok Captain. Captain A]], [[Sergei A. Ryabov. Ryabov S]] (2004). ''Asian Pitvipers''. First Edition. Berlin: Geitje Books. Berlin. 368 pp. {{ISBN. 3-937975-00-4.
{{NRDB species

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