Trimeresurus albolabris septentrionalis

Trimeresurus albolabris septentrionalis
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Subphylum:	Vertebrata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Family:	Viperidae
Subfamily:	Crotalinae
Genus:	Trimeresurus
Species:	T. albolabris
Subspecies:	T. a. septentrionalis
Trinomial name
Trimeresurus albolabris septentrionalis Kramer, 1977
Synonyms
Trimeresurus albolabris septentrionalis - Kramer, 1977[1]

Common names: northern white-lipped pitviper.^[2]

Trimeresurus septentrionalis is a venomous pitviper subspecies found in Nepal and India.^[3]

Description

Total length males 610 mm, females 730 mm.^[4]

The head scalation consists of 10-11(12) upper labials, the first of which are fused to the nasal. The head scales are small, subequal and feebly imbricate, smooth or weakly keeled. The supraoculars are narrow and undivided with 9-11 interocular scales between them. The temporal scales are smooth.^[4]

Midbody there are 21 longitudinal scale rows. There are 1162-172 ventrals in males, 160-181 in females. The subcaudals are paired and number 68-83 in males, 55-71 in females. The hemipenes are without spines.^[4]

The colour pattern is green above. The belly is green, yellowish or white below. A faint ventrolateral stripe present in all males, but absent in females. The end of tail not mottled brown.^[4]

Holotype: MHNG 1404.31^[4]

Geographic range

Nepal and northwestern India (Simla).^[3] The type locality is given as "Nepal 83^o 55' 28^o 15' 1500 m (Nähe Pokhara)." Rgenass & Kramer (1981) list the type locality as "Hyangcha (Nepal) 83^o 55' E.L. 28^o 15' N.B. 1500 m." Holotype: MHNG 1404.31.^[1]

Taxonomy

Elevated to a species, T. septentrionalis, by Giannasi et al. (2001).^[5]

See also

• List of crotaline species and subspecies
• Trimeresurus by common name
• Trimeresurus by taxonomic synonyms
• Crotalinae by common name
• Crotalinae by taxonomic synonyms
• Snakebite

References

1. ^ ^{a b} McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1. Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
2. ^ Gumprecht A, Tillack F, Orlov NL, Captain A, Ryabov S. 2004. Asian Pitvipers. GeitjeBooks Berlin. 1st Edition. 368 pp. ISBN 3-937975-00-4.
3. ^ ^{a b} Leviton AE, Wogan GOU, Koo MS, Zug GR, Lucas RS, Vindum JV. 2003. The Dangerously Venomous Snakes of Myanmar, Illustrated Checklist with Keys. Proc. Cal. Acad. Sci. 54 (24):407-462. PDF at Smithsonian National Museum of Natural History, Division of Amphibians and Reptiles. Accessed 8 August 2006.
4. ^ ^{a b c d e} Cryptelytrops septentrionalis at the Reptarium.cz Reptile Database
5. ^ Giannasi N, Thorpe RS, Malhotra A. 2001. The use of amplified fragment length polymorphism in determining species trees at fine taxonomic levels: analysis of a medically important snake, Trimeresurus albolabris. Molecular Ecology 10:419-426. PDF at Homepage of Professor Roger Stephen Thorpe, University of Wales, Bangor. Accessed 8 August 2006.

Further reading

• Einfalt P. 2002. Haltung und Vermehrung von Trimeresurus albolabris (Gray 1842). Elaphe 10 (4): 31-36.
• Gumprecht A. 2001. Die Bambusottern der Gattung Trimeresurus Lacépède Teil IV: Checkliste der Trimeresurus-Arten Thailands. Sauria 23 (2): 25-32
• Parkinson CL. 1999. Molecular systematics and biogeographical history of Pit Vipers as determined by mitochondrial ribosomal DNA sequences. Copeia 1999 (3): 576-586
• Tu MC, Wang HY, Tsai MP, Toda M, Lee WJ, Zhang FJ, Ota H. 2000. Phylogeny, Taxonomy, and Biogeography of the Oriental Pit Vipers of the Genus Trimeresurus (Reptilia: Viperidae: Crotalinae): A Molecular Perspective. Zoological Science 17: 1147-1157.