Trimeresurus macrolepis Contents Geographic range Description Taxonomy Habitat Behavior Diet Venom Reproduction See also References Further reading External links Navigation menu"Trimeresurus macrolepis""A phylogeny of four mitochondrial gene regions suggests a revised taxonomy for Asian pitvipers (Trimeresurus and Ovophis)"10.1016/j.ympev.2004.02.00815186799"On the need to follow rigorously the Rules of the Code for the subsequent designation of a nucleospecies (type species) for a nominal genus which lacked one: the case of the nominal genus Trimeresurus Lacépède, 1804 (Reptilia: Squamata: Viperidae)"Trimeresurus macrolepisReptarium.cz Reptile DatabaseTrimeresurus_macrolepistrimeresurus-macrolepis46145959609213096311026807634921macrolepis

IUCN Red List near threatened speciesTrimeresurusEndemic fauna of the Western GhatsReptiles of IndiaFauna of KeralaFauna of Tamil NaduReptiles described in 1862


commonly knownvenomouspitviperspeciesendemicWestern GhatsSouth IndiasubspeciesWestern GhatsPalakkad GapKeralaTamil NaduNelliyampathyMunnarAnaimalaiPalni hillsMeghamalaiPeriyar Tiger ReserveAgasthyamalaiKalakkad Mundanthurai Tiger Reservetype localityTamil Nadu StateWestern GhatsGüntherarborealnocturnalrainforeststeacoffeecardamomterrestrialarborealprehensile tailbranchesambushcamouflageloreal pitsfrogslizardsbirdsrodentshemotoxinteaoviparouseggs






















Trimeresurus macrolepis

Trimeresurus macrolepis profile.jpg

Conservation status




Near Threatened (IUCN 3.1)[1]


Scientific classification edit
Kingdom:

Animalia
Phylum:

Chordata
Class:

Reptilia
Order:

Squamata
Suborder:

Serpentes
Family:

Viperidae
Genus:

Trimeresurus
Species:

T. macrolepis


Binomial name

Trimeresurus macrolepis
(Beddome, 1862)


Synonyms


  • Trimesurus macrolepis Beddome, 1862


  • Peltopelor macrolepis – Günther, 1864


  • Trigonocephalus macrolepis
    – Ferguson, 1895


  • Lachesis macrolepis – Boulenger, 1896


  • Trimeresurus macrolepis
    – M. A. Smith, 1943[2]


  • Peltopelor macrolepis
    – Malhotra & Thorpe, 2004


  • Trimeresurus (Peltopelor) macrolepis
    – David et al., 2011[3]

Trimeresurus macrolepis, commonly known as the large-scaled pitviper is a venomous pitviper species endemic to the Southern Western Ghats of South India. [4][5] No subspecies are currently recognized.[6]




Tongue flicking




Contents





  • 1 Geographic range


  • 2 Description


  • 3 Taxonomy


  • 4 Habitat


  • 5 Behavior


  • 6 Diet


  • 7 Venom


  • 8 Reproduction


  • 9 See also


  • 10 References


  • 11 Further reading


  • 12 External links




Geographic range


It is found in the mountains of southern Western Ghats south of Palakkad Gap, in the Indian states of Kerala and Tamil Nadu. It is a high-elevation specialist, not normally recorded anywhere below 1200 m asl. Precise records are from Nelliyampathy, Munnar, Anaimalai, Palni hills, Meghamalai, Periyar Tiger Reserve, Agasthyamalai and Kalakkad Mundanthurai Tiger Reserve. [7] at elevations of 1200-2695 m asl.[8] The type locality is listed as "Anamalai hills (Tamil Nadu State, southwestern India)".[2]



Description


Adults may attain a total length of 68 cm (27 in), which includes a tail 12 cm (4.7 in) long.[9]


Dorsally, T. macrolepis is bright green, with blackish skin between the scales in some places. There is a yellow or white stripe on each side of the body, which runs along the first dorsal scale row. The upper lips are pale green, and there may be a black streak behind the eye. Ventrally, it is pale greenish.[8]


The dorsal scales, which are large, keeled, and overlapping, are arranged in only 12-15 rows at midbody. The dorsal scales in the 10 middle rows are always the largest, and additional rows are made up of smaller scales. An even number of dorsal scale rows is frequently found in this species, even though it is uncommon in snakes in general. Ventrals 133-143; subcaudals divided 44-58.[8]


The scales on the top of the head are very large, smooth, and overlapping. There is an elongate subocular, which is separated from the upper labials by a row of a few small scales. There are 7-8 upper labials, of which the 3rd is the largest.[8]



Taxonomy


Trimeresurus macrolepis has a long spineless hemipenis without papillae; the hemipenis has a long calyculate region beginning at some distance from the fork of the hemipenis and continuing until the tip. This is a characteristic similar to vipers of the Trimeresurus popeiorum group. In addition, it has enlarged head scales, somewhat akin to those of Agkistrodon species. Based on these characters, and its Western Ghats distribution, Malhotra and Thorpe (2004) resurrected the genus Peltopelor Günther, 1864 for this species.[10]


The resurrection of new genera from Trimeresurus by Malhotra & Thorpe was accepted by most subsequent authors. However, the creation of the new genera created a problem, in that the new genera did not form a distinct clade, as Trimeresurus had done and also were not distinct morphologically from one another other in the clade. Based on this view, Peltopelor has been reduced by David, Vogel & Dubois (2011) to the status of a subgenus, so that the latest taxonomic classification of this snake is Trimeresurus (Peltopelor) macrolepis.[11]



Habitat


Trimeresurus macrolepis is a slow-moving, arboreal, nocturnal snake that prefers rainforests, and is also found in tea, coffee and cardamom plantations. [7]



Behavior


It is both terrestrial and arboreal, using its prehensile tail to hold onto branches. It is an ambush hunting snake relying on its camouflage to catch prey.[8] The heat-sensing loreal pits are used to locate warm-blooded prey.[12]



Diet


It feeds mainly on frogs, lizards, small birds and rodents.[7]



Venom


Presumed to contain hemotoxin, but not that thoroughly studied. Even though tea pickers are frequently bitten by this species, the bites are seldom fatal.[7]



Reproduction


Trimeresurus macrolepis is oviparous. Sexually mature females lay eggs in October, in clutches of 4-7.[7]




Close up of head



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. ^ http://oldredlist.iucnredlist.org/details/172623/0


  2. ^ ab McDiarmid RW, Campbell JA, Touré T. 1999. Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Herpetologists' League. 511 pp. .mw-parser-output cite.citationfont-style:inherit.mw-parser-output .citation qquotes:"""""""'""'".mw-parser-output .citation .cs1-lock-free abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-limited a,.mw-parser-output .citation .cs1-lock-registration abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .citation .cs1-lock-subscription abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registrationcolor:#555.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration spanborder-bottom:1px dotted;cursor:help.mw-parser-output .cs1-ws-icon abackground:url("//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/12px-Wikisource-logo.svg.png")no-repeat;background-position:right .1em center.mw-parser-output code.cs1-codecolor:inherit;background:inherit;border:inherit;padding:inherit.mw-parser-output .cs1-hidden-errordisplay:none;font-size:100%.mw-parser-output .cs1-visible-errorfont-size:100%.mw-parser-output .cs1-maintdisplay:none;color:#33aa33;margin-left:0.3em.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-formatfont-size:95%.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-leftpadding-left:0.2em.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-rightpadding-right:0.2em
    ISBN 1-893777-00-6 (series).
    ISBN 1-893777-01-4 (volume).



  3. ^ The Reptile Database. www.reptile-database.org.


  4. ^ Mehrtens JM. 1987. Living Snakes of the World in Color. New York: Sterling Publishers. 480 pp.
    ISBN 0-8069-6460-X.



  5. ^ 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.



  6. ^ "Trimeresurus macrolepis". Integrated Taxonomic Information System. Retrieved 27 September 2006.


  7. ^ abcde Das, Indraneil. 2002. A Photographic Guide to Snakes and Other Reptiles of India. Ralph Curtis Books. Sanibel Island, Florida. 144 pp.
    ISBN 0-88359-056-5. (Trimeresurus macrolepis, p. 66.)



  8. ^ abcde Smith, M.A. 1943. The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-region. Reptilia and Amphibia. Vol. III.—Serpentes. Secretary of State for India. (Taylor and Francis, Printers.) London. xii + 583 pp. (Trimeresurus macrolepis, pp. 505-506.)


  9. ^ Boulenger. 1896. p. 560.


  10. ^ Malhotra, Anita & Thorpe, Roger S. (2004). "A phylogeny of four mitochondrial gene regions suggests a revised taxonomy for Asian pitvipers (Trimeresurus and Ovophis)" (PDF). Molecular Phylogenetics and Evolution. 32: 83–100. doi:10.1016/j.ympev.2004.02.008. PMID 15186799. Retrieved 9 June 2013.CS1 maint: Uses authors parameter (link)


  11. ^ David, Patrick; Vogel, Gernot & Dubois, Alain (11 Aug 2011). "On the need to follow rigorously the Rules of the Code for the subsequent designation of a nucleospecies (type species) for a nominal genus which lacked one: the case of the nominal genus Trimeresurus Lacépède, 1804 (Reptilia: Squamata: Viperidae)" (PDF). Zootaxa (2992): 1–51. Retrieved 9 June 2013.CS1 maint: Uses authors parameter (link)


  12. ^ Cambell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. Comstock. Ithaca and London. 870 pp., 1500 plates.
    ISBN 0-8014-4141-2.





Further reading


.mw-parser-output .refbeginfont-size:90%;margin-bottom:0.5em.mw-parser-output .refbegin-hanging-indents>ullist-style-type:none;margin-left:0.mw-parser-output .refbegin-hanging-indents>ul>li,.mw-parser-output .refbegin-hanging-indents>dl>ddmargin-left:0;padding-left:3.2em;text-indent:-3.2em;list-style:none.mw-parser-output .refbegin-100font-size:100%


  • Beddome, R.H. 1862. Notes upon the land and freshwater Snakes of the Madras Presidency. Madras Quarterly Journ. Med. Sci., 5: 1-31. (Trimeresurus macrolepis, p. 2.)


  • Boulenger, G.A. 1896. Catalogue of the Snakes in the British Museum (Natural History). Vol. III., Containing the...Viperidæ. Trustees of the British Museum (Natural History). (Taylor and Francis, Printers.) London. xiv + 727 pp. + Plates I.- XXV. (Lachesis macrolepis, p. 560.)



External links





  • Trimeresurus macrolepis at the Reptarium.cz Reptile Database. Accessed 6 December 2007.







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