Trimeresurus sabahi

{{Short description|Species of snake}} {{Speciesbox | image = Trimeresurus sabahi fucatus, Banded pit viper - Takua Pa District, Phang-nga Province (46710893582).jpg | image_caption = ''Trimeresurus sabahi fucatus'' | status = LC | status_system = IUCN3.1 | status_ref = <ref name=IUCN>{{cite iucn |author=Iskandar, D. |author2=Das, I. |author3=Inger, R.F. |author4=Vogel, G. |author5=Dehling, M. |year=2022 |amends=2013 |title=''Trimeresurus sabahi'' |volume=2022 |article-number=e.T192042A217766870 |doi=10.2305/IUCN.UK.2022-1.RLTS.T192042A217766870.en |access-date=19 September 2022}}</ref> | genus = Trimeresurus | species = sabahi | authority = Regenass & Kramer, 1981 | synonyms = * ''Trimeresurus popeorum sabahi'' Regenass & Kramer, 1981 * ''Trimeresurus gramineus sabahi'' – Welch, 1988 * ''Trimeresurus popeorum sabahi'' – Golay ''et al.'', 1993<ref name="McD99">McDiarmid RW, [[Jonathan A. Campbell|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).</ref> *''Trimeresurus popeiorum sabahi'' – Gumprecht et al., 2004 *''Trimeresurus sabahi'' – Vogel et al., 2004 *''Popeia sabahi'' – Creer et al., 2006 *''Trimeresurus (Popeia) sabahi'' – Vogel et al., 2011 }}

'''''Trimeresurus sabahi''''', [[common name|commonly known]] as the '''Sabah pit viper'''<ref name=IUCN/> or '''Sabah bamboo pitviper''',<ref name=RDB/><ref name="Gum04">Gumprecht A, Tillack F, [[Nikolai Liutsianovich Orlov|Orlov NL]], [[Ashok Captain|Captain A]], Ryabov S. 2004. ''Asian Pitvipers''. Geitje Books. Berlin. 1st Edition. 368 pp. {{ISBN|3-937975-00-4}}.</ref> is a [[venomous snake|venomous]] [[Crotalinae|pitviper]] [[species]].<ref name=RDB/> If defined narrowly, it is [[endemic]] to the island of [[Borneo]].<ref name=IUCN/> If defined more broadly, it consists of five [[subspecies]] found in [[Southeast Asia]].<ref name=RDB/>

==Subspecies== There are five subspecies:<ref name=RDB/> * ''[[Trimeresurus sabahi barati]]'' Regenass & Kramer, 1981 – Sumatra, Mentawai Archipelago (Indonesia) * ''[[Trimeresurus sabahi buniana|T. s. buniana]]'' [[Larry Lee Grismer|Grismer]], Grismer & McGuire, 2006 – [[Tioman Island]] (Malaysia) * ''[[Trimeresurus sabahi fucatus|T. s. fucatus]]'' Vogel, David & [[Olivier Sylvain Gérard Pauwels|Pauwels]], 2004 – [[Malay Peninsula]] (southern Myanmar, Thailand, West Malaysia) [[File:Trimeresurus sabahi fucatus, Sabah pit viper (female) - Yong Waterfall National Park (50770215012).jpg|thumb|'''''T. s fucatus''''']] * ''T. s. sabahi'' Regenass & Kramer, 1981 – northern [[Borneo]] (Malaysia) * ''[[Trimeresurus sabahi toba|T. s. toba]]'' David, Petri, Vogel & Doria, 2009 – Sumatra

IUCN treats these as full species, respectively ''T. barati'',<ref>{{cite iucn |author=Iskandar, D. |author2=Vogel, G. |author3=Inger, R.F. |author4=Auliya, M. |year=2022 |amends=2012 |title=''Trimeresurus barati'' |volume=2022 |article-number=e.T191923A217765960 |doi=10.2305/IUCN.UK.2022-1.RLTS.T191923A217765960.en |access-date=18 September 2022}}</ref> ''T. buniana'',<ref name=IUCN3>{{cite iucn |author=Grismer, L. |year=2022 |amends=2012 |title=''Trimeresurus buniana'' |volume=2022 |article-number=e.T192086A217767279 |doi=10.2305/IUCN.UK.2022-1.RLTS.T192086A217767279.en |access-date=19 September 2022}}</ref> ''T. fucatus'',<ref name=IUCN4>{{cite iucn |author=Wogan, G. |author2=Vogel, G. |author3=Pauwels, O.S.G. |year=2012 |title=''Trimeresurus fucatus'' |volume=2012 |article-number=e.T178659A1541045 |doi=10.2305/IUCN.UK.2012-1.RLTS.T178659A1541045.en |access-date=19 September 2022}}</ref> and ''T. toba'',<ref name=IUCN5>{{cite iucn |author=Iskandar, D. |author2=Vogel, G. |author3=Inger, R.F. |year=2022 |amends=2012 |title=''Trimeresurus toba'' |volume=2022 |article-number=e.T193452A217770501 |doi=10.2305/IUCN.UK.2022-1.RLTS.T193452A217770501.en |access-date=19 September 2022}}</ref> restricting ''T. sabahi'' to the [[nominotypical subspecies]].<ref name=IUCN/>

==Description== Adults may attain a [[snout-vent length]] (SVL) of {{convert|62|cm|in|abbr=on}}.<ref name="Das2006">Das, Indraneil. ''A Photographic Guide to Snakes and Other Reptiles of Borneo''. Ralph Curtis Books. Sanibel Island, Florida. 144 pp. {{ISBN|0-88359-061-1}}. (''Popeia sabahi'', p. 56.)</ref>

Dorsally, it is uniform green, without crossbars. Ventrally it is pale green. There is narrow bicolor stripe on the first one and a half dorsal scale rows. In males this stripe is rust-colored or red below, and it is white above. In females it is yellow or white. The [[Iris (anatomy)|iris]] of the eye is red or orange in adults of both sexes, but in young specimens may be yellowish-green. There are no markings behind the eye.<ref name="Das2006"/>

The scalation includes 21 (23) rows of [[dorsal scales]] at midbody, 149–157/148–156 [[ventral scales]] in males/females or 148–159 in general, 72–76/59–65 [[subcaudal scales]] in males/females, and 9–11 [[supralabial scales]] (9–10 with the third being the largest).<ref name="Gum04"/>

==Habitat== In Borneo, it inhabits mountainous regions at altitudes from {{convert|1,000|m|ft|abbr=on}} to {{convert|1,150|m|ft|abbr=on}}, where it is commonly found on branches of [[shrub]]s and other low vegetation.<ref name="Das2006"/>

==Reproduction== The reproductive biology of this species is unknown.<ref name="Das2006"/>

==References== {{Reflist|30em|refs= <ref name=RDB>{{NRDB species |genus=Trimeresurus |species=sabahi |access-date=19 September 2022}}</ref> }}

==Further reading== * Regenass, Urs; Kramer, Eugen. 1981. ''Zur Systematik der grünen Grubenottern der Gattung'' Trimeresurus ''(Serpentes, Crotalidae)''. Rev. Suisse de Zoolo. '''88''' (1): 163–205.

[[Category:Trimeresurus|sabahi]] [[Category:Snakes of Southeast Asia]] [[Category:Snakes of Indonesia]] [[Category:Snakes of Malaysia]] [[Category:Snakes of Myanmar]] [[Category:Snakes of Thailand]] [[Category:Reptiles described in 1981]] [[Category:Reptiles of Borneo]]