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Trimeresurus nebularis VOGEL, DAVID & PAUWELS, 2004

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Higher TaxaViperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Cameron Highlands pitviper, Clouded Pit viper 
SynonymTrimeresurus nebularis VOGEL, DAVID & PAUWELS 2004
Trimeresurus gramineus — BOULENGER 1912: 217 (part.) (non Coluber gramineus Shaw, 1802)
Trimeresurus gramineus — SMITH 1930: 90 (part.)
Trimeresurus gramineus — SMEDLEY 1932: 123
Trimeresurus gramineus — HOGE & ROMANO HOGE 1981: 257 (part.)
Trimeresurus popeiorum — TWEEDIE 1954: 117 (part.)
Trimeresurus popeiorum — TWEEDIE 1957: 121 (part.)
Trimeresurus popeiorum — TWEEDIE 1983: 139 (part.) (non Trimeresurus popeiorum SMITH 1937)
Trimeresurus popeiorum — LIM 1982: cover, 20 & 21: Fig. 22)
Trimeresurus popeiorum — LIM 1990: 393, 394: Fig. 7
Trimeresurus popeiorum — LIM 1991: cover, 23 (Fig. 25)
Trimeresurus popeiorum — LIM et al. 1995: 361 (part.)
Trimeresurus popeiorum — MANTHEY & GROSSMANN (1997: 409: Fig. 316).
Trimeresurus popae — TWEEDIE 1940: 131 (part.)
Trimeresurus popeorum — LIM 1982: 21 [partim].
Trimeresurus popeiorum ssp. — CHAN-ARD et al. 1999: 199
Trimeresurus popeiorum ssp. — CHAN-ARD et al. 1999: 199 [bottom], 200 [both pictures])
Popeia inornata SANDERS, MALHOTRA, GUMPRECHT, THORPE & KUCH 2004
Trimeresurus nebularis — DAVID et al. 2009
Trimeresurus (Popeia) nebularis — DAVID et al. 2011
Trimeresurus nebularis — LIVIGNI 2013: 396
Popeia nebularis — WALLACH et al. 2014: 575
Popeia nebularis — CHAN-ARD et al. 2015: 292
Trimeresurus nebularis — MULCAHY et al. 2017
Trimeresurus (Popeia) nebularis— MIRZA et al. 2023 
DistributionWest Malaysia (Cameron Highlands, endemic), Thailand

Type locality: Gunung Brinchang [now Gunung Batu Berinchang], Cameron Highlands, State of Pahang, West Malaysia.

Popeia inornata: West Malaysia; Type locality: Cameron Highlands, Pahang, Malaysia.  
Reproductionovovivparous 
TypesHolotype: USNM 142425; Paratypes in ZFMK, IRSNB, MNHN, ZRC, PSGY
Holotype: ZMB (Institut für systematische Zoologie, Museum für Naturkunde der Humboldt-Universität zu Berlin, Berlin, Germany) 66281, adult male, collected by indiginous collectors, July 2002. Paratypes: BMNH, CAS [Popeia inornata] 
DiagnosisDiagnosis: A species of Trimeresurus characterized by (1) hemipenes long, without spines; (2) 1 st supralabial distinct from nasal; (3) 21 DSR at midbody, moderately keeled; (4) overall bright green coloration with blue tones and blue upper lips in males and females, and yellowish green chin and throat; (5) large size, with a TL up to about 1000 mm in males and at leat 950 mm in females; (6) postocular streak absent in males and females; (7) ventrolateral stripes often missing, or white or pale blue; (9) upper lips bluish-green; (10) eye green in males and females; (11) tail dark rusty brown vertebrally, green laterally with a sharp border between the colours (similar to Trimeresurus albolabris or T. macrops); (12) a low number of scales between the supraoculars (9–10); (13) tail average in females, with a ratio TaL/TL 0.165–0.172; (14) VEN 147–153; SC: 50–65 (after VOGEL et al. 2004).


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CommentVenomous!

For synonymy and references see VOGEL, DAVID & PAUWELS 2004. This paper was published 15 Nov 2004 and thus T. nebularis has priority over Popeia inornata, which was published on 13 December 2004.

Habitat: fully arboreal (Harrington et al. 2018). 
EtymologyNamed after the Latin adjective nebularis, meaning “from the clouds”, in allusion to the cloudy montane rainforests, or cloud forests, inhabited by this species.

Etymology (P. inornata): The specific epithet inornata is an adjective in the feminine singular gender. The scientific name of the new species alludes to the fact that adult males of P. inornata lack ornamentation by a distinctive orange to brick red ventrolateral stripe, which is typically present in adult males of sexually dimorphic members of the genus Popeia, and that both sexes show reduction of the white lateral stripe. 
References
  • Böhme, Wolfgang 2014. Herpetology in Bonn. Mertensiella 21. vi + 256 pp. - get paper here
  • Chan-ard, T., Parr, J.W.K. & Nabhitabhata, J. 2015. A field guide to the reptiles of Thailand. Oxford University Press, NY, 352 pp. [see book reviews by Pauwels & Grismer 2015 and Hikida 2015 for corrections] - get paper here
  • Chan-ard,T.; Grossmann,W.; Gumprecht,A. & Schulz,K. D. 1999. Amphibians and reptiles of peninsular Malaysia and Thailand - an illustrated checklist [bilingual English and German]. Bushmaster Publications, Würselen, Gemany, 240 pp. [book review in Russ. J Herp. 7: 87] - get paper here
  • Charlton, Tom & Jason Skinner 2020. An Observation on Diet of the Cameron Highlands Pit Viper (Trimeresurus (Popeia) nebularis) Captive & Field Herpetology 4 (1): 31 - get paper here
  • Das, I. 2012. A Naturalist's Guide to the Snakes of South-East Asia: Malaysia, Singapore, Thailand, Myanmar, Borneo, Sumatra, Java and Bali. Oxford J, ohn Beaufoy Publishing - get paper here
  • David, P., Petri, M., Vogel, G. & G. Doria 2009. A new species of pitviper of the genus Trimeresurus (Popeia) from northern Sumatra (REPTILIA, SQUAMATA, VIPERIDAE). Annali del Museo Civico di Storia Naturale "G. Doria", Genova 100: 323-346
  • DAVID, PATRICK; GERNOT VOGEL & ALAIN DUBOIS 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). Zootaxa 2992: 1–51 - get paper here
  • Harrington, Sean M; Jordyn M de Haan, Lindsey Shapiro, Sara Ruane 2018. Habits and characteristics of arboreal snakes worldwide: arboreality constrains body size but does not affect lineage diversification. Biological Journal of the Linnean Society 125 (1): 61–71 - get paper here
  • Lim, Boo Liat 1982. Poisonous snakes of peninsular Malaysia, 2.ed. Malayan Nature Soc., Kuala Lumpur 73 pp.
  • LiVigni, F. (ed.) 2013. A Life for Reptiles and Amphibians, Volume 1. Chimaira, Frankfurt, 495 pp. - get paper here
  • Mirza ZA, H. T. Lalremsanga, Bhosale H, Gowande G, Patel H, Idiatullina SS, Poyarkov NA 2023. Systematics of Trimeresurus popeiorum Smith, 1937 with a revised molecular phylogeny of Asian pitvipers of the genus Trimeresurus Lacépède, 1804 sensu lato. Evolutionary Systematics 7(1): 91-104 - get paper here
  • MULCAHY, DANIEL G.; JUSTIN L. LEE, ARYEH H. MILLER, GEORGE R. ZUG 2017. Troublesome Trimes: Potential cryptic speciation of the Trimeresurus (Popeia) popeiorum complex (Serpentes: Crotalidae) around the Isthmus of Kra (Myanmar and Thailand). . Zootaxa 4347 (2): 301-315 - get paper here
  • Sanders, K. L., A. Malhotra, A. Gumprecht, R. S. Thorpe & U. Kuch 2004. Popeia inornata, a new species of pitviper from West Malaysia (Squamata: Viperidae: Crotalinae). Russ. J. Herpetol. 11(3): 171-184 - get paper here
  • Sumontha,M., Kunya,K., S. G. Pauwels,O., Nitikul,A., and Punnadee,S. 2011. Trimeresurus (Popeia) phuketensis, a New Pitviper (Squamata: Viperidae) from Phuket Island, Southwestern Thailand. Russ. J. Herpetol. 18 (3): 11-17 - get paper here
  • Thompson, C. & Thompson, T. 2008. First contact in the Greater Mekong - new species discoveries. WWF, 40 pp. - get paper here
  • Vogel, G.; David, P. & Pauwels, O.S.G. 2004. A review of morphological variation in Trimeresurus popeiorum (Serpentes: Viperidae: Crotalinae), with the description of two new species. Zootaxa 727: 1–63 - get paper here
  • Vogel, Gernot 2010. Zur Systematik der Schlangen der orientalischen Region: Forschungsdefizite führen zur Unterschätzung der Artenvielfalt. Ophidia 4 (2): 18-26 - get paper here
  • Wallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp.
 
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