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Trimeresurus mcgregori TAYLOR, 1919

IUCN Red List - Trimeresurus mcgregori - Data Deficient, DD

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Higher TaxaViperidae, Crotalinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: McGregor's pitviper, McGregor's Tree Viper
G: Batanes-Bambusotter 
SynonymTrimeresurus mcgregori TAYLOR 1919: 110
Trimeresurus flavomaculatus mcgregori — LEVITON 1961
Trimeresurus flavomaculatus macgregori — KLEMMER 1963
Trimeresurus flavomaculatus mcgregori — WELCH 1994: 115
Trimeresurus mcgregori — GUMPRECHT 2001
Trimeresurus mcgregori — GUMPRECHT et al. 2004
Parias flavomaculatus mcgregori — MALHOTRA & THORPE 2004
Trimeresurus mcgregori — MATTISON 2007: 225
Parias mcgregori — ORLOV et al. 2009
Parias mcgregori — GUO et al. 2010
Trimeresurus (Parias) mcgregori — DAVID et al. 2011
Parias mcgregori — WALLACH et al. 2014: 538
Parias mcgregori — GUO et al. 2018 
DistributionPhilippines (Batan Island)

Type locality: Batan Island, Philippines.  
TypesNeotype: CAS 60525 
DiagnosisDESCRIPTION. Scales on head and chin smooth or irregularly keeled; second upper labial fused to scale forming forming anterior border of facial pit; a distinct light stripe, or at least a series of light spots, present along outer scale row; dorsal color yellow to greenish yellow with darker pigments forming irregular spotted patches along middorsum; tail not distinctly differentiated from body by color; hemipenes without spines (from Leviton et al. 2014: 517). 

Conservation: one of the 30 most endangered viper species (Maritz et al. 2016).

Habitat: fully arboreal (Harrington et al. 2018). 
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • 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
  • David,P. & Ineich,I. 1999. Les serpents venimeux du monde: systématique et répartition. Dumerilia 3: 3-499
  • Fischer, J. G. 1885. Ichthyologische und herpetologische Bemerkungen. V. Herpetologische Bemerkungen. Jahrb. Hamburg. Wiss. Anst. 2: 82-121 - get paper here
  • Fischer, J. G. 1885. Ichthyologische und herpetologische Bemerkungen. Teil IV: Über eine Kollektion von Amphibien und Reptilien von Mindanao. Jahrb. Hamburg. Wiss. Anst. 2: 80-81 - get paper here
  • Gaulke, M. 2001. Die Herpetofauna von Sibaliw (Panay), einem der letzten Tieflandregenwaldgebiete der West-Visayas, Philippinen. Teil II: Schlangen. Herpetofauna 23 (131): 23-34 - get paper here
  • Gaulke, M. 2006. Trimeresurus flavomaculatus (GRAY 1842) - Philippinen-Bambusotter. Reptilia (Münster) 11 (57): 51-54 - get paper here
  • Gaulke, M. 2006. Trimeresurus flavomaculatus. Reptilia (GB) (47): 43-46 - get paper here
  • Gaulke, M. & A. D. Demegillo 2008. Der Mabitang (Varanus mabitang), ein Früchte fressender Großwaran von den Philippinen. Reptilia (Münster) 13 (71): 67-74 - get paper here
  • Gray, J. E. 1842. Synopsis of the species of Rattle snakes, or Family of Crotalidae. Zoological Miscellany 2: 47- 51. - get paper here
  • Griffin, L.E. 1910. A list of snakes from the island of Polillo, P. I.,, with descriptions of a new genus ands two new species. Philippine Journal of Science 5 (4): 211-217 - get paper here
  • Gumprecht, A. 2002. Die Bambusottern der Gattung Trimeresurus Lacépède Teil V: Die philippinischen Bambusottern des Trimeresurus flavomaculatus-Komplexes II. Die Batanes-Bambusotter Trimeresurus mcgregori TAYLOR 1919. Sauria 24 (3): 31-44 - get paper here
  • Gumprecht, A.; Tillack, F.; Orlov, N.L.; Captain, A. & Ryabow, S. 2004. Asian pitvipers. Geitje Books, Berlin, 368 pp.
  • Gumprecht,A. 2001. Die Bambusottern der Gattung Trimeresurus Lacépède Teil V: Die philippinischen Bambusottern I: Die Philippinen- oder Gelbflecken-Bambusotter Trimeresurus flavomaculatus (GRAY 1842). Sauria 23 (3): 3-14 - get paper here
  • Gumprecht,A. 2001. Die Bambusottern der Gattung Trimeresurus Lacépède Teil IV: Checkliste der Trimeresurus-Arten Thailands. Sauria 23 (2): 25-32 - get paper here
  • Günther, A. 1879. List of mammals, reptiles, and batrachians sent by Mr. Everett from the Philippine Islands. Proc. Zool. Soc. London 1879: 74-79 - get paper here
  • Guo, P.; Jadin, R.C.; Malhotra, A. & Li, C. 2009. An investigation of the cranial evolution of Asian pitvipers (Serpentes: Crotalinae), with comments on the phylogenetic position of Peltopelor macrolepis. Acta Zoologica 91: 402-407 - get paper here
  • Guo, Peng; Qin Liu, Guanghui Zhong, Fei Zhu, Fang Yan, Ting Tang, Rong Xiao, Min Fang, Ping Wang and Xin Fu 2015. Cryptic diversity of green pitvipers in Yunnan, South-west China (Squamata, Viperidae). Amphibia-Reptilia 36 (3): 265 - 276 - 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
  • Klemmer,K. 1963. Liste der rezenten Giftschlangen. Elapidae, Hydropheidae [sic], Viperidae und Crotalidae. In: Die Giftschlangen der Erde. Behringwerk-Mitteilungen, spec. Suppl., Marburg.
  • Klusmeyer, B. & Fausten, B. 1994. Haltung und NAchzucht der Bambusotter Trimeresurus flavomaculatus halieus. Salamandra 30 (3): 174-184 - get paper here
  • Leviton, A.E. 1964. Contributions to a review of Philippine snakes. V. The snakes of the genus Trimeresurus. Philippine J. Sci. 93: 251-276 - get paper here
  • Leviton, A.E., R.M. Brown, and C.D. Siler. 2014. The dangerously venomous snakes of the Philippine Archipelago. in The Coral Triangle: The 2011 Hearst Biodiversity Philippine Expedition (G.C. Williams and T.M. Gosliner, eds.). California Academy of Sciences, USA, Pp 473–530
  • Malhotra, Anita & Thorpe, Roger S. 2004. A phylogeny of four mitochondrial gene regions suggests a revised taxonomy for Asian pitvipers (Trimeresurus and Ovophis). Molecular Phylogenetics and Evolution 32: 83 –100 [erratum p. 680] - get paper here
  • Maritz, Bryan; Johannes Penner, Marcio Martins, Jelka Crnobrnja-Isailović, Stephen Spear, Laura R.V. Alencar, Jesús Sigala-Rodriguez, Kevin Messenger, Rulon W. Clark, Pritpal Soorae, Luca Luiselli, Chris Jenkins, Harry W. Greene 2016. Identifying global priorities for the conservation of vipers. Biological Conservation, doi:10.1016/j.biocon.2016.05.004 - get paper here
  • Mattison, Chris 2007. The New Encyclopedia of Snakes. Princeton University Press
  • McDiarmid, R.W.; Campbell, J.A. & Touré,T.A. 1999. Snake species of the world. Vol. 1. [type catalogue] Herpetologists’ League, 511 pp.
  • O’Shea, M. 2018. The Book of Snakes. Ivy Press / Quarto Publishing, London, - get paper here
  • Philippen, Hans-Dieter P 2014. Vielfalt ist Trumpf. Draco 16 (57): 6-15 - get paper here
  • Sanders, K. L.; Malhotra, A.; Thorpe, R. S. 2004. Ecological diversification in a group of Indomalayan pitvipers (Trimeresurus): convergence in taxonomically important traits has implications for species identification. Journal of Evolutionary Biology 17(4):721-731. - get paper here
  • Schatti, B. & Guillod, M. 1990. Bemerkungen zur Rassengliederung bei der Philippinischen Bambusotter, Trimeresurus flavomaculatus (GRAY 1842). Herpetofauna 12 (66): 32-34 - get paper here
  • Siler, C.D.; L.J. Welton; J.M. Siler; J. Brown; A. Bucol; A.C. Diesmos; R. Brown. 2011. Amphibians and Reptiles, Luzon Island, Aurora Province and Aurora Memorial National Park, Northern Philippines: New island distribution records. Check List 7 (2):182-195 - get paper here
  • Sweeney, Roger 1994. McGregor's pit viper, Trimeresurus flavomaculatus mcgregori. Herptile: Journal of the International Herpetological Society 19 (2): 86-88
  • Taylor, E.H. 1919. New or rare Philippine reptiles. Philippine Journal of Science 14: 105-125
  • 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.
  • Weinell, Jeffrey L.; Errol Hooper, Alan E. Leviton, Rafe M. Brown 2019. Illustrated Key to the Snakes of the Philippines. Proc. Cal. Acad. Sci. (4) 66 (1): 1-49 - get paper here
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