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Tropidophorus cocincinensis DUMÉRIL & BIBRON, 1839

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Higher TaxaScincidae, Sphenomorphinae, Scincoidea, Sauria, Squamata (lizards) 
Subspecies 
Common NamesCochinchinese water skink 
SynonymTropidophorus Cocincinensis DUMÉRIL & BIBRON 1839: 556
Tropidophorus cochinchinensis — GÜNTHER 1861: 267
Tropidophorus cochinchinensis – BOULENGER 1887: 363 (part.)
Tropidophorus cocincinensis — SMITH 1923: 780
Tropidophorus cocincinensis — SMITH 1935: 329
Tropidophorus cocincinensis — BOBROV 1995
Tropidophorus concincinesis [sic] — GREER & BISWAS 2004 
DistributionThailand, S Vietnam, Cambodia

Type locality: unknown Map legend:
TDWG region - Region according to the TDWG standard, not a precise distribution map.

NOTE: TDWG regions are generated automatically from the text in the distribution field and not in every cases it works well. We are working on it.
 
Reproductionviviparous 
TypesHolotype: MNHN 2847. Smith (1923) mentioned 3 type specimens: MNHN 2845 – 2847. However, the original description was obviously based on a single specimen (Duméril & Bibron 1839). The holotype is MNHN 2847 because it has a TL (179 mm) which is identical with the original description. 
CommentNot listed by CHAN-ARD et al. 1999.

Type Species: Tropidophorus cocincinensis is the type species of the genus Tropidophorus Duméril & Bibron, 1839.

The genus is diagnosed by several characteristics, such as exposure of the tympanum and presence of a single scale at the corner of the eyelid (e.g. Greer 1970; Hikida et al. 2002; Greer & Biswas 2004).

Diagnosis (genus): According to Smith (1935), Taylor (1963), and Hikida et al. (2002) the following characters were selected for diagnosis of the genus: Palatine bones in contact in middle line of palate; pterygoids without teeth (or reduced to one or two teeth), in contact with each other anteriorly; palatal notch not reaching to level of centers of eyes; teeth conical; nostril in a single na- sal; frontonasal single or divided; supranasal absent; prefrontals, frontoparietals and an inter parietal present; lower eyelid scaly without disc; tympanum superf icial; dorsal and lateral scales keeled; limbs pentadactyl with transverse subdigital lamellae. Greer & Biswas (2004) proposed an additional generic character: anterior and posterior corners of eyelids contained within a single, wrap-around scale [from TRUONG et al. 2010].

Diagnosis. Upper head scales striated; frontonasal undivided; prefrontals in contact with or separated from each other by a small scale; loreals 2, separated from supralabials by a series of small scales; superciliaries 6 – 8, superciliary row not completed along the entire length of lateral edge of supraoculars; nuchals in 1 – 3 pairs; supralabials 7, f ifth below the eye; infralabials 6; postmental undivided; midbody scales in 30 – 33 rows; 13 – 14 scale rows at position of tenth subcaudal on tail; paravertebral scales 41 – 46; dorsal scales on tail distinctly keeled, two series of moderately elevated spines along middle of dorsal tail, being continuous with those on back; ventrals in 47 – 53 transverse rows; 2 enlarged precloacals; subdigital lamellae 18 – 21 under fourth toe (after Smith 1935; Bourret 2009; TRUONG et al. 2010). 
References
  • Bobrov V.V., Semenov D.V. 2008. Lizards of Vietnam [in Russian]. Moscow, 236 pp.
  • Chuaynkern, Y., Nabhitabhata, J., Inthara, C. Kamsook, M. & K. Somsri 2005. A New Species of the Water Skink Tropidophorus (Reptilia: Squamata: Scincidae) from Northeast Thailand. The Thailand Natural History Museum Journal 1(2): 165-176
  • Das, I. 2010. A Field Guide to the Reptiles of Southeast Asia. New Holland, London. 376 pp. [book review in Sauria 33 (3): 51, and Russ. J. Herp. 18: 325] - get paper here
  • Duméril, A. M. C. and G. Bibron. 1839. Erpétologie Générale on Histoire Naturelle Complète des Reptiles. Vol.5. Roret/Fain et Thunot, Paris, 871 pp. - get paper here
  • Greer, A.E. 1970. A subfamilial classification of scincid lizards. Bull. Mus. Comp. Zool. Harvard 139(3): 151-184. - get paper here
  • Greer, A.E. & Biswas, S. 2004. A Generic Diagnosis for the Southeast Asian Scincid Lizard Genus Tropidophorus Dumeéril and Bibron, 1839 with Some Additional Comments on Its Morphology and Distribution. Journal of Herpetology 38 (3): 426-430 - get paper here
  • Günther, A. 1861. Second list of Siamese reptiles. Ann. Mag. Nat. Hist. (3) 8: 266-268 - get paper here
  • Hartmann, T.; Chipich, H.; Handschuh, M.; Quang Trong, Nguyen; Böhme, W. 2009. First record of Tropidophorus cocincinensis Duméril and Bibron, 1839 from Cambodia. Herpetology Notes 2: 87-89 - get paper here
  • Hartmann, Timo 2012. Unter Forschern. Vielfalt zwischen Tempeln und Landminen – Herpetologische Feldarbeit in Kambodscha. Terraria Elaphe 2012 (3): 42-45 - get paper here
  • Heidrich, A. 2007. Abschlussbericht der Diplomarbeit “Etho-Ökologie und Morphologie ausgewählter Echsenarten im Phong Nha - Ke Bang Nationalpark, Vietnam”. Elaphe 15 (4): 53-58
  • Jestrzemski, Daniel; Stefan Schütz, Truong Quang Nguyen, Thomas Ziegler 2013. A survey of amphibians and reptiles in Chu Mom Ray National Park, Vietnam, with implications for herpetofaunal conservation. Asian Journal of Conservation Biology, 2 (2): 88–110 - get paper here
  • Nguyen, Luan Thanh; Ha Van Hoang, Thang Tai Nguyen,<br />McCormack Timothy E.M., Sang Ngoc Nguyen 2016. A COLLECTION OF AMPHIBIANS AND REPTILES FROM BAC HUONG HOA NATURE RESERVE, QUANG TRI PROVINCE, VIETNAM - get paper here
  • Nguyen, Quang Truong; Nguyen Van Sang, Nikolai Orlov, Hoang Ngoc Thao, Wolfgang Böhme and Thomas Ziegler 2010. A review of the genus Tropidophorus (Squamata, Scincidae) from Vietnam with new species records and additional data on natural history. Zoosyst. Evol . 86 (1): 5 – 19
  • Sang, Nguyen Van; Ho Thu Cuc, Nguyen, Quang Truong 2009. Herpetofauna of Vietnam. Chimaira, Frankfurt, 768 pp.
  • Smith,M.A. 1923. A review of the lizards of the genus Tropidophorus on the Asiatic mainland. Proc. Zool. Soc. London 1923: 775-781 - get paper here
  • Smith,M.A. 1935. The fauna of British India, including Ceylon and Burma. Reptiles and Amphibia, Vol. II. Sauria. Taylor and Francis, London, 440 pp.
  • Stuart, B.L., Rowley, J.J.L., Neang, T., Emmett, D.A. & Sitha, Som 2010. Significant new records of amphibians and reptiles from Virachey National Park, northeastern Cambodia. Cambodian Journal of Natural History 2010(1): 38–47 - get paper here
 
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