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David P.,CNRS Systematics, Biodiversity and Evolution Institute | Pham C.T.,Institute of Ecology and Biological Resources | Nguyen T.Q.,Institute of Ecology and Biological Resources | Ziegler T.,Cologne Zoo
Zootaxa | Year: 2011

A new species of the snake genus Opisthotropis Günther, 1872, Opisthotropis cucae sp. nov., is described from Kon Tum Plateau in central Vietnam. It is distinguished from any other Opisthotropis species by the combination of the following characters: (1) dorsal scales entirely smooth, in 23-19-19 rows; (2) 191 ventrals; (3) 1 loreal, in contact with internasal; (4) 7 supralabials, 5th entering orbit; (4) dorsum uniformly greyish-brown without bands or crossbars, with an irregular separation between dark dorsum and venter, greyish-yellow speckled with dark grey. An extended comparison with other species of the genus Opisthotropis species is provided together with a key to the known species of the genus. Opisthotropis cucae sp. nov. is the third new mountain stream snake described from Vietnam in the past decade. The grammatical gender of the genus Opisthotropis is discussed; this genus is feminine. Copyright © 2011. Source


Luu V.Q.,Forestry University of Vietnam | Nguyen T.Q.,Institute of Ecology and Biological Resources | Do H.Q.,Forestry University of Vietnam | Ziegler T.,Cologne Zoo
Zootaxa | Year: 2011

We describe a new species of the genus Cyrtodactylus based on two adult specimens from Huong Son limestone forest, Hanoi, Vietnam. Cyrtodactylus huongsonensis sp. nov. is distinguished from the remaining Indochinese bent-toed geckos by a combination of the following characters: medium-sized, with a maximum SVL of 89.8 mm; dorsal pattern consisting of dark nuchal loop, neck band and five in part irregular transverse body bands between limbs; two enlarged lateral chinshields in contact with first postmental pair; dorsal tubercles present on occiput, body, forearms, hind limbs and tail base; 14-16 irregularly running dorsal tubercle rows; ventrals in 41-48 longitudinal rows at midbody; lateral skin folds present, without interspersed tubercles; six precloacal pores plus in total 17 femoral pores in males, which are separated by 8-12 poreless scales; enlarged femoral scales and precloacal scales present; three postcloacal spurs in males; subcaudal scales transversely enlarged. This is the 24th species of Cyrtodactylus known from Vietnam. © 2011 Magnolia Press. Source


David P.,CNRS Systematics, Biodiversity and Evolution Institute | Nguyen T.Q.,Vietnam Academy of Science and Technology | Nguyen T.T.,Vietnam Academy of Science and Technology | Jiang K.,CAS Kunming Institute of Zoology | And 3 more authors.
Zootaxa | Year: 2012

A new species of the genus Oligodon Fitzinger, 1826, Oligodon nagao sp. nov, is described on the basis of five specimens originating from Lang Son and Cao Bang provinces in northern Vietnam, Guangxi Autonomous Region in southern People's Republic of China, and from Khammouane Province in central Laos PDR. This species differs from other species of the region by the combination of 15 or 17 dorsal scale rows at midbody, unforked hemipenes, not spinose but with papillae, entire cloacal plate, a high number of ventrals, a rather short tail and dorsal pattern made of numerous dark, butterfly-shaped blotches. On the basis of the morphology of its hemipenes, Oligodon nagao sp. nov. belongs to the group of Oligodon cinereus. This new species is compared with other species of the Indochinese Peninsula and China with 15 or 17 dorsal scale rows, especially Oligodon joynsoni (Smith, 1917). An updated list of the Oligodon species of this region is provided. Copyright © 2012 Magnolia Press. Source


Ohler A.,CNRS Systematics, Biodiversity and Evolution Institute | Wollenberg K.C.,Harvard University | Grosjean S.,CNRS Systematics, Biodiversity and Evolution Institute | Hendrix R.,Bielefeld University | And 3 more authors.
Zootaxa | Year: 2011

Frogs in the subgenus Lalos of the genus Leptolalax (Megophryidae) are highly diversified in continental Asia and consist of about 17 nominal species. These frogs are small, inconspicuous, and of high superficial morphological similarity. We here formulate a hypothesis of phylogenetic relationships and assess the amount of genetic variation among genealogical lineages on the basis of 536bp of mitochondrial 16S rDNA sequences. Combining molecular data with a study of morphology, morphometric divergence and geographical proximity, we tested hypotheses of species identity. We (1) used characterbased and morphometric analyses to assign the onymophoronts (type specimens) of species in Lalos available to us to respectively one of the main clades, in order to propose the best potential correct taxonomic and nomenclatural allocation for the individuals included in the molecular study, and (2) tried to also assign the historical museum specimens to these molecular taxonomic units and to reclassify them whenever necessary. We also used the molecular data to match tadpoles with adults and provide tadpole descriptions for species the larvae of which were previously unknown. Specimens, that could neither be allocated to a molecularly characterised species (on the basis of their DNA "barcode") nor to a morphologically defined species named on the basis of a type specimen, are described here as new species. Based on this integrative set of data and analyses we describe two new species, Leptolalax eos n. sp. and Leptolalax nyx n. sp., we resurrect Leptolalax minimus, and reassess the distribution of the species studied. We propose changes in the Red List status of L. pelodytoides and L. ventripunctatus and suggest a conservation status for the new species described herein. © 2011 Magnolia Press. Source


Ziegler T.,Cologne Zoo | Ziegler T.,University of Cologne | Phung T.M.,Dong Khoi 9A | Le M.D.,National American University | And 2 more authors.
Zootaxa | Year: 2013

We describe a new species of the genus Cyrtodactylus based on five adult specimens from Dai Lanh Cape, Tuy Hoa District, Phu Yen Province, southern Vietnam. Cyrtodactylus kingsadai sp. nov. is distinguished from the remaining Indochinese bent-toed geckos by a combination of the following characters: maximum SVL of 94 mm; dorsal pattern consisting of a dark nuchal loop, continuous or partly interrupted neck band and four in part irregular transverse body bands between limbs; internasal single; dorsal tubercles in 17-23 irregular transverse rows; ventrals in 39-46 longitudinal rows at midbody; lateral skin folds present, without interspersed tubercles; precloacal pores 7-9 plus in total 3-7 femoral pores in males (1-4 femoral pores on each side) with precloacal and femoral pore series separated from each other by 7-9 poreless scales; enlarged femoral scales and precloacal scales present; postcloacal spurs three; subcaudal scales transversely enlarged. This is the 29th species of Cyrtodactylus known from Vietnam. © 2013 Magnolia Press. Source

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