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Ziegler T.,Cologne Zoo | Nazarov R.,Moscow State University | Orlov N.,Russian Academy of Sciences | Nguyen T.Q.,Institute of Ecology and Biological Resources | And 4 more authors.
Zootaxa | Year: 2010

We describe a third cryptic species of the genus Cyrtodactylus from Phong Nha - Ke Bang National Park, Quang Binh Province, Vietnam. Cyrtodactylus roesleri sp. nov. is distinguished from the remaining Indochinese bent-toed geckos by a combination of the following characters: size small, with a maximum SVL of 75.3 mm; dorsal pattern consisting of dark nuchal band and 4-5 sometimes irregularly shaped dark transversal bands between limbs; ventrals in 34-40 longitudinal rows at midbody; continuous series of 20-28 precloacal and femoral pores in males; subcaudal scales transversally enlarged. It is the 15 th new reptilian taxon described as new from the karst forests of Phong Nha - Ke Bang National Park in the past decade. In addition, it is the 19th species of Cyrtodactylus known from Vietnam and the third Cyrtodactylus occurring in sympatry in the karst forests of Phong Nha - Ke Bang National Park. Copyright © 2010 Magnolia Press.


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.


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.


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.


Vogel G.,Society for Southeast Asian Herpetology | Nguyen T.Q.,Vietnam Academy of Science and Technology | Kingsada P.,National University of Laos | Ziegler T.,Cologne Zoo
North-Western Journal of Zoology | Year: 2012

A new species of the genus Lycodon is described from northern Laos. It differs from the superficially similar Lycodon ruhstrati by the colouration of the body and venter, the number of bands on body and tail; from the Lycodon fasciatus group by the number of the bands, the unbanded venter and the loreal not touching the eye. This new species is only known from the karst hills in Vientiane Province, Laos. © NwjZ, Oradea, Romania, 2012.


Schneider N.,University of Bonn | Phung T.M.,Dong Khoi 9A | Le M.D.,National American University | Nguyen T.Q.,Vietnam Academy of Science and Technology | And 2 more authors.
Zootaxa | Year: 2014

We describe a new species of the genus Cyrtodactylus from southern Vietnam, based on morphological and molecular datasets. Cyrtodactylus cucdongensis sp. nov. is described on the basis of seven specimens collected from Cuc Dong Cape, Khanh Hoa Province. The new species can be distinguished from the remaining bent-toed geckos by a combination of the following characters: maximum SVL 65.9 mm; 16-19 dorsal tubercle rows; 41-44 ventral scales at midbody; 5 or 6 precloacal pores in males, 4-6 pitted precloacal scales in females; no femoral pores; 6-13 enlarged precloacal scales; 5- 9 enlarged femoral scales; no transversally enlarged subcaudals; dorsal pattern consisting of irregular dark bands. This is the 33rd species of Cyrtodactylus known from Vietnam. © 2014 Magnolia Press.


Rosler H.,F. Freiligrath Strasse 51 | Bauer A.M.,Villanova University | Heinicke M.P.,Villanova University | Greenbaum E.,University of Texas at El Paso | And 3 more authors.
Zootaxa | Year: 2011

A review of the taxonomy, phylogeny, and zoogeography of all currently recognized Gekko species is provided based on morphology (including size, scalation, color, and pattern) and mitochondrial and nuclear DNA sequence data. We distinguish six morphological (phenotypic) species groups within the gekkonid genus Gekko: the G. gecko, G. japonicus, G. monarchus, G. petricolus, G. porosus, and G. vittatus groups, all of which receive support from molecular phylogenetics. The taxon G. reevesii, formerly evaluated as a synonym of G. gekko, is revalidated herein at specific rank. Furthermore, a preliminary identification key of all currently recognized Gekko taxa is provided. Copyright © 2011 • Magnolia Press.


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.


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.


Nazarov R.,Moscow State University | Poyarkov N.A.,RAS A.N. Severtsov Institute of Ecology and Evolution | Orlov N.L.,Russian Academy of Sciences | Phung T.M.,Dong Khoi 9A | And 3 more authors.
Zootaxa | Year: 2012

We describe two new species of the Cyrtodactylus irregularis complex both based on phylogenetic analysis of 654 bp of COI mtDNA gene and morphological analyses of voucher specimens from Binh Phuoc and Lam Dong provinces, southern Vietnam. Cyrtodactylus bugiamapensis sp. nov. is described from the monsoon tropical forests of Bu Gia Map National Park, Binh Phuoc Province, and is distinguished from the remaining representatives of the C. irregularis complex by a combination of the following characters: (1) size medium, with a maximum SVL of 76.8 mm; (2) original tail relatively thin, longer than body; (3) presence of enlarged femoral scales without femoral pores; (4) preclocal groove lacking; (5) 36-46 longitudinal rows of ventral scales at midbody; (6) males with 7-11 precloacal pores in an angular continuous series; (7) absence of enlarged subcaudals; (8) dorsal pattern consisting of a dark neck band which can be medially divided, and irregular dark brown spots with bright white edges. Cyrtodactylus bidoupimontis sp. nov. is described from mountainous evergreen tropical forests of Bidoup - Nui Ba National Park, Lam Dong Province, and is most similar to C. irregularis sensu stricto from which it is distinguished by a combination of the following characters: (1) absence of enlarged, strongly keeled conical tubercles on the dorsal tail-base; (2) presence of flat rounded smooth to weakly keeled dorsal tubercles; (3) pallid dorsal head surface pattern lacking distinct dark brown irregular spots with light edges; and (4) elongated limbs. Phylogenetic analyses revealed the presence of a number of cryptic allopatric species within the C. irregularis complex. Long geological history and complicated relief of the Lang Bian plateau and surrounding areas might have shaped the present diversity within the C. irregularis complex. COI DNA-barcoding appears to be a useful tool to reveal cryptic diversity within the genus Cyrtodactylus. Copyright © 2012. Magnolia Press.

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