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Issue: Vol. 4263 No. 1: 8 May 2017
Type: Article
Published: 2017-05-08
DOI: 10.11646/zootaxa.4263.1.10
Page range: 179–193
Abstract views: 215
PDF downloaded: 3

A new karst dwelling species of the Gekko japonicus group (Squamata: Gekkonidae) from central Laos

Department of Wildlife, Faculty of Forest Resources and Environmental Management, Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, Vietnam. Institute of Zoology, Department of Terrestrial Ecology, University of Cologne, Zülpicher Strasse 47b, D-50674 Cologne, Germany. AG Zoologischer Garten Köln, Riehler Strasse 173, D–50735 Cologne, Germany.
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam.
Faculty of Environmental Sciences, Hanoi University of Science, Vietnam National University, 334 Nguyen Trai Road, Hanoi, Vietnam. Centre for Natural Resources and Environmental Studies, Hanoi National University, 19 Le Thanh Tong, Hanoi, Vietnam. Department of Herpetology, American Museum of Natural History, Central Park West at 79th Street, New York, New York 10024
Institute of Zoology, Department of Terrestrial Ecology, University of Cologne, Zülpicher Strasse 47b, D-50674 Cologne, Germany.
Institute of Zoology, Department of Terrestrial Ecology, University of Cologne, Zülpicher Strasse 47b, D-50674 Cologne, Germany. AG Zoologischer Garten Köln, Riehler Strasse 173, D–50735 Cologne, Germany.
Gekko nadenensis sp. nov. Khammouane Province karst forest morphology molecular phylogeny Reptilia Laos

Abstract

A new species of the Gekko japonicus group is described from Khammouane Province, central Laos, based on morphological characters and molecular data. Morphologically, Gekko nadenensis sp. nov. is differentiated from the remaining congeners by a combination of the following characters: size moderate (SVL 61.0–77.1 mm); nares bordered with rostral; internasals absent; postmentals enlarged; interorbital scales between anterior corners of the eyes 28–30; dorsal tubercles absent; ventral scales between mental and cloacal slit 175–185; midbody scale rows 123–140; ventral scale rows 38–40; subdigital lamellae on first toes 13–15, on fourth toes 14–16; finger and toe webbing present at base; tubercles on dorsal surface of fore and hind limbs absent; precloacal pores six (3+3 or 5+1) in a discontinuous row in males, absent in the female; postcloacal tubercles 1 or 2; tubercles absent on dorsal surface of tail base; subcaudals distinctly enlarged; dorsal surface of body with greyish brown blotches. Molecular analyses demonstrated the new species is closely related to G. bonkowskii and G. thakhekensis, but separated from them by approximately 7% in genetic divergence as shown by a fragment of the mitochondrial ND2 gene.

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