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A new species of the genus Oligodon Fitzinger, 1826 Squamata Colubridae from northern Vietnam, southern China and central Laos



A new species of the genus Oligodon Fitzinger, 1826 Squamata Colubridae from northern Vietnam, southern China and central Laos



Zootaxa 3498 (26 Sept): 45-62



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.

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Accession: 037386042

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