Abstract
A new species of Pareas Wagler, 1830 is described from Dulongjiang Township, Gongshan County, Yunnan Province, China. Phylogenetically, the new species is most closely related to Pareas kaduri Bhosale, Phansalkar, Sawant, Gowande, Patel and Mirza, 2020; however, the genetic divergence (uncorrected p-distance) of the cyt b gene between the new species and P. kaduri reached 9.4%. Morphologically, the new species can be distinguished from P. kaduri by the absence of preoculars, loreal bordering the orbit, the fusion of subocular and postocular, three rows enlarged vertebral scales, five rows keeled mid-dorsal scales at the middle of the body, having more subcaudals, and having a relatively longer tail. In addition, the new species can be distinguished from all other congeners by a combination of morphological characteristics. Our work brings the total number of recognized species of the genus Pareas to 29, of which 23 occur in China.
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