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Type: Article
Published: 2021-08-25
Page range: 239-254
Abstract views: 775
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A new species of the Achalinus rufescens complex (Xenodermidae: Achalinus) from Fujian Province, China

College of Life Sciences, Shenyang Normal University, Shenyang 110034, China. Faculty of Agriculture, Forest and Food Engineering, Yibin University, Yibin 644007, China.
Faculty of Agriculture, Forest and Food Engineering, Yibin University, Yibin 644007, China.
Faculty of Agriculture, Forest and Food Engineering, Yibin University, Yibin 644007, China.
Collegel of Life Science, Guizhou Normal University, Guiyang 550025, China.
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China.
Faculty of Agriculture, Forest and Food Engineering, Yibin University, Yibin 644007, China.
College of Life Sciences, Shenyang Normal University, Shenyang 110034, China.
Reptilia Achalinus dehuaensis sp.nov. morphology molecular phylogeny taxanomy snake


A new species of the xenodermid snake genus Achalinus Peters, 1869 is described from Fujian Province, China, based on six specimens. Bayesian inference and maximum likelihood analyses based on a mitochondrial DNA fragment (CO1) indicated the new taxon is different from its congeners (p–distance ≥ 18.5%). Morphologically, the new species can be diagnosed from the other species by a combination of following characters: (1) dorsal scales 23 rows throughout, strongly keeled, the most outer rows on both sides also keeled and slightly enlarged; (2) tail relatively longer, TaL/TL ratio 0.26–0.29 in males, 0.21–0.22 in females; (3) maxillary teeth 30–33; (4) length of suture between internasals significantly longer than that between prefrontals; (5) nasal divided into two sections by nasal cleft; (6) a single loreal; (7) SPO 1, seldom 2; (8) SPL 6, the fourth and fifth contacting eye; (9) IFL5, rarely 6, the first three touching the first pair of chin shields; (10) TMP 7–9, arranged in three rows; (11) VS 142–149 in males, VS 152–154 in females; (12) SC 74–81 in males, SC 63–65 in females, arranged in a single row; (13) cloacal entire; (14) greyish brown above, pale yellow beneath; (15) dorsum with an indistinct longitudinal vertebral stripe. The description of the new species brings the total species of Achalinus to 19.



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