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Trimerodytes yapingi (GUO, ZHU & LIU, 2019)

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Higher TaxaColubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesChinese: 景东华游蛇
E: Jingdong Water Snake 
SynonymSinonatrix yapingi GUO, ZHU & LIU 2019
Trimerodytes yapingi — REN et al. 2019 (by implication)
Trimerodytes yapingi — DINH et al. 2022 
DistributionChina (Yunnan), Laos

Type locality: Jingdong (24.53°N, 100.94°E), Yunnan Province, China, at an elevation of 1500 m a.s.l.  
Reproduction 
TypesHolotype: YBU 15296, adult female, collected by F. Zhu and Z.Q. Zhang in August 2015. 
DiagnosisDiagnosis: 1) Large body size (maximum total length more than 795 mm); 2) dorsal scales in 19-19-17 rows, moderately keeled except outer four; 3) prefrontal single; 4) ventral scales 149, subcaudals 55, paired; 5) cloaca divided; 6) body bands 30; 7) belly milk-white, without speckles or bands; 8) reduction of dorsal scale rows from 19 to 17 anterior to 90th ventral scale; 9) reduction of caudodorsal scales rows from 8 to 6 anterior to 12th subcaudal and from 6 to 4 anterior to 38th subcaudal; 10) postorbital bones not in contact with frontals, with weak parietal ridge; end of supratemporal bones extending beyond braincase; maxillary teeth 25, last two not enlarged; dentary teeth 26. In addition, the genetic distances between the new species and each Sinonatrix representative range from 14.6% to 15.0%.


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Comment 
EtymologyThe species is named after Dr. Yaping Zhang, a Chinese academician, in recognition of his great contribution to Chinese herpetological research. 
References
  • Dinh, T. S., Phimpasone, V., Ha, H. B., Nguyen, T. Q., Ziegler, T., & Luu, V. Q. 2022. New country record of Trimerodytes yapingi (Guo, Zhu & Liu, 2019)(Squamata: Natricidae) from Laos with the first description of a male specimen and expanded diagnosis Bonn zoological Bulletin 71 (2): 99–103 - get paper here
  • GUO, PENG; FEI ZHU & QIN LIU 2019. A new member of the genus Sinonatrix (Serpentes: Colubridae) from western China. Zootaxa 4623 (3): 535–544 - get paper here
  • REN, Jinlong; Kai WANG, Peng GUO, Yingyong WANG, Tao Thien NGUYEN, and Jiatang LI 2019. On the Generic Taxonomy of Opisthotropis balteata (Cope, 1895) (Squamata: Colubridae: Natricinae): Taxonomic Revision of Two Natricine Genera. Asian Herpetological Research 10 (2): 105–128; DOI: 10.16373/j.cnki.ahr.180091 - get paper here
  • Wang K, Lyu ZT, Wang J, Qi S, Che J 2022. Updated Checklist and Zoogeographic Division of the Reptilian Fauna of Yunnan Province, China. Biodiversity Science 30 (4): 21326, 1–31 - get paper here
  • Wang, Kai; Jinlong Ren, Hongman Chen, Zhitong Lyu, Xianguang Guo Ke Jiang, Jinmin Chen, Jiatang Li, Peng Guo, Yingyong Wang, Jing Che 2020. The updated checklists of amphibians and reptiles of China. Biodiversity Science 28 (2): 189-218 - get paper here
 
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