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Achalinus yangdatongi HOU, WANG, GUO, CHEN, YUAN & CHE, 2021

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Higher TaxaXenodermidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Yang’s Odd-scaled Snake
Chinese: 杨氏脊蛇 (Pinyin: Yang Shi Ji She) 
SynonymAchalinus yangdatongi HOU, WANG, GUO, CHEN, YUAN & CHE 2021 
DistributionChina (Yunnan)

Type locality: Xiaoqiaogou (23.361°N, 104.686°E; 1609 m a.s.l.), Xichou County, Wenshan, Yunnan Province, China.  
Reproduction 
TypesHolotype. KIZ 034327, adult male, collected by Kai Xu on 15 April 2018. 
DiagnosisDiagnosis: Achalinus yangdatongi sp. nov. can be distinguished from recognized species of Achalinus by a combination of the following characters: (1) TaL/ToL 26.2% in the male; (2) suture between internasals distinctly longer than that between prefrontals; (3) internasal present; (4) loreal present; (5) supralabials 6; (6) temporals 2+2+3, anterior two temporals in contact with eye; (7) infralabials 6; (8) first pair of infralabials in contact with each other behind mental; (9) dorsal body scales in 23–23–19 rows; (10) scales behind head irregular in shape, smooth; (11) ventrals 161; (12) subcaudals 82, unpaired; (13) precloacal scale entire; (14) maxillary teeth 19; and (15) body surface black above and beneath, iridescent.


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CommentDistribution: see Hou et al. 2021: 529 (Fig. 1) for a map. 
EtymologyThe species name, yangdatongi, is a patronym honoring the Chinese herpetologist, Dr. Da-Tong Yang. We name the new species after Dr. Yang in recognition of his great contributions to the herpetological research in Southwestern China, particularly in Yunnan Province where the new species is found. 
References
  • HOU, S. B., WANG, K., GUO, P., CHEN, J. M., YUAN, Z. Y., & CHE, J. 2021. Two new species and a new country record of the genus Achalinus (Reptilia: Squamata: Xenodermidae) from China. Zootaxa 4950 (3): 528-546 - get paper here
  • LI, K., WU, Y. Y., XU, R. Y., ZHU, F., REN, J. L., GUO, P., & DONG, B. J. 2021. A new species of the Achalinus rufescens complex (Xenodermidae: Achalinus) from Fujian Province, China. Zootaxa 5026 (2): 239-254 - 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
  • Xu, R., Li, K., Zhang, H., He, H., Zhu, F., Wu, Y., & Guo, P. 2023. Expanded Description of Achalinus yangdatongi (Serpentes: Xenodermidae). Current Herpetology, 42(1), 1-8 - get paper here
  • YANG, DIAN-CHENG; YU-HAO XU, JIA-XIANG WU, YAN-AN GONG, RU-YI HUANG, JUN XIANG, ZHENG-LIAN FENG, TIAN-QI HUANG, SONG HUANG 2023. A new species of the genus Achalinus (Squamata: Xenodermidae) from Nanning, Guangxi, China. Zootaxa 5319 (1): 389-402 - get paper here
 
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