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

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Higher Taxa	Xenodermidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Yang’s Odd-scaled Snake Chinese: 杨氏脊蛇 (Pinyin: Yang Shi Ji She)
Synonym	Achalinus yangdatongi HOU, WANG, GUO, CHEN, YUAN & CHE 2021
Distribution	China (Yunnan) Type locality: Xiaoqiaogou (23.361°N, 104.686°E; 1609 m a.s.l.), Xichou County, Wenshan, Yunnan Province, China.
Reproduction
Types	Holotype. KIZ 034327, adult male, collected by Kai Xu on 15 April 2018.
Diagnosis	Diagnosis: 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.
Comment	Distribution: see Hou et al. 2021: 529 (Fig. 1) for a map.
Etymology	The 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
External links	National Center for Biotechnology Information https://www.facebook.com/groups/stshc/posts/360402249517713 Google images

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