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Achalinus emilyae ZIEGLER, NGUYEN, PHAM, NGUYEN, PHAM, VAN SCHINGEN, NGUYEN & LE, 2019

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Higher TaxaXenodermidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Emily’s Burrowing Snake
Chinese: 越北脊蛇 (Pinyin: Yue Bei Ji She) 
SynonymAchalinus emilyae ZIEGLER, NGUYEN, PHAM, NGUYEN, PHAM, VAN SCHINGEN, NGUYEN & LE 2019 
DistributionVietnam (Quang Ninh), China (Guangxi Zhuang A. R.)

Type locality: Dong Son-Ky Thuong Nature Reserve (21°10.15’N, 107°9.58’E, at an elevation of 348.5 m above sea level), Hoanh Bo District, Quang Ninh Province, Vietnam  
Reproductionoviparous (manual imputation, fide Zimin et al. 2022) 
TypesHolotype. IEBR 4465 (Field no. 5/2016 KT 10), a female, collected by M. van Schingen and D.K.T. Pham on 5 May 2016.
Paratype. VNMN 1334, an adult female, from Suoi Tuyen, Bac Giang Province (at an elevation between 320 and 400 m above sea level), collected by T. Ziegler and T. T. Nguyen on 24 June 2010 (listed as A. rufescens in Hecht et al. 2013: 547–548). 
DiagnosisDiagnosis: A species of the genus Achalinus, characterized by a combination of the following characters: 1) maxillary teeth 27 or 28; 2) suture between internasals distinctly longer than that between the prefrontals; 3) internasal not fused to prefrontal; 4) loreal not fused with prefrontal; 5) infralabials 5; 6) mental separated from anterior chin shields; 7) two anterior temporals, only the upper one in contact with eye, and two posterior temporals; 8) dorsal scales in 23–23–23 rows, keeled; 9) ventrals in females 157–161; 10) subcaudals in females 63, unpaired; 11) a total length of at least 519.5 mm (with a maximum tail length of 95.1 mm, and a tail/total length ratio of 0.18 in females); 12) dorsum iridescent pale yellowish brown with a dark longitudinal mid-dorsal stripe.


Additional details (3991 characters) are available for collaborators and contributors. Please contact us for details. 
CommentHabitat: The holotype was found at night (22:24) nearby a forest stream. The paratype was likewise found at night (ca. 23:00) on a forest path nearby a stream.

Distribution: see Hou et al. 2021: 529 (Fig. 1) for a map. 
EtymologyNamed after Emily L. Ziegler. 
References
  • HA, N. V., ZIEGLER, T., SY, T. D., LE, M. D., NGUYEN, T. Q., & LUU, V. Q. 2022. A new species of the genus Achalinus (Squamata: Xenodermidae) from Son La Province, Vietnam. Zootaxa 5168 (3): 375-387 - get paper here
  • 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
  • Kwet, A. 2020. Liste der im Jahr 2019 neubeschriebenen Reptilien. Elaphe 2020 (3): 44-67
  • 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
  • PHAM, A. N. H. VAN ; LE, M. D., NGO, H. T., ONG, A. V., ZIEGLER, T., & NGUYEN, T. Q. 2023. Achalinus quangi, a new odd-scaled snake species from Vietnam. Zootaxa 5270 (1): 48-66 - 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
  • Ziegler, Thomas; & Truong Quang Nguyen 2019. HERPETOLOGICAL RESEARCH AND CONSERVATION IN VIETNAM AND LAOS IN COMPLIANCE WITH THE ONE PLAN APPROACH. Proc. 4th Nat Sci Conf Amph Rept Vietnam 17-26
  • ZIEGLER, THOMAS; TRUONG QUANG NGUYEN, CUONG THE PHAM, TAO THIEN NGUYEN, ANH VAN PHAM, MONA VAN SCHINGEN, THAM THI NGUYEN, MINH DUC LE 2019. Three new species of the snake genus Achalinus from Vietnam (Squamata: Xenodermatidae). Zootaxa 4590 (2): 249-269 - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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