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

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Higher Taxa	Xenodermidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies
Common Names	E: Tim’s Burrowing Snake
Synonym	Achalinus timi ZIEGLER, NGUYEN, PHAM, NGUYEN, PHAM, VAN SCHINGEN, NGUYEN & LE 2019
Distribution	N Vietnam (Son La) Type locality: forest within the Copia Nature Reserve, near Hua Ty Village (21°20.105’N, 103°35.860’E), Co Ma Commune, Thuan Chau District, Son La Province, northern Vietnam
Reproduction	oviparous (manual imputation, fide Zimin et al. 2022)
Types	Holotype. IEBR A.2018.10 (Field no. PA.180), adult male, collected by A.V. Pham on 12 May 2014 at an elevation of ca. 1470 m above sea level.
Diagnosis	Diagnosis: A species of the genus Achalinus, characterized by a combination of the following characters: 1) maxillary teeth 27; 2) suture between the internasals distinctly longer than that between the prefrontals; 3) loreal fused with prefrontal on each side, with the prefrontal extending towards the supralabials; 4) dorsal scales in 25–25–23 rows, keeled; 5) ventrals 170+1; 6) subcaudals 72, unpaired; 7) a total length of at least 177.9 mm in males (with a tail length of 37.9 mm and a tail/total length ratio of 0.21); 8) dorsum in preservative reddish to greyish brown above, with wide portion of the vertebral region being distinctly darker; the lower head sides are somewhat paler; infralabial and chin shields light greyish brown; venter greyish cream, with the underside of the tail being somewhat darker and the chin region somewhat paler. Additional details (1515 characters) are available for collaborators and contributors. Please contact us for details.
Comment	Habitat: the holotype was a road kill specimen. The surrounding habitat was secondary evergreen forest. Abundance: only known from a single specimen (2023).
Etymology	Named after Tim N. Ziegler.
References	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 AV, Ziegler T, Nguyen TQ 2020. New records and an updated checklist of snakes from Son La Province, Vietnam. Biodiversity Data Journal 8: e52779 - get paper here 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
External links	National Center for Biotechnology Information https://www.facebook.com/groups/stshc/posts/296344462590159 Google images

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