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Achalinus juliani 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: Julian’s Burrowing Snake 
SynonymAchalinus juliani ZIEGLER, NGUYEN, PHAM, NGUYEN, PHAM, VAN SCHINGEN, NGUYEN & LE 2019 
DistributionN Vietnam (Cao Bang)

Type locality: forest of Duc Quang Commune (22°43.084’N, 106°39.653’E, at an elevation of 477 m above sea level), Ha Lang District, Cao Bang Province, northern Vietnam  
Reproductionoviparous (manual imputation, fide Zimin et al. 2022) 
TypesHolotype. IEBR A.2018.8 (Field no. CB 2014.18), an adult male, collected by C.T. Pham on 14 June 2014.
Paratypes. IEBR A.2018.9 (Field no. CB 2014.19), a female, from Phia Oac-Phia Den National Park (22°36.147’N, 105°52.726’E, at an elevation of 1461 m above sea level), Nguyen Binh District, Cao Bang Province, northern Vietnam, collected by T.H. Pham on 24 May 2014; VNMN 06924 (Field no. TAO 766), an adult male, from forest of Thanh Cong Commune within Phia Oac-Phia Den National Park (22°60.556’N, 105°87.530’E, at an elevation of 1590 m above sea level), Nguyen Binh District, Cao Bang Province, northern Vietnam, collected by T.T. Nguyen on 10 May 2010. 
DiagnosisDiagnosis: A species of the genus Achalinus, characterized by a combination of the following characters: 1) maxillary teeth 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 6; 6) mental separated from anterior chin shields; 7) two elongated anterior temporals, in contact with eye, and two posterior temporals; 8) dorsal scales in 25–23–23 rows, keeled; 9) ventrals 173–179; 10) subcaudals 77–91, unpaired; 11) a total length of at least 413 mm (with a maximum tail length of 109 mm, and a tail/total length ratio of 0.22–0.37); 12) dorsum in preservative reddish to greyish brown above, the lower and posterior head sides paler; venter greyish cream, with the underside of the tail being somewhat darker.


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CommentHabitat: lowland forest and limestone karst forest. 
EtymologyNamed after Julian L. 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
  • 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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