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Achalinus quangi PHAM, PHAM, LE, NGO, ONG, ZIEGLER & NGUYEN, 2023

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Higher TaxaXenodermidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Quang’s Odd-Scaled Snake
Vietnamese: Rắn xe điếu quang 
SynonymAchalinus quangi PHAM, PHAM, LE, NGO, ONG, ZIEGLER & NGUYEN 2023: 51 
DistributionVietnam (Son La)

Type locality: forest near kieng Village (21°06’51.4”N, 104°47’55.1”E, WGS84, at an elevation of 690 m asl.), Muong Do Commune, Phu Yen District, Son La Province, Vietnam  
Reproduction 
TypesHolotype. ZVNU.2022.08 (Field number MD.2015.113), adult male, collected by H.V. Tu, C.k.P kham, and A.V. Pham on 27 August 2015.
Paratypes. IEBR R.5001 (Field number SL.2016.429), adult female collected by A.V. Pham, T.Q.L. Hoang, S.V. Cao, and C.V. Cao on 26 October 2016 in the forest near Cai Village (21°06’23.2”N, 104°48’02.2”E, at an elevation of 850 m asl.), Muong Bang Commune, Phu Yen District, Son La Province, Vietnam. IEBR R.5002 (Field number PHLN 057), adult male, collected by C.T. Pham, A. Dogra, and L. Nemes on 4 July 2012 in the evergreen forest near Yen Commune (20°29’23.7”N, 104°53’21.0”E, at an elevation of 399 m asl.) within Pu Hu Nature Reserve, Quan Hoa District, Thanh Hoa Province, Vietnam. IEBR R.5003 (Field number HDV.2404), adult female, collected by Q.X. Hoang on 28 April 2016 in the forest near Chau khe Commune within Pu Mat National Park (19°01’28.4”N, 104°43’26.0”E, at an elevation of 569 m asl.), Con Cuong District, Nghe An Province, Vietnam. ZFMk 81438 (Field number TZ ‘98/58), subadult collected in Chin Xai region of ke Go Nature Reserve, Ha Tinh Province, on 12 September 1998 by T. Ziegler, at an elevation of 569 m asl (see Ziegler 2002). 
DiagnosisDiagnosis. The new species can be distinguished from other members of the genus Achalinus by a combination of the following characteristics: (1) maxillary teeth 27–29; (2) suture between the internasals distinctly longer than that between the prefrontals; (3) loreal not fused with prefrontal, extending from the nasal to the eye; (4) supralabials six; (5) infralabials five; (6) postocular absent, temporals 2+2, only the upper one broadly in contact with eye; (7) dorsal scales in 25(23)–23–23(21) rows, keeled; (8) ventrals 139–141 in males, 141–154 in females; (9) subcaudals 75–84 in males, 69 in the female, unpaired entirely; (10) cloacal entire; (11) dorsum reddish brown to brown. (Pham et al. 2023)


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Comment 
EtymologyNamed after Assoc. Prof. Dr. Quang Xuan Hoang, a colleague and friend of the authors from Vinh University, Nghe An Province, Vietnam to honour his contributions to the herpetological research in Vietnam. 
References
  • 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
  • Ziegler, Thomas 2023. Die Amphibien und Reptilien eines Tieflandfeuchtwald- Schutzgebietes in Vietnam“ – mehr als zwei Jahrzehnte danach. Elaphe 2023 (6): 36-51
 
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