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Opisthotropis voquyi ZIEGLER, DAVID, ZIEGLER, PHAM, NGUYEN & LE, 2018

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Higher TaxaColubridae (Natricinae), Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Common NamesE: Vo Quy’s Mountain Stream Keelback
Vietnamese: Rắn trán võ quý 
SynonymOpisthotropis voquyi ZIEGLER, DAVID, ZIEGLER, PHAM, NGUYEN & LE 2018 
DistributionVietnam (Bac Giang Province)

Type locality: Tay Yen Tu Nature Reserve, Bac Giang Province, 437 m elevation, Vietnam  
TypesHolotype: IEBR 4326 (Field No. TYT.2013.4), an adult male, collected by Cuong The Pham et al. on 14 June 2013 (Figs. 6–8).
Paratypes. VNMN 06315 [Field No. TYT 2013.1], male, collected by Cuong The Pham et al. in June 2013;
VNMN 06316 [Field No. BG 2015.13], female, collected by Cuong The Pham et al. on 17 May 2015; IEBR 4327
[Field No. BG 2015.33], female, collected by Cuong The Pham et al. on 22 May 2015; IEBR 4328 [Field No. BG
2015.34], female, collected by Cuong The Pham et al. on 22 May 2015; ZFMK 100819 [Field No. BG 2015.35],
female, collected by Cuong The Pham et al. on 22 May 2015; ZFMK 100820 [Field No. TYT 2014.11], female,
collected by Hang An Thi in May 2014, all paratypes same locality data as the holotype (Figs. 8–10). 
DiagnosisDiagnosis: A species of the genus Opisthotropis, characterized by a combination of the following characters: (1) internasal not in contact with loreal; (2) one preocular; (3) usually two postoculars; (4) one anterior temporal; (5) one posterior temporal; (6) 7 or 8, rarely 9 supralabials; (7) 25 maxillary teeth; (8) subcaudals 74–86; (9) 15 dorsal scale rows at neck, at midbody and before vent; (10) body scales smooth or only with few faint keels; (11) dorsal scales being grey, greyish-brown or brown in preservative, posteriorly more or less edged with pale greyishbrown. 
CommentSympatry: Cyclophiops multicinctus, Opisthotropis lateralis, Sinonatrix percarinata, Gekko palmatus, Sphenomorphus cryptotis, and Shinisaurus crocodilurus vietnamensis 
EtymologyThe specific epithet is a noun in the genitive case. This species is named in honour of Professor Doctor Vo Quy of Vietnam National University, Hanoi, who passed away on 10 January 2017, and who played a pioneering role in nature conservation in Vietnam. He inspired later generations of conservation biologists, including authors of this study. 
  • ZIEGLER, THOMAS; PATRICK DAVID, TIM N. ZIEGLER, CUONG T. PHAM, TRUONG Q. NGUYEN, MINH D. LE 2018. Morphological and molecular review of Jacob’s Mountain Stream Keelback Opisthotropis jacobi Angel & Bourret, 1933 (Squamata: Natricidae) with description of a sibling species from northern Vietnam. Zootaxa 4374 (4): 476-496 - get paper here
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