Universität zu Köln

Ziegler, Thomas, David, Patrick, Ziegler, Tim N., Pham, Cuong T., Nguyen, Truong Q. and Le, Minh D. (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). S. 476 - 497. AUCKLAND: MAGNOLIA PRESS. ISSN 1175-5334

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Abstract

New morphological data including hemipenis morphology is provided for Opisthotropis jacobi, a poorly known Mountain Stream Keelback from Vietnam and China, based on three newly collected individuals from Sa Pa (Lao Cai Province) and Tam Dao (Vinh Phuc Province) in northern Vietnam. In addition, morphological data from Vietnam is summarized based on the original description (Angel & Bourret 1933), on the overview book by Bourret (1936) and on a number of smaller, little-known contributions by the latter author along with re-examination of specimens deposited in the herpetological collection of the Museum national d'Histoire naturelle, Paris. We also sequenced a fragment of the mitochondrial cytochrome b from the newly collected specimens of the Jacob's Mountain Stream Keelback and performed molecular analyses of new and existing data of the genus. A recently discovered Opisthotropis population from Tay Yen Tu Nature Reserve in Bac Giang Province, northern Vietnam, which at the first glance resembled O. jacobi morphologically, is shown to diverge both genetically and morphologically from the existing species and is herein described as a new species. Opisthotropis voquyi sp. nov. is characterized by the combination of the following characters: internasal not in contact with loreal; one preocular; usually two postoculars; one anterior temporal; one posterior temporal; 7 or 8, rarely 9 supralabials; 25 maxillary teeth; subcaudals 74-86; 15 dorsal scale rows at neck, at midbody and before vent; body scales smooth or only with few faint keels; and dorsal scales being greyish, greyish-brown or brown in preservative, posteriorly more or less edged with pale greyish-brown. Phylogenetically, the new species is supported as a sister taxon to O. jacobi, but the two taxa are approximately 10% divergent based on cytochrome b data.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Ziegler, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED David, Patrick UNSPECIFIED UNSPECIFIED UNSPECIFIED Ziegler, Tim N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pham, Cuong T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nguyen, Truong Q. UNSPECIFIED UNSPECIFIED UNSPECIFIED Le, Minh D. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-198621
DOI:	10.11646/zootaxa.4374.4.2
Journal or Publication Title:	Zootaxa
Volume:	4374
Number:	4
Page Range:	S. 476 - 497
Date:	2018
Publisher:	MAGNOLIA PRESS
Place of Publication:	AUCKLAND
ISSN:	1175-5334
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GENUS OPISTHOTROPIS; COLUBRIDAE NATRICINAE; TAM DAO; PROVINCE; GUNTHER; MITOCHONDRIAL; MODEL; SNAKE Multiple languages Zoology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19862