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Teynie, Alexandre, David, Patrick, Lottier, Anne and Vidal, Nicolas (2015). A new genus and species of xenodermatid snake (Squamata: Caenophidia: Xenodermatidae) from northern Lao People's Democratic Republic. Zootaxa, 3926 (4). S. 523 - 541. AUCKLAND: MAGNOLIA PRESS. ISSN 1175-5334

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Abstract

A male snake collected in Louangphabang Province and a second specimen observed in Houaphan Province, North Laos, share morphological characters with the Asian genus Fimbrios Smith, 1921, including erected edges on the first supra-and infralabial scales, but differ in the following morphological characters: fewer dorsal scale rows (25-27 vs. 30-33), fewer maxillary teeth (27 vs. 30-35), posterior teeth progressively slightly enlarged, and especially the correspondence of two dorsal scale rows per ventral plate throughout the body (i.e. the first dorsal scale row made of a small scale above the fore part of a ventral, followed by a much larger scale above its hind part), a condition known only in Xenodermus Reinhardt, 1836. As the Laotian specimens differ in morphological characters from other genera and species in the family Xenodermatidae, and on the basis of molecular analyses showing a large genetic divergence from the genus Fimbrios (pdistance >= 14.7 %, mitochondrial COI gene), we place these specimens in a new genus, Parafimbrios gen. nov., and describe them as a new species, Parafimbrios lao sp. nov. Besides the characters mentioned above, the new species is diagnosed by a combination of the following ones: small, strongly keeled dorsal scales; rostral and first four supra-and infralabials with raised, erected edges; horizontal tissue ridges above the rostral; loreal single, large, elongate; ventral scales 177-189; subcaudals 55-56, undivided; dorsal colour purplish-grey, neck with a broad, very pale grey collar reaching downwards the pale grey colour of the venter. The morphological characters of the new genus are compared with those of the genera Fimbrios Smith, 1921, Xenodermus Reinhardt, 1836, Stoliczkaia Jerdon, 1870, Achalinus Peters, 1869, and Xylophis Beddome, 1878. A key to the genera Achalinus, Fimbrios and Parafimbrios gen. nov. is provided. Parafimbrios laos spec. nov. is the 111 th snake species currently recorded from Laos.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Teynie, Alexandre UNSPECIFIED UNSPECIFIED UNSPECIFIED David, Patrick UNSPECIFIED UNSPECIFIED UNSPECIFIED Lottier, Anne UNSPECIFIED UNSPECIFIED UNSPECIFIED Vidal, Nicolas UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-405045
DOI:	10.11646/zootaxa.3926.4.4
Journal or Publication Title:	Zootaxa
Volume:	3926
Number:	4
Page Range:	S. 523 - 541
Date:	2015
Publisher:	MAGNOLIA PRESS
Place of Publication:	AUCKLAND
ISSN:	1175-5334
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MOLECULAR PHYLOGENY; CLASSIFICATION; SYSTEMATICS; COLUBRIDAE; SERPENTES; GUNTHER; FAUNA Multiple languages Zoology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/40504