First molecular verification of Dixonius vietnamensis Das, 2004 (Squamata: Gekkonidae) with the description of a new species from Vinh Cuu Nature Reserve, Dong Nai Province, Vietnam

Based on near-topotypic specimens of Dixonius vietnamensisfrom Khanh Hoa Province in southern Vietnam genetic anal-yses showed that the recently described D. taoiis sister to D. vietnamensisand several separate forms exist which previ-ously have been misidentified as D. vietnamensis andD. siamensis. The Dixoniuspopulation from Vinh Cuu Nature Reserve, Dong Nai Province, Vietnam, represents an undescribed species. Dixonius minhlei sp. nov.can be distinguished from its congeners based on the following diagnostic characters: small size (up to 47.5 mm SVL); 7–9 supralabials; 14– 15 rows of keeled tubercles on dorsum; 20–23 ventral scale rows; 7 or 8 precloacal pores in males; a canthal stripe running from rostrum through the eye and terminating at back of head; lateral second pair of postmentals maximum one quarter the size of first pair; dorsum olive gray with more or less discernible brownish olive blotches. This is the sixth species of Dixonius known to occur in Vietnam.

Title: First molecular verification of Dixonius vietnamensis Das, 2004 (Squamata: Gekkonidae) with the description of a new species from Vinh Cuu Nature Reserve, Dong Nai Province, Vietnam
Authors: Ziegler, Thomas
Botov, Andreas
Nguyen, Tao Thien
Keywords: Dixonius vietnamensis
Taxonomy
Molecular phylogeny
Dixonius minhlei sp. nov.
Vietnam
Morphology
Issue Date: 2016
Publisher: H. : ĐHQGHN
Citation: ISIKNOWLEDGE
Abstract: Based on near-topotypic specimens of Dixonius vietnamensisfrom Khanh Hoa Province in southern Vietnam genetic anal-yses showed that the recently described D. taoiis sister to D. vietnamensisand several separate forms exist which previ-ously have been misidentified as D. vietnamensis andD. siamensis. The Dixoniuspopulation from Vinh Cuu Nature Reserve, Dong Nai Province, Vietnam, represents an undescribed species. Dixonius minhlei sp. nov.can be distinguished from its congeners based on the following diagnostic characters: small size (up to 47.5 mm SVL); 7–9 supralabials; 14– 15 rows of keeled tubercles on dorsum; 20–23 ventral scale rows; 7 or 8 precloacal pores in males; a canthal stripe running from rostrum through the eye and terminating at back of head; lateral second pair of postmentals maximum one quarter the size of first pair; dorsum olive gray with more or less discernible brownish olive blotches. This is the sixth species of Dixonius known to occur in Vietnam.
Description: ZOOTAXA Volume: 4136 Issue: 3 Pages: 553-566 ; TNS06417
URI: http://repository.vnu.edu.vn/handle/VNU_123/27299
Appears in Collections:Bài báo của ĐHQGHN trong Web of Science

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