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Issue: Vol. 5437 No. 2: 12 Apr. 2024
Type: Article
Published: 2024-04-12
DOI: 10.11646/zootaxa.5437.2.2
Page range: 193-222
Abstract views: 30
PDF downloaded: 0

A new species of the Cyrtodactylus brevipalmatus group (Squamata: Gekkonidae) from Phuket Island, Thailand with a discussion of the group’s potential biogeography

Herpetology Laboratory; Department of Biology; La Sierra University; 4500 Riverwalk Parkway; Riverside; California 92505; USA. Department of Herpetology; San Diego Natural History Museum; PO Box 121390; San Diego; California; 92112; USA. Institute for Tropical Biology and Conservation; Universiti Malaysia Sabah; Kota Kinabalu; Malaysia.
Division of Fishery; School of Agriculture and Natural Resources; University of Phayao; Phayao; Thailand.
Joint Vietnam - Russia Tropical Science and Technology Research Centre; 63 Nguyen Van Huyen Road; Nghia Do; Cau Giay; Hanoi; Vietnam
Department of Vertebrate Zoology; Lomonosov Moscow State University; Leninskiye Gory; GSP–1; Moscow 119991; Russia.
Zoological Museum; Moscow State University; Moscow; 2 Bolshaya Nikitskaya St.; Moscow 125009; Russia
Division of Fishery; School of Agriculture and Natural Resources; University of Phayao; Phayao; Thailand
Joint Vietnam - Russia Tropical Science and Technology Research Centre; 63 Nguyen Van Huyen Road; Nghia Do; Cau Giay; Hanoi; Vietnam. Department of Vertebrate Zoology; Lomonosov Moscow State University; Leninskiye Gory; GSP–1; Moscow 119991; Russia. Zoological Museum; Moscow State University; Moscow; 2 Bolshaya Nikitskaya St.; Moscow 125009; Russia
Reptilia Indochina phylogeny integrative taxonomy gecko ND2 BioGeoBEArS

Abstract

Model based integrative analyses supports the recognition of a new species of the Cyrtodactylus brevipalmatus group from Phuket Island, Thailand. Cyrtodactylus thalang sp. nov. is most closely related to the sister species C. brevipalmatus from the Thai-Malay Peninsula and C. cf. brevipalmatus from Langkawi Island, Kedah State, Peninsular Malaysia. Based on the mitochondrial gene ND2, C. thalang sp. nov. bears an uncorrected pairwise sequence divergence of 14.7% and 15.1% from C. cf. brevipalmatus and C. brevipalmatus, respectively, significantly different (p<0.05) mean values of meristic and morphometric characters, and discrete categorical morphological differences. A multiple factor analysis morphospatially statistically placed C. thalang sp. nov. well outside all other species of the brevipalmatus group. The BAYAREALIKE model of a BioGeoBEARS analysis indicated the origin of the brevipalmatus group was in western Indochina with subsequent south to north speciation along the Tenasserim Mountains followed by a west to east invasion of northern Thailand, Laos, and northwestern Vietnam northeast of the Chao Phraya Basin and north of the Khorat Plateau.

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