首页|Hiding on jagged karst pinnacles:A new microendemic genus and species of a limestone-dwelling agamid lizard(Squamata:Agamidae:Draconinae)from Khammouan Province,Laos

Hiding on jagged karst pinnacles:A new microendemic genus and species of a limestone-dwelling agamid lizard(Squamata:Agamidae:Draconinae)from Khammouan Province,Laos

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We describe a unique new species and genus of agamid lizard from the karstic massifs of Khammouan Province,central Laos.Laodracon carsticola Gen.et sp.nov.is an elusive medium-sized lizard(maximum snout-vent length 101 mm)specifically adapted to life on limestone rocks and pinnacles.To assess the phylogenetic position of the new genus amongst other agamids,we generated DNA sequences from two mitochondrial gene fragments(16S rRNA and ND2)and three nuclear loci(BDNF,RAG1 and c-mos),with a final alignment comprising 7 418 base pairs for 64 agamid species.Phylogenetic analyses unambiguously place the new genus in the mainland Asia subfamily Draconinae,where it forms a clade sister to the genus Diploderma from East Asia and the northern part of Southeast Asia.Morphologically,the new genus is distinguished from all other genera in Draconinae by possessing a notably swollen tail base with enlarged scales on its dorsal and ventral surfaces.Our work provides further evidence that limestone regions of Indochina represent unique"arks of biodiversity"and harbor numerous relict lineages.To date,Laodracon carsticola Gen.et sp.nov.is known from only two adult male specimens and its distribution seems to be restricted to a narrow limestone massif on the border of Khammouan and Bolikhamxai provinces of Laos.Additional studies are required to understand its life history,distribution,and conservation status.

BiodiversityEndemismIndochinaKarstic landscapeLaodracon carsticolaPhylogenySoutheast AsiaTaxonomy

Saly Sitthivong、Peter Brakels、Santi Xayyasith、Nathana?l Maury、Sabira Idiiatullina、Parinya Pawangkhanant、Kai Wang、Tan Van Nguyen、Nikolay A.Poyarkov

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Faculty of Forestry,National University of Laos,Vientiane 01170,Lao PDR

IUCN Laos PDR,Vientiane 01160,Lao PDR

Faculty of Environmental Sciences,National University of Laos,Vientiane 01170,Lao PDR

Chelonian Conservation Center Laos,World Encyclopedia of Herpetofauna,Vientiane 01000,Lao PDR

Department of Vertebrate Zoology,Biological Faculty,Lomonosov Moscow State University,Moscow 119234,Russia

Rabbit in the Moon Foundation(RIM),Suanphueng,Ratchaburi 70180,Thailand

State Key Laboratory of Genetic Resources and Evolution,Kunming Institute of Zoology,Chinese Academy of Sciences,Kunming,Yunnan 650223,China

Southeast Asia Biodiversity Research Institute,Chinese Academy of Sciences,Yezin,Nay Pyi Taw 05282,Myanmar

Institute for Research and Training in Medicine,Biology and Pharmacy,Duy Tan University,Da Nang 550000,Vietnam

College of Medicine & Pharmacy,Duy Tan University,Da Nang 550000,Vietnam

Joint Russian-Vietnamese Tropical Research and Technological Center,Nghia Do,Cau Giay,Hanoi 122000,Vietnam

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Russian Science FoundationNational Natural Science Foundation of ChinaRufford Foundation

22-14-000373213001539897-1

2023

10.24272/j.issn.2095-8137.2023.062

动物学研究
中国科学院昆明动物研究所 中国动物学会

动物学研究

CSTPCDCSCD
影响因子：0.582
ISSN：0254-5853
年,卷(期)：2023.44(6)
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