Open AccessAcanthosaura meridiona sp. nov. (Squamata: Agamidae), a new short-horned lizard from southern Thailand
Author(s) -
Poramad Trivalairat
Publication year - 2022
Publication title -
herpetological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.409
H-Index - 38
eISSN - 2634-1379
pISSN - 0268-0130
DOI - 10.33256/32.1.3450
Subject(s) - squamata , agamidae , biology , lizard , zoology , genus , sister group , phylogenetic tree , clade , biochemistry , gene
A new short – horned lizard species of the genus Acanthosaura from southern Thailand, is described herein. The species was previously recognised as Acanthosaura crucigera and has been reported to present a wide distribution across mainland south-east Asia. The combination of modern morphological studies of Acanthosaura meridiona sp. nov. allows its separation from closely related species A. crucigera, on the basis of presenting more nuchal scales, more scales between diastema, more scales bordering rostral scales and more midline ventral scales. Mitochondrial DNA analysis also indicated a sister relationship between A. meridiona sp. nov. and A. crucigera with a 100 % probability according to Bayesian and maximum – likelihood analyses. The pairwise distance between A. meridiona sp. nov. and A. crucigera ranges from 9.9 – 11.1 %, while the distance between A. meridiona populations ranges from 0 – 0.9 %. This new discovery contributes to the redescription of the distribution of A. crucigera under Kra Isthmus and its replacement by A. meridiona sp. nov.