Two new karst-adapted species in the Cyrtodactylus pulchellus group (Reptilia, Gekkonidae) from southern Thailand

By

Termprayoon, Korkhwan
Rujirawan, Attapol
Grismer, Lee
Wood, Perry L., Jr.
Aowphol, Anchalee

Type

Article

Date of Publication

2023

Original Publication

ZooKeys

Volume

1179

Pages

313--352

Subjects

Cyrtodactylus sungaiupe sp. nov , Cyrtodactylus wangkhramensis sp. nov , Morphology , Phylogeny , Southeast Asia , Sundaland , taxonomy , Thai-Malay Peninsula

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/zookeys.1179.109712

 

Abstract

The exploration of unsurveyed areas in southern Thailand discovered two new karst-adapted species, Cyrtodactylus sungaiupesp. nov. and Cyrtodactylus wangkhramensissp. nov., from Thung Wa and La-ngu Districts, Satun Province, respectively. These new species are members of the C. pulchellus group that occur along the Thai-Malay Peninsula. The new species can be distinguished from all other congeners by their key morphological characters and genetic divergence. Morphologically, Cyrtodactylus sungaiupesp. nov. and Cyrtodactylus wangkhramensissp. nov. can be diagnosed from other members by having a combination of differences in body size; degree of dorsal tuberculation; absence of tubercles on ventral surfaces; number of ventral scales, paravertebral tubercles and femoroprecloacal pores in males only; deep precloacal groove only in males; absence of a scattered pattern of white dorsal tubercles; number of dark body bands; and the extent of caudal tubercles on an original tail. Although the two species are sister taxa and have nearly identical morphologies, they are considered to be different species, based on a relatively high uncorrected pairwise genetic divergence of the mitochondrial ND2 gene (6.59–6.89%), statistically significant univariate and multivariate morphological differences (PERMANOVA and ANOVA) and diagnostic characteristics of caudal tuberculation on the original tail. Moreover, Cyrtodactylus sungaiupesp. nov. and Cyrtodactylus wangkhramensissp. nov. are currently restricted to their karstic type localities which may serve as a geographic barrier to dispersal and gene flow.