Phylogeography of Dasia Gray, 1830 (Reptilia: Scincidae), with the description of a new species from southern India Author Vasudevan, Karthikeyan Author Silva, Anslem De Author Kar, Niladri Bhusan Author Naniwadekar, Rohit Author Lalremruata, Albert Author Prasoona, Rebekah Author Aggarwal, Ramesh K text Zootaxa 2012 3233 37 51 journal article 45244 10.5281/zenodo.211627 58f33d6c-c5d0-4108-b181-2f5799177bff 1175-5326 211627 Phylogeny of Dasia The heuristic search of the MP analysis produced one most parsimonious tree with a tree length of 956 (CI = 0.46, HI = 0.53 and RI = 0.50). The GTR+G+I model was selected for the data Using MODELTEST ( Posada & Crandall 1998 ). The ML analysis for combined data revealed a single tree with a negative log-likelihood score (–ln L ) of - 5411.14. The branching pattern of the ML, MP and the Bayesian trees were identical (fig. 7). Bayesian analyses provided higher values for posterior probabilities as support for the node, when compared with bootstrap supports from ML and MP analyses. FIGURE 7. Phylogenetic trees based on the combined mitochondrial 12S and 16S rDNA sequence (954 bp) showing the genetic relationship of the Dasia johnsinghi sp. nov. relative to other Dasia species: (a) Maximum Likelihood (b) Maximum Parsimony and (c) Bayesian tree. Values at the nodes are bootstrap support values or posterior probabilities obtained in ML/MP and Bayesian analysis, respectively. All trees are rooted using Lipina vittigera as an outgroup. All the analyses supported monophyly of the genus Dasia . The South India and Sri Lanka clade was monophyletic, but the Southeast Asian Dasia were polyphyletic. The new species identified through this study ( D. johnsinghi sp. nov. ) was distinct from D. haliana and D. subcaeruleum . The support for the node distinguishing the two species were significant (≥ 95%) in all the analyses (ML, MP and Bayesian). The closest relative of D. johnsinghi was D. haliana from Sri Lanka . In the Bayesian analysis, D. grisea was basal to all the other Dasia species. The African ( Trachylepis ) and the Asian ( Dasia , Eutropis ) clades were different and were deeply divided. Within the genus Dasia , interspecific distance varied from 0.03–0.09. In the case of D. olivacea from Peninsular Malaysia and Great Nicobar Island , the intraspecific distance was 0.03, which overlapped with known interspecific distances.