Calibrated species tree of Rhacophoridae represented by Kurixalus, Orixalus, Romerus and Zhangixalus distributed over East Asia and Southeast Asia. The species tree reconstructed from unlinked 12S rRNA and TYR. The asterisk (*) symbol indicates Kurixalus inexpectatus sp. nov. The highlighted lineages divergence noted with (a–d) and the time estimates are synchronised with datation in Table 6. Biogeography models C and D hypothesised early colonisation pathway of Kurixalus to Taiwan Island and potential glacial-driven refugia to the south-eastern mainland, projected on the Plio-Pleistocene oscillations models of.