Sampling sites of <i>Rana</i> species used in this study.

<p>Numbers correspond with the species name list in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0175113#pone.0175113.t001" target="_blank">Table 1</a>. Contemporary distribution ranges of South Chinese brown frogs are divided into four clearly-defined areas within South China: I, Mount Maoershan; II, Japan; III, Middle to South Hengduan Mountains; and IV, low-altitude areas of South China. Elevation information was downloaded from STRM 90m Digital Elevation Data at <a href="http://srtm.csi.cgiar.org/" target="_blank">http://srtm.csi.cgiar.org/</a>.