Map showing ranges and localities of three <i>Triturus</i> species in SE Europe and adjacent Asia.

<p>The ranges shown by light shading reflect nuDNA composition, whereas the localities shown by dots reflect the observed mtDNA type. In part of their ranges both <i>T. macedonicus</i> and the candidate species possess mtDNA derived from <i>T. ivanbureschi </i><a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0095504#pone.0095504-Wielstra6" target="_blank">[22]</a>, <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0095504#pone.0095504-Wielstra8" target="_blank">[36]</a>. Five range sections are recognized: range section <b>A</b> where <i>T. macedonicus</i> possesses species-specific mtDNA, range section <b>B</b> where <i>T. macedonicus</i> possesses introgressed mtDNA, range section <b>C</b> where <i>T. ivanbureschi</i> possesses species-specific mtDNA, range section <b>D</b> where the candidate species possesses introgressed mtDNA, and range section <b>E</b> where the candidate species possesses species-specific mtDNA.