Figure 4 in An extended mtDNA phylogeography for the alpine newt illuminates the provenance of introduced populations

Figure 4. Nucleotide diversity (π) across the natural distribution range of the alpine newt (Ichthyosaura alpestris) for the main mtDNA clades and at country-level, based on 651 bp of the mtDNA gene ND4. N/a means π could not be established because only a single individual was available. Background colour reflects the rough natural distribution of the mtDNA clades. Further details can be found in supplementary table S3.