A) Map of central/eastern Italian Alps showing the sampling locations for 140 individuals of the P. mnemosyne complex.

Letters show locations with available mtDNA sequences [7,28] (“w” indicates the western mitochondrial clade and “e” the eastern clade). B) Mean value of the ancestry coefficient q in the eastern (mnemosyne) genetic cluster from Structure analysis for each sampling location plotted against its longitude and latitude. In both A and B, dot colors indicate the mean value of the Dimension 1 of the correspondence analysis (CA). The position of the outlier Val di Gares (GAR) sample (see Discussion section) is highlighted in both panels. Map created using Natural Earth (www.naturalearthdata.com); in Public Domain.