Figure 1

Sampling sites of common lizard across the Italian Alps. Triangles and circles represent locations where Z. v. vivipara and Z. v. carniolica were collected, respectively (according to mtDNA results). Different gray scales indicate the homogeneous genetic groups identified by STRUCTURE analyses and describe the two and five clusters inferred for Z. v. vivipara and Z. v. carniolica, respectively. Lakes are shown in dark gray.