Fig 1. Maps illustrating (A) the principal sampling locations of the study (location numbers as in Table 1) as well as the occurrence of G. teuchis (red triangle), G. trutta (blue square), or both species (green circle) in a given location, and (B) depicting the geographic distribution of the five mtDNA clades (A-E, see Fig 2) of G. teuchis throughout the study area.

The enlarged boxes represent sampling locations or mtDNA clade data in Austria and Slovenia.