Figure 7
Synthetic representation of the phylogenetic structure of E. quimperiana populations from Brittany, Spain and the Basque Country. Ha and Cn: outgroups corresponding respectively to Cantareus aspersus and Cepaea nemoralis. The scaled bar under the trees represents a 0.1% sequence divergence. Genetically sustained refugia during the glaciations are localized in Picos de Europa in Spain (RPE) and the Basque Country in the Pyrenees (RPY), while a putative third refugia during the last glaciations may be hypothesized in Brittany (RB?). The localized distribution of the related species Norelona pyrenaica is specified (eastern Pyrenees).