Sampling locations and geographic localities mentioned in the article. Numbers correspond to the population numbers indicated in Additional File 1 - Table S1. Black dots indicate populations where individuals of P. hispanicus were sampled and grey dots where individuals of P. algirus were sampled (black and grey dots: populations where individuals of both groups were sampled). Geographic localities mentioned in the article are indicated. Districts are delimited in green, rivers in blue, mountain systems in grey, and cities in red.
Fitze et al. BMC Evolutionary Biology 2011 11:347 doi:10.1186/1471-2148-11-347