Fig. 2 a in Phylogeographic structure suggests environmental gradient speciation in a montane frog from the northern Andes of Colombia

Fig. 2 a Geographic distribution of genetic sampling including the phylogenetic neighborhood of Pristimantis viejas. Color in symbols match lineages depicted in Fig. 1. b Altitudinal distribution across the latitudinal gradient of the two recovered lineages within the nominal species P. viejas. Red dots denote records from lowland lineage and