Figure legends
Figure 1. From top to bottom and right to left: location of sampling populations, theoretical straight-line dispersal route following valley bottoms between them, altitude profile of this route, and the position of both populations and dispersal route (means and SDs) in an environmental gradient described in detail elsewhere (Llanos-Garrido et al.2021). These environmental changes are based on an environmental PCA that summarizes BIOCLIM variables on temperature and humidity across all the species’ range (annual mean temperature, maximum temperature of the warmest month, mean temperature of the warmest quarter, and annual precipitation).
Figure 2. Size differences between males with sexual ornamentation and those without it in Navacerrada (mean ± IC95).
Figure 3. Probability of assignment to groups generated by Admixture for the model with two groups (K=2). On the left, CV-errors for each of the models analyzed; the most credible model is the one that includes only one group (K=1).
Figure 1.