Figure 2. Population structure of Hogna maderiana andH. insularum species. a) Discriminant analysis of principal components (DAPC) for 50 specimens using 865 SNPs set. The axes represent the first two Linear Discriminants (LD). Dots represent individuals, and the clusters are presented in different colours.b) Population structure analysis of 50 specimens inferred using STRUCTURE software based on 865 SNPs for K = 2 and K=3. Each individual is represented by a horizontal bar proportionally coloured according to the probability of assignment to each cluster. c) Co-ancestry matrix based on fineRADstructure analysis of ddRAD-seq loci. The dendogram depicts clustering of individual samples based on the pairwise matrix of co-ancestry coefficients. Pairwise coefficients of co-ancestry are colour-coded from low (yellow) to high (blue) according to the scale shown on the right. Square black box demarcations identify individuals showing higher co-ancestry.