Fig. 3

Analysis of differentiation between closely related species pairs using the software STRUCTURE based on genomic SNPs obtained through RADseq and assuming two (top) or three (bottom) inferred clusters. Below the plots the geographic origin of samples is indicates in latitude and longitude coordinates. a P. breviauda / P. guntheri species-pair differentiation inferred from a total of 2466 SNPs. b P. ramsayi / P.wiltoni species-pair differentiation inferred from a total of 3458 SNPs. c L. kempi / L. squamifrons species-pair differentiation inferred from a total of 999 SNPs