Figure 2: Geographic assessment of population genetic
clustering of S. atlantis and S. hesperis using SNPs.
Structure and TESS results (A) consistently indicate a major genetic
divergence between northern and southern S. hesperis lineages.
Populations of S. hesperis and S. atlantis identified in
the K =6 Structure analysis are plotted as pie charts on the map
in (B) to show correspondence between genetic and geographic structure.
The COI haplotype network for the same specimens (C) depicts a
lack of geographic structure in S. hesperis and haplotype sharing
between S. hesperis and Nevadan S. zerene . Hatches along
the branches in (C) indicate the number of nucleotide differences
between sequences, and haplotype colours correspond to the Structure
clustering and subclustering results in (A). Top right image: S.
atlantis hollandi ; lower left image: S. hesperis beani . The
dorsal wing surface is shown on the left side of each specimen, and the
ventral surface is depicted on the right.