Fig. 2: Population structure, phylogeny, and demographic history of Analcellicampa.

a Sampling sites. The bar charts indicate the species and number of samples collected at each sampling location. Colors correspond to those in (d). b Maximum-likelihood tree depicting the evolutionary relationships among genus Analcellicampa and outgroup. c ADMIXTURE analysis with K = 3, 7 and 8. Colors in each column represent ancestry proportion. d Nucleotide diversity (π), nucleotide differences (dxy) across the six species. The value in each circle represents a measure of nucleotide diversity for each species; values in red on each line indicate pairwise population nucleotide differences between species. e Patterns of LD (linkage disequilibrium) decay across the genome in different geographic populations. r2, Pearson’s correlation coefficient. f Genomic similarity of six species of Analcellicampa to the AD reference genome. Chromosomes are indicated by different colors along the left y axis. Identical score (IS) values are shown for SNPs within each 50-kb window across the genome. g Estimated split times between each species after 50 bootstraps. The widths indicate probability densities. h Dynamic of Ne inferred by PSMC. The vertical lines indicate divergence times corresponding to those shown in (g). The marked pentagrams indicate species fully infected with Wolbachia.