Fig. 5

Signals of introgression between H. roberti and other VCCR clade members (see Fig. 1c for summary interpretation). a BCA analysis using BUCKy using Bayesian sample of trees from 517 loci, showing concordance factors. Higher CF for discordant grouping roberti + clypeatus group than alternatives roberti + viridipes group or roberti + coecatus group suggests introgression. b, d, f ABBA vs. BABA allele patterns counts for Partitioned D statistic tests for introgression between H. roberti and the VCCR clade. * indicates significant difference at 0.05 level after Bonferroni correction. c, e, g Interpretation: Introgression is detected between H. roberti and either the clypeatus group or the coecatus group, but the latter only when the clypeatus group is absent. This ghost lineage effect suggests direction introgression from the clypeatus group into H. roberti. Species not participating in the particular test are greyed