Figure 1.

(A). Co-phylogenetic reconciliation analysis for Hawaiian Drosophilidae and two species of invasive mosquitoes and their Wolbachia endosymbionts based on the following cost scheme: co-speciation: 1; duplication: 1; duplication and host switch: 2; loss: 1; failure to diverge: 1. The estimated biological events that best describe the data are depicted on the phylogeny [open circle: co-speciation; closed circle: duplication; closed circle with arrow: duplication and host switch; dashed line: loss]. Red indicates that the event is optimally placed, whereas yellow indicates that another placement exists that is equally valid. (B). A tanglegram depicting the co-phylogenetic relationship between the Hawaiian Drosophilidae and invasive mosquito phylogeny (left) and their Wolbachia endosymbiont phylogeny (right).