Fig. 2From: Diversity and distribution of Wolbachia in relation to geography, host plant affiliation and life cycle of a heterogonic gall waspBayesian phylogenetic tree based on sequencing of the mtDNA COI gene for 463 Belonocnema treatae sampled from 23 populations. Branch colors represent geographic separation between populations from West (light blue; populations 1–8) and East (orange; populations 10–23) and population 9 (grey). The outside bar represents the host plant affiliation for each collection site (red = Q. fusiformis, green = Q. geminata and blue = Q. virginiana). The different dots represent the infection status of each single individual with white = uninfected, yellow = wTre1, blue = wTre2, red = wTre3, grey = wTre4. Individuals with two or three dots indicate infection by more than one Wolbachia strainBack to article page