Figure 2
From: Evolutionary history of Wolbachia infections in the fire ant Solenopsis invicta
Distribution and prevalence of Wolbachia variants in eleven sampled populations of S. invicta. Each pie diagram shows the proportions of Wolbachia-infected (separately for each variant) and uninfected individuals in each geographic population (sample sizes in parentheses). The native range of S. invicta as currently understood is indicated by green shading and is based on Buren et al. [63], Trager [57], and Pitts [64].