Parsimony network and geographic locations of different haplogroups for Wolbachia gro EL. Relationships among groEL haplotypes, group subdivisions, and geographic distribution for the conservative dataset. A. TCS parsimony network for the groEL haplotypes. Each circle shows one haplotype. Solid black circles (nodes) indicate number of nucleotide differences between haplotypes. Circle size represents haplotype frequency. Each branch shows one nucleotide change. Shading highlights different network subdivisions and corresponds to the haplotypes in rounded rectangles. B. Geographic distribution of groEL haplogroups relative to previously defined genetic groups (Figure 1). Small, filled circles indicate the Wolbachia groEL haplogroups represented at each site with shading corresponding to group assignment as in Figure 3A.