Concatenated phylogenetic tree (ML, unrooted) based on Wolbachia sequences of three protein-coding genes (gltA, ftsZ, and groEL) (1,616 bp). Strains are characterized by the names of their host species. ML bootstrap values (top numbers, in boldface) based on 100 replicates and Bayesian posterior probabilities (bottom numbers) are depicted (only values larger than 50 are indicated). Values for recently diverged taxa within supergroups are sometimes excluded for clarity of presentation. The bar indicates a branch length of 10% likelihood distance.