(a) Maximum likelihood phylogeny, based on concatenated MLST genes, showing the relationships between the five Wolbachia strains for which genomes are available (w Mel, w Ri, w Pip, w Bm and w Bol1 -b) and the two other strains known from H. bolina, w Bol1-a and w Bol2. (b) A Neighbor-Net phylogenetic network based on a concatenated alignment of 654 core genes from the five complete genomes. Conflicting phylogenetic signals in the data are represented as boxes or parallelograms in the network. Very narrow boxes are present along the internal axes of the network, indicating that conflicting signal is present but minor in these genes. The large grey circle contains an expanded representation of the region of the network contained within the smaller grey circle, to make the narrow boxes visible.