Fig. 2

Phylogenetic tree of the cytb mitochondrial gene of P. humanus (a) projected with the concatenated ftsZ and rpoB (rpoB-2) genes (848 bp) of Candidatus Riesia pediculicola (b), showing the relationship and co-evolution of the endosymbiont dependently on the mitochondrial clades of their host. Phylogenetic inference was conducted in MEGA 7 using the ML method under the Kimura 2-parameter with 1000 bootstrap replicates