A mitochondrial genome phylogeny of termites (Blattodea: Termitoidae): Robust support for interfamilial relationships and molecular synapomorphies define major clades

► A mitochondrial genome phylogeny of termites resolves relationships with high nodal support. ► Base compositional heterogeneity between termites and roaches necessitates removal of third codon positions for accuracy. ► One molecular synapomorphy, an AT-region stem-loop, supports Polyphagidae as sister-group to termites + Cryptocercus. ► A second molecular synapomoprhy, AT-region macrorepeats, supports Heterotermitinae + Termitidae.