3.2. Phylogenetic relationships
Phylogenies inferred from both tandem amino acid sequences and DNA sequences of the 12 mt protein-encoding genes demonstrated that T. caixuepengi in a monophyletic group with T. pisiformis andT. laticollis , with the closest genetic relative being T. pisiformis ; T. tianguangfui was also found in a monophyletic group with T. crassiceps , T. twitchelli and T. martis , and has the far genetic relative with T. caixuepengi(Fig. 2).