Taxonomic identity of four groups of (Anura, Ranidae) in Japan revealed by the complete mitochondrial genome sequence analysis.

The Japanese phylogenetically consists of four groups. However, the taxonomic identity of these groups still remains unclear. We determined the complete mitogenome sequences of the four groups of . The mitogenomes were 17,394-17,781 bp in length. The phylogenetic analysis clearly showed that the genus is monophyletic and that the four groups of are separated into two clusters: one cluster represents , the other cluster may represent a different species.