The complete mitochondrial genome of Batrachoseps nigriventris (Caudata: Plethodontidae).

Batrachoseps nigriventris was classified in order Caudata, family Plethodontidae. In this study, we obtained the complete mitochondrial genome sequence of B. nigriventris, which was 17 403 bp in length. With a base composition of 33.5%A, 30.9%T, 21.4%C, and 14.2%G, this genome contained 13 protein-coding genes (PCGs), 23 transfer RNA genes (tRNA), 2 ribosomal RNA genes (rRNA), and 1 control region (D-loop) . Phylogenetic analysis was performed using protein-coding genes cox1, combined with other 28 closely related species to assess their phylogenic relationship. This mitochondrial genome sequence will provide a better understanding for B. nigriventris evolution in the future.