To enrich the genomic data pools of the family Silphidae for subsequent mitogenome-based large-scale phylogenetic study and development of a diverse type of molecular marker (e.g., species identification by restriction fragment length polymorphism and loop-mediated isothermal amplification), which have considerable forensic importance, we sequenced the complete mitogenome of the N. nigricornis for the first time. This sequence was analyzed for mitogenome characteristics, along with a brief comparison to other familial species, and used for phylogenetic analysis within the family Silphidae.