The Complete Mitogenome of the Wood-Feeding Cockroach Cryptocercus meridianus (Blattodea: Cryptocercidae) and Its Phylogenetic Relationship among Cockroach Families.

In this study, the complete mitochondrial genome of was sequenced. The circular mitochondrial genome is 15,322 bp in size and contains 13 protein-coding genes, two ribosomal RNA genes (12S rRNA and 16S rRNA), 22 transfer RNA genes, and one D-loop region. We compare the mitogenome of with that of and . The base composition of the whole genome was 45.20%, 9.74%, 16.06%, and 29.00% for A, G, C, and T, respectively; it shows a high AT content (74.2%), similar to the mitogenomes of and . The protein-coding genes are initiated with typical mitochondrial start codons except for with TTG. The gene order of the mitogenome differs from the typical insect pattern for the translocation of , while the mitogenomes of the other two species, and , are consistent with the typical insect pattern. There are two very long non-coding intergenic regions lying on both sides of the rearranged gene . The phylogenetic relationships were constructed based on the nucleotide sequence of 13 protein-coding genes and two ribosomal RNA genes. The mitogenome of is the first representative of the order Blattodea that demonstrates rearrangement, and it will contribute to the further study of the phylogeny and evolution of the genus and related taxa.