The complete mitochondrial genome of Peirates arcuatus (Stål) is a typical 
double-stranded circular molecule 16,176 bp long with 37 genes usually present 
in animal mitochondrial genomes and a control region. Gene order is identical to 
that of the putative ancestral arrangement of insects and other assassin bugs. 
Thirteen protein-coding genes initiate with ATN codons and mostly terminate with 
TAN codons except for COII and COIII use a single T residue as the termination 
codon. All tRNA sequences can be folded into classic clover-leaf secondary 
structure except that the dihydrouridine (DHU) arm of tRNA(Ser(AGN)) forms a 
simple loop, and their length range from 63 to 69 bp. The control region is 1552 
bp long and includes two complete 118-bp tandem repeats and one partial copy of 
anterior repeat unit.