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Abstract
The mitochondrial genome of a flat bug, Brachyrhynchus hsiaoi (Blöte), is a typical circular DNA molecule of 15,250 bp with 37 genes and 70.4% A + T content. The gene order is different from that of the putative ancestral arrangement of insects with a tRNA gene rearrangement, trnQ-trnI. This rearrangement has been found in other sequenced flat bugs and is likely synapomorphic for the Aradidae or some subgroup within this family. Ten protein-coding genes start with ATN codon and others use TTG. All the 22 tRNAs, ranging from 61 to 70 bp, have the clover-leaf structure except for the dihydrouridine (DHU) arm of trnS1 forms a simple loop. The sizes of the large and small ribosomal RNA genes are 1245 and 808 bp, respectively. The control region is located between rrnS and trnQ with 703 bp in length and 69.8% A + T content.
Declaration of interest
Funding for this study was supported by grants from the National Natural Science Foundation of China (No. 31372229), the National Basic Research Program of China (No. 2013CB127600) and the Special Fund for Scientific Research (No. 2012FY111100) for WZC; and the China Postdoctoral Science Foundation (No. 2013M540167) and the Fundamental Research Funds for the Central Universities (2014BH021) for HL. All authors have read and approved the final manuscript. The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.