Rearrangement events
By comparing the composition and structure of the mtgenomes of these 90 Tenebrionoidea species, a total of seven Tenebrionoidea species were found to have gene rearrangement events. These rearrangement events occurr in the three different families Lagriidae, Mordellidae and Pyrochroidae (Fig. 3). In others families, the gene order of the mtgenome is exactly the same as that of drosophilid . The tRNA genes have the highest frequency of rearrangement (trnW-trnC-trnYand trnA-trnR-trnN-trnS-trnE-trnF gene cluster), followed by protein coding genes. The first one is found in thetrnW-trnC-trnY gene cluster, and shuffling of trnW gene and trnC gene occurs in three species of Schizotus pectinicornis (Pyrochroidae), Pyrochroidae sp. (Pyrochroidae) and Anisostira rugipennis (Lagriidae). The second one in theA. rugipennis of Lagriidae, trnD and ATP8transposition to the upstream of NAD2 , which is the first rearrangement event of protein coding genes found in the family Lagriidae. The last one is found in thetrnA-trnR-trnN-trnS-trnE-trnF gene cluster, and shuffling oftrnR gene and trnN gene occurs in four species of the family Mordellidae: Mordellidae sp., Mordellochroa milleri , Mordella atrata and Tomoxia bucephala .