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Tu Yuezheng,Lin Aili,Jiang Yunlan,Liu Xingyue 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.4
The dobsonfly genus Neoneuromus van der Weele, 1909 represents one of the megalopteran lineages with large body-size, and comprises 13 species all endemic to the Oriental region. In the present study, the mitochondrial genomes (mitogenomes) of 12 species of this genus were determined and analyzed for the first time. The mitogenome of the genus-type, Neoneuromus fenestralis (McLachlan, 1869), as a representative of these conge neric species, is herein described in detail. All of the mitogenomes of Neoneuromus are composed of 37 encoded genes and a control region. The evolutionary rates of the protein coding genes (PCGs) of the 13 species of Neoneuromus as well as different genera of Corydalinae are estimated. All the transfer RNA genes (tRNAs) have the typical clover-leaf secondary structure except trnS1 (AGN). Interspecific relationships within Neoneuromus were reconstructed based on different datasets generated from mitogenomic sequences. Our results indicate that tRNA and ribosomal RNA genes (rRNAs) of Neoneuromus species contribute phylogenetic signal when being concatenated with the PCGs, thus should be kept during phylogenetic analysis. The results sheds light on un derstanding the evolution of these aquatic and predatory insects.