Characterization of the complete mitochondrial genome of the orange swift, Triodia sylvina

In this study, the complete mitochondrial genome of orange swift, Triodia sylvina, was recovered through Illumina sequencing data. This complete mitochondrial genome of T. sylvina is 15,040 bp in length and has a base composition of A (41.0%), T (41.2%), C (10.4%), G (7.5%), demonstrating an extreme bias of high AT content (82.2%). The mitochondrial genome contains a typically conserved structure among moth mitogenomes, encoding 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, two ribosomal RNA (12S rRNA and 16S rRNA) genes and a control region (D-loop region). Seven PCGs were located on the H-strand, others were located on the L-strand. ATP8 gene and ATP6 gene were overlapped by 6 bp. ND4 gene and ND4L gene were overlapped by 9 bp. The whole mt genome of T. sylvina and other moth and butterfly mitogenomes (100 species, in total) were used for phylogenetic analysis. The result indicated T. sylvina represents a distinct genus, which separated far from genus Hepialus.