The complete mitochondrial genome of the moon moth, Actias aliena (Lepidoptera: Saturniidae)

Abstract

In this study, we describe the complete mitochondrial genome (mitogenome) sequence of the Actias aliena belonging to the lepidopteran family Saturniidae in terms of general genomic features and composition. The 15,243 bp long genome consisted of a typical set of genes (13 protein-coding genes, 2 rRNA genes and 22 tRNA genes) and 1 major non-coding A+T-rich region. The A. aliena mitogenome harbored the gene order tRNAMet, tRNAIle and tRNAGln between the A+T-rich region and ND2, as shown in most lepidopteran species. The COI gene possessed the CGA initiator, which is found in nearly all lepidopterans lacking a canonical ATN initiator. Twenty-one tRNAs formed the cloverleaf secondary structures but tRNASer(AGN) formed a simple loop in the DHU arm. The 328 bp long A+T-rich region, which was located between the S rRNA and tRNAMet genes, contained several Lepidoptera-specific sequences, such as the ATAGA motif, a poly-T stretch, an AT repeat, and a poly-A stretch, along with an unusual tRNAPhe-like structure.