Complete Mitochondrial Genome Characterization of Schrankia costaestrigalis (Insecta: Erebidae: Hypenodinae) and Its Phylogenetic Implication

The pinion-streaked snout Schrankia costaestrigalis is a new potato pest that has recently been recorded in China. In this study, we analyzed the complete mitochondrial genome of S. costaestrigalis. results revealed mitogenome (GenBank: OQ181231) to occur as circular DNA molecule 16,376 bp with 51.001% AT content, including 13 protein-coding genes (PCGs), 22 transfer RNA (tRNA) genes, 2 ribosomal (rRNA) and 1 control region. Notably, PCGs exhibited typical ATN (Met) start codons, cox1, which deviated from usual CGA codon observed other lepidopteran mitogenomes, followed conventional TAN stop codons. tRNA demonstrated ability form cloverleaf structure, exception trnS1-NCU, lacked DHU arm present Erebidae mitogenomes. Additionally, conserved motifs like “ATAGA + poly-T (19 bp) stretch” five microsatellite-like elements (TA) were identified AT-rich phylogenetic trees Hypenodinae subfamily forms an independent lineage closely related Erebinae Catocalinae. comprehensive will greatly enhance future studies focused on molecular classification understanding within larger family Erebidae.