Abstract
In this study, the complete mitochondrial genome of Leucoptera malifoliella (Costa, 1836) (Lepidoptera: Lyonetiidae) was sequenced and annotated. The genome is 15,214 bp in size, comprises 37 typical genes and a control region, and shows a positive AT skew. The gene content and order are similar to those of other lepidopterans. Phylogenetic analysis confirmed that families within Yponomeutoidea are monophyletic. The relationships among families are inferred as (Praydidae + Attevidae) + (Lyonetiidae + (Scythropiidae + Plutellidae)). This research improves our understanding of the relationships among major Yponomeutoidea lineages.