Pontania dolichura is a leaf-eating pest that mainly damages willow trees and is widely distributed in northern regions. In this study, we sequenced the entire mitochondrial genome of P. dolichura (GenBank accession number: MZ726800). The circular gene was 16,104 bp in length and comprised 38 column elements, including 13 protein-coding genes (PCGs), 22 transfer RNA genes, two ribosomal RNA genes, and a non-coding control region. Most of the PCGs of P. dolichura have typical ATN (Met) start codons and typical TAN stop codons. The A + T contents of the genome, PCGs, transfer RNAs (tRNAs), and ribosomal RNAs (rRNAs) were 80.32%, 78.66%, 81.94%, and 82.59%, respectively. Phylogenetic analysis supported the close genetic relationship between P. dolichura and Mesoneura rufonota indicating that the two species share more recent common ancestor gene. These data will be useful for further molecular identification and population genetics studies.