The complete mitochondrial genome of a predominant parasitoid, Necremnus tutae (Hymenoptera: Eulophidae) (GenBank accession number MT916846) is 15,252 bp in length, and contains 13 proteincoding genes (PCGs), 22 transfer RNA genes (tRNAs), 2 ribosomal RNA genes, and an AþT-rich region. The overall base composition is 38.86% for A, 7.14% for C, 8.57% for G, and 45.43% for T, with a high AT bias of 84.29%. ATA, ATT, ATG were initiation codons and TAA and T were termination codons. All the 22 tRNAs displayed a typical cloverleaf secondary structure, except for trnS1 and trnR which lacked the dihydrouracil (DHU) arm. Phylogenetic analyses were performed using 13 PCGs showed that N. tutae is closely related to Tenthredo tienmushana, which in accordance with the traditional classification.