Project description:Here, we determined the complete mitogenome sequence of Sympiezomias velatus (Coleoptera: Curculionidae: Entiminae). This mitogenome was 15,592?bp long with an A?+?T content of 74.1% and contains 13 protein-coding genes (PCGs), 21 transfer RNA genes (tRNAs), 2 ribosomal RNA unit genes and a large non-coding region (putative control region). The trnI gene was not found in the S. velatus mitogenome. The order and orientation of the mitochondrial genes were identical to the inferred ancestral arrangement of insects except for trnR which was changed to be adjacent the nad3 gene. All tRNAs had the typical cloverleaf structure, except for trnS1 which lacked the dihydrouridine arm. The Bayesian phylogenetic tree of 10 Entiminae species based on the concatenated nucleotide sequences of 13 PCGs strong supported a sister relationship of S. velatus and Barynotus obscures.