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Longhorn beetles (  Cerambycidae  ) play a vital role in global ecosystems. Some of them contribute to nutrient cycling and pollination, while others, pose a threat to forestry production. Despite their ecological importance, there has been a lack of comprehensive analyses on the mitochondrial genomes of   Cerambycidae   beetles. In this study, we have conducted mitochondrial genome sequencing and annotation for four   Cerambycidae   beetles:    Monochamus   sutor   ,    Monochamus   guerryi   ,    Monochamus   galloprovincialis   , and    Monochamus   latefasciatus   . Our analysis revealed a high degree of conservation in these mitochondrial genomes, with rare gene rearrangements observed across the   Cerambycidae   family. Additionally, a notable bias towards AT content was identified, with most genes using ATN as the start codon and TAA as the stop codon. Except for trnS1, all tRNA genes showed typical cloverleaf secondary structures. Phylogenetic analysis using IQ-TREE and Phylobayes consistently produced congruent topologies. At the gene level analyses, our results highlighted the remarkable conservation of the  COX1  gene. Furthermore, at the species level, we observed strong adaptability in the   Spondylidinae   and   Lepturinae   subfamilies. We also offer our insights into contentious aspects of the phylogeny. Overall, our research contributes to a deeper understanding of the phylogeny and evolution of   Cerambycidae  , laying the groundwork for future population genetic investigations.

Comparative Mitochondrial Genomic Analysis of Longhorn Beetles ( Coleoptera : Chrysomeloidea ) with Phylogenetic Implications