Whole-genome shotgun sequencing was performed on the Illumina NovaSeq 6000 platform (Illumina, San Diego, CA, USA) at Shanghai Lingen Biotechnology Co., Ltd. (Shanghai, China). A total of 15.8 million paired-end reads (150 bp) were generated from genomic DNA of Cassida virguncua, raw reads used for complete mitochondrial genome assembly and phylogenetic analysis of two elytral color morphs.