Additional file 1: Table S1. Statistics for sequencing data. Table S2. Summary of statistics for Eupeodes corollae chromosomes. Table S3. BUSCO (Benchmarking Universal Single-Copy Orthologues) assessment of Eupeodes corollae genome using insecta_odb9 data sets (n = 1,658). Table S4. Characteristics of transposable elements in Eupeodes corollae. Fig. S1. Distribution of 17-mer frequency of Illumina sequencing reads of Eupeodes corollae. Fig. S2. Venn plot of functional annotations for predicted proteins of Eupeodes corollae. Fig. S3. The number of the orthologous groups shared between Eupeodes corollae and other species by OrthoFinder analysis. Fig. S4. Distribution of cytochrome P450 genes on the four chromosomes of Eupeodes corollae.