We present a genome assembly from an individual female Rhogogaster chlorosoma (the pale Rhogogaster; Arthropoda; Insecta; Hymenoptera; Tenthredinidae). The genome sequence is 255 megabases in span. The whole assembly is scaffolded into 10 chromosomal pseudomolecules. The mitochondrial genome has also been assembled and is 16.0 kilobases in length. Gene annotation of this assembly on Ensembl has identified 24,433 protein coding genes.