We present a genome assembly from an individual female Philereme vetulata (the Brown Scallop; Arthropoda; Insecta; Lepidoptera; Geometridae). The genome sequence is 771 megabases in span. Most of the assembly is scaffolded into 68 chromosomal pseudomolecules, including the assembled Z sex chromosome. The mitochondrial genome has also been assembled and is 16.3 kilobases in length. Gene annotation of this assembly on Ensembl has identified 18,096 protein coding genes.