The genome sequence of the Lesser Broad-bordered Yellow Underwing, Noctua janthe (Borkhausen, 1792).

We present a genome assembly from an individual male Noctua janthe (the Lesser Broad-bordered Yellow Underwing; Arthropoda; Insecta; Lepidoptera; Noctuidae). The genome sequence is 532.8 megabases in span. Most of the assembly is scaffolded into 31 chromosomal pseudomolecules, including the Z sex chromosome. The mitochondrial genome has also been assembled and is 15.3 kilobases in length. Gene annotation of this assembly on Ensembl identified 17,653 protein coding genes.