The genome sequence of a darkling beetle, Nalassus laevioctostriatus (Goeze, 1777) (Coleoptera: Tenebrionidae)

We present a genome assembly from an individual female Nalassus laevioctostriatus (darkling beetle, Arthropoda; Insecta; Coleoptera; Tenebrionidae). The assembly contains two haplotypes with total lengths of 534.57 megabases and 558.90 megabases. Most of haplotype 1 (89.73%) and haplotype 2 (83.43%) are each scaffolded into 10 chromosomal pseudomolecules, including the X sex chromosome. The mitochondrial genome has also been assembled, with a length of 15.53 kilobases. This assembly was generated as part of the Darwin Tree of Life project, which produces genomes for eukaryotic species found in Britain and Ireland.