Abstract
We present a genome assembly from an individual Alydus calcaratus (plant bug; Arthropoda; Insecta; Hemiptera; Alydidae). The assembly contains two haplotypes with total lengths of 1 007.28 megabases and 1 001.78 megabases. Most of haplotype 1 (99.21%) is scaffolded into 7 chromosomal pseudomolecules, including the X sex chromosome. Haplotype 2 was assembled to scaffold level. The mitochondrial genome has also been assembled, with a length of 18.53 kilobases. This assembly was generated as part of the Darwin Tree of Life project, which produces reference genomes for eukaryotic species found in Britain and Ireland.