Abstract
We present a genome assembly from an individual male Thera firmata (Pine Carpet; Arthropoda; Insecta; Lepidoptera; Geometridae). The assembly contains two haplotypes with total lengths of 301.47 megabases and 300.34 megabases. Most of haplotype 1 (98.51%) is scaffolded into 19 chromosomal pseudomolecules, including the Z sex chromosome. Haplotype 2 was assembled to scaffold level. Gene annotation of this assembly on Ensembl identified 11 832 protein-coding genes. The mitochondrial genome has also been assembled, with a length of 16.59 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.