The genome sequence of the hoverfly, <i>Orthonevra brevicornis</i> (Loew, 1843) (Diptera: Syrphidae)

We present a genome assembly from an individual male <i>Orthonevra brevicornis</i> (hoverfly; Arthropoda; Insecta; Diptera; Syrphidae). The assembly contains two haplotypes with total lengths of 788.61 megabases and 718.58 megabases. Most of haplotype 1 (91.69%) is scaffolded into 6 chromosomal pseudomolecules, including the X chromosome. Haplotype 2 was assembled to scaffold level. The mitochondrial genome has also been assembled, with a length of 17.36 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.