The chromosome-level genome of the woolly apple aphid Eriosoma lanigerum (Hausmann) provides insight into waxy synthesis and secretion

Woolly apple aphid (WAA), Eriosoma lanigerum (Hausmann), is a worldwide invasive pest that seriously damages apple trees in almost all apple-growing areas. Here, we used PacBio reads to produce a 357 Mb high-quality chromosome-level assembly for the WAA genome. The N50 lengths of contigs and chromosomes were 4.0 Mb and 65.1 Mb, respectively. In total, 95 Mb (12.5%) repeat sequences and 15,906 gene models were identified in the genome. We identified 101 expanded and 33 exclusive orthologous groups in E. lanigerum, mainly functioning in cell growth and death, signal transduction, and carbohydrate and amino acid metabolism, which contribute to adaptation and metabolite synthesis.