Eriosoma lanigerum (Woolly Aphid) Host plants: Malus, Crataegus, Sorbus, Pyracanthus, Cotoneaster Symptoms & Significance: Colonies of small brown aphids,

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Presentation transcript:

Eriosoma lanigerum (Woolly Aphid) Host plants: Malus, Crataegus, Sorbus, Pyracanthus, Cotoneaster Symptoms & Significance: Colonies of small brown aphids, covered by white waxy wool White, waxy wool on branches, trunk and exposed roots Bark pitted Honeydew/sooty moulds Infest stems, branches Conspicuous late spring/early summer Cause cankers, which crack open to infection by secondary pathogens

Eriosoma lanigerum (Woolly Aphid) Life Cycle Young aphids overwinter in bark cracks & galls From March: feed on twigs especially in leaf axils, spurs & wounds Summer - wingless aphids develop Occasionally winged aphids leave but not widespread

Woolly Aphid - Control Spray ‘Malathion’/’HCH’ after flowering Severely galled/cankered branches pruned out & burnt Biological control by parasite, Aphelinus mali with minimal insecticide spraying if present