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Woolly apple aphid

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Woolly apple aphid

Insect — Hemiptera

What is an opportunist?

An "opportunist" is a population (fungi, bacteria, insects…) that takes advantage of a favourable environment to settle in, multiply and feed on it. It often develops when the natural defences of the affected organism are weakened — for genetic reasons or linked to context (water stress, deficiencies, nutritional imbalances, overcrowding…). This is typically the case in monocultures, where a single host plant, uniform and present in large numbers, offers ideal ground for it to spread.

Identification key : Aphids and phylloxera (Adult (and nymphs resembling the adult))

Scientific name : Eriosoma lanigerum

Other names : Woolly aphid, American blight

Aphid covered in white cottony wax threads that lives in colonies on apple twigs, pruning wounds and roots. When crushed it leaves a reddish stain. Its feeding causes swellings and galls on wood and roots, which crack and weaken the tree; it produces honeydew.

Crops affected : Apple tree

Source : Eriosoma lanigerum (ERISLA)[Overview] — EPPO Global Database — EPPO

This page lists the bio-preparations in the collection that other references associate with this opportunist: Woolly apple aphid.

Warning: the associations between recipes and opportunists come from other references (traditional practices, publications, user feedback). They are neither a recommendation nor a claim of effectiveness. There is no certainty regarding the preparation, application and use of these bio-preparations. See the regulations

No published recipe is associated with this opportunist yet.

See also

Crops

Apple tree

Opportunists of the same crops

Powdery mildew Brown rot (Monilinia) San José scale Mites Aphid Spider mite Caterpillars / worms Botrytis (grey mould) Beetles Ants Scab Fruit tree canker (Nectria)

← Referenced opportunists

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