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Chestnut gall wasp

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Chestnut gall wasp

Insect

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 : Ants, wasps and gall wasps (Adult (and nymphs resembling the adult))

Scientific name : Dryocosmus kuriphilus

Other names : Oriental chestnut gall wasp

Small black wasp 2 to 3 mm long, native to China and present in Europe since 2002. It lays eggs in chestnut buds in summer; the following spring green or pinkish galls form on shoots and leaves, reducing growth and nut production. Only females exist, reproducing without males.

Crops affected : Chestnut

Source : Dryocosmus kuriphilus (DRYCKU)[Overview] — EPPO Global Database — EPPO

This page lists the bio-preparations in the collection that other references associate with this opportunist: Chestnut gall wasp.

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

Chestnut

Opportunists of the same crops

Beetles Phytophthora cinnamomi root rot Xylella fastidiosa Chestnut blight Sudden oak death Common cockchafer (white grub)

← Referenced opportunists

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