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Common cockchafer (white grub)

Common cockchafer (white grub)

Larva — Coleoptera

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 : Scarabaeiform larva (white grub) (Larva) Scarabs (chafers, rhinoceros beetles…) (Adult (and nymphs resembling the adult))

Scientific name : Melolontha melolontha

Other names : May bug, White grub

Brown beetle 2 to 3 cm long that flies in spring, in large numbers every three or four years. Adults eat leaves of oak, beech, chestnut and fruit trees; the white C-shaped larvae live several years in the soil and gnaw the roots of grassland, potatoes, strawberries and young plants.

Crops affected : Beech, Chestnut, Hazelnut tree, Lawns and turf, Oak, Plum tree, Potato, Strawberry, Walnut tree

Source : Melolontha melolontha (MELOME)[Overview] — EPPO Global Database — EPPO

This page lists the bio-preparations in the collection that other references associate with this opportunist: Common cockchafer (white grub).

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

Hazelnut tree Chestnut Lawns and turf Plum tree Strawberry Beech Walnut tree Potato Oak

Opportunists of the same crops

Xylella fastidiosa Brown marmorated stink bug Phytophthora cinnamomi root rot Sudden oak death Tomato spotted wilt virus Beetles San José scale Chilli thrips Stolbur (bois noir) Verticillium wilt Bacterial diseases Slugs and snails

← Referenced opportunists