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Eurydema oleraceum (L.).
Eurydema oleracea (auct.)

Insecta, Homoptera, Pentatomidae .

Cabbage bug

Description, Biology, Life Cycle, Damage, Common Names, Images

- Adult: 5-7 mm long; black head; body black with bluish or greenish metallic sheen; head and pronotum yellow bordered and dorsally with yellowish or reddish spots (*) (*) .
- Egg: small barrel-shape with 2 flattened poles, yellow greenish in colour and operculum uniformly whitish.
- Nymph: black after hatching and during the 1st instar; after each moult the nymphal instars resemble the adult with yellowish or reddish spots becoming more evident.

- Host plants: cultivated or wild cabbages (Cruciferae) and, less frequent, some gramineous and potato plants.
- Adult: life span of a few months; fecundity 50-80 eggs during 5-7 oviposition periods.
- Egg: incubation period about 15 days.
- Nymph: from the egg hatch to the adult emergence takes 4-5 weeks and includes 4-5 moults.

[R]Life Cycle
- Two generations per year with the the 1st generation of adults in June-July and the second from the end of August to October.
- Adults hibernate on the soil under stones or old leaves and in cracks or crevices in the soil and on trees. Adult activity starts as soon as temperatures rise; they mate and oviposition takes place 2-4 weeks later. Eggs are laid on the underside of cabbage leaves in two rows of 8-12 eggs at each oviposition. These ovipositions can be repeated 5-7 times during the female's life (*) .

Sucking sap from leaves causes damaged areas to become yellowish. Severe attacks can cause all leaves and pods to turn yellow and may lead to the death of young plants.

[R]Common Names
DE: Kohlwanze, Gemüsewanze ES: Chinche azul de la col FR: Punaise verte du chou, Punaise potagère IT: Cimice verde del cavolo PT: Percevejo das couves GB: Green cabbage bug

[R] Images

  1. Eurydema oleracea L. (Coutin R. / OPIE)
    Adult Under leaf of cabbage.
  2. Eurydema oleracea L. (Coutin R. / OPIE)
    Adult feeding on cabbage Rostrum inserted in flower.
  3. Eurydema oleracea L. (Coutin R. / OPIE)
    Egg-laying On the upper side of leaf of cabbage.

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