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Contarinia pisi (Winnertz)
Insecta, Diptera, Cecidomyiidae .

Pea midge

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


[R]Description
- Adult: 3.0 to 3.5 mm long; black-yellowish general coloration.
- Eggs: white, about 0.5 mm.
- Larva: 2 to 3 mm long, of a milky white colour.
- Pupa: dark yellowish, in a silken cocoon coated with soil particles.

[R]Biology
- Host plants: pea, possibly broad bean, horse bean and sweet pea (Lathyrus odoratus).
- Adult longevity: 4 to 6 days.
- Eggs are deposited in clusters inside the flowers, on the young leaves or the pea shoots.
- Larva: larval growth occurs over 10 to 12 days after which the larvae drop to the ground where they form cocoons.
- Pupa: development lasts 10 to 12 days.

[R]Life Cycle
- 2 annual generations, from May to July.
- The eggs are laid at the end of May-beginning of June and the larvae hatch 4 days later to feed at the base of the ovaries or amongst the leaves. Some of the first generation larvae remain in diapause until the next spring, the rest pupate.

[R]Damage
Larval feeding causes swelling of the floral parts (*) , particularly the sepals; the petals are strongly clenched; an attack on terminal shoots leads to a reduction of flower stalks (*) .
The larvae also develop in the pods and feed on the internal surface of the latter or even on the developing seeds.


[R]Common Names
DE: Erbsengallmücke ES: Cecidómido del guisante FR: Cécidomyie du pois IT: Cecidomia del pisello PT: Cecidomídeo da ervilha GB: Pea midge

[R] Images

  1. Contarinia pisi (Winnertz) (COUTIN R. / OPIE)
    Damage on pea Attacked pea flowers turned into galls.
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  2. Contarinia pisi (Winnertz) (COUTIN R. / OPIE)
    Inside a gall The gall has been cut open to show the total destruction of the reproductive organs once the fully grown larva has come out. The attacked flower finally falls off; the arrow shows the excision area.
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