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Pammene fasciana (L.)
Pammene juliana Curtis

Insecta, Lepidoptera, Tortricidae .

Chestnut leaf roller

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

- Adult: 10 to 15 mm wingspan, fore wings ivory to brownish with bluish lines and black dots (*) .
- Larva: 10 to 13 mm, reddish, head, prothorax and anal comb brown.

- Host plants: chestnut, beech (Fagus), oak (Quercus).
- The moth appears at the beginning of summer and flies at dusk. The female oviposite on the upperside of leaves. Average fertility, 180 eggs.
- Egg: embryonic development lasts 21 days at 15°C.
- The young caterpillar pierces the burr (*) and penetrates the basal section of the young fruit in which it forms long galleries. It expels frass from the cupule, on silken threads.
A single larva can infest several fruits in succession. After 40 days, its growth complete, the caterpillar leaves the burr and spins a cocoon in which it remains in diapause under the bark of the host tree.

[R]Life Cycle
-1 generation per annum.

-The caterpillar of this roller moth attacks all the fruits in the cupule (*) , unlike Cydia splendana which attacks only one sweet chestnut at a time. The infested fruits drop prematurely, in July-August.

[R]Common Names
DE: Kastanienwickler, Früher Eßkastanienwickler ES: Polilla de la cataña FR: Tordeuse des châtaignes IT: Tortrice precoce delle castagne PT: Traça das castanhas GB: Chestnut leaf roller

[R] Images

  1. Pammene fasciana (L.) (Coutin R. / OPIE)
  2. Pammene fasciana (L.) (Coutin R. / OPIE)
    Damage on chestnut Attacks are superficial and excrements spoil the appearance of fruits.
  3. Pammene fasciana (L.) (Coutin R. / OPIE)
    Damage on cupule The young caterpillar penetrated the cupule to reach the fruits.

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