Insecta, Lepidoptera, Tortricidae .
Description, Biology, Life Cycle, Damage, Common Names, Images
- 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.
-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.
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.