Insecta, Coleoptera, Rhynchitidae .
Description, Biology, Life Cycle, Damage, Common Names, Images
- Host plants: apple, plum.
- Adult: it overwinters under bark flakes and various other shelter and becomes active early in the spring. It feeds by biting the buds, the shoots, the flowers and especially the young fruitlets (*) .
Average fecundity, 20 eggs. These are deposited individually in the fruitlets at the bottom of a small cell that the insect forms with its rostrum (*) ; then the female partially gnaws the peduncle, which reduces sap circulation.
- Larva: it develops during the summer in the fruit which drops prematurely; in autumn, it leaves the fruit and pupates in the ground.
- 1 generation per year.
The feeding punctures of the adult cause a marked deformation of the fruit (*) . In addition, the fruitlets containing a larva, and of which the peduncle has been partly cut by the female during egg laying, drops prematurely.
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.