Description, Biology, Life Cycle, Damage, Common Names, Images
Host plants are especially blackthorn (Prunus spinosa), cherry and other fruit trees.
- Females have a life span of about 3 months and lay eggs (rarely more than 85) from June onwards.
- Larval development lasts about 16-36 days; larvae then pupate in the soil. Adults appear from September onwards and overwinter on trees, in crevices or under fragments of loose bark.
Egg-laying usually occurs in June. The females dig channels or galleries near not yet lignified stones (especially those of sour cherry) and lays an egg at the bottom of the gallery, covering it with a mixture made from surrounding tissues.
The oviposition site is easily recognizable from the outside due to its dark coloration and the marked hollow situated in the middle. Larvae penetrate the stone and develop within it. Once they have completed their development (which lasts 16-36 days), they leave the fruit and pupate in the soil. From September onwards, adults ascend fruit trees, where they will overwinter.
Attacks on green fruits cause mottling, which sometimes cover the whole fruit. Severely damaged fruits drop. Those which, attain maturity, however, are pierced down to the stone.
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.