Description, Biology, Life Cycle, Damage, Common Names, Images
- Host plant: asparagus.
- Adult: very active, they fly and attack the first asparagus shoots. They mate and lay during flowering.
- Egg: they are disposed side by side at the extremity of the fronds. Embryonic development lasts 7 to 12 days.
- Larva: feeds several berries (*) . In 8 to 10 days, it reaches its final size and climb down the stem to bury itself at a depth of a few centimeters in the ground. It builds a small chamber and then pupates.
- Length of nymphosis: 12 to 20 days.
- 2 generations per year.
- The adults having hibernated appear in late spring, those of the first generation at the end of July. The larvae pupate in the autumn, overwintering in the soil or other sheltered situations.
Damage caused by these insects, which is limited to the asparagus berries, is generally of only minor importance.
However, the beetles are feared in the seed beds where the fronds are grown aq ornamental foliage.
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.