Description, Biology, Life Cycle, Damage, Common Names, Images
- This beetle attacks only asparagus.
- Adult: hibernates in the ground or under decomposing plants; to feed, it nibbles the foliage. The female lays its eggs at regular intervals, singly or in groups of 3 to 8.
- Egg: embryonic development lasts 3 to 8 days.
- larva; the young larva gnaws the various aerial parts of asparagus. Larval development lasts 15 to 20 days for the first generation, 10 to 15 days for the second. Its growth finished, the larva climb down the plant and pupates in the ground.
- 2 generations per year.
- The adults having hibernated lay eggs in the beginning days of May and first generation adults appear in June. Those of the second generation are formed in July but remain in diapause until the next spring.
- The principal damage is due to larvae which gnaw and destroy all the green parts of the fronds, reducing considerably or totally preventing photosynthesis (*) .
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