Description, Biology, Life Cycle, Damage, Common Names, Images
- Host plant: wild or cultivated brassicas such as cabbage and rape.
- Adult: it lives on the leaves of brassicas which it scrapes and perforates, particularly in warm and dry weather. In cold or humid weather, it remains hidden under the foliage or in the ground.
- Egg: embryonic development lasts about 10 days.
- Larva: it penetrates inside a leaf and develops between the two epidermal layers, forming a mine which will eventually reach a diameter of 6 to 8 mm. It then pupates in the ground.
- 1 generation per year.
- The young adult appears at the beginning of July. It feeds at the expense of the host plant until the end of November, then overwinters in cracks in the ground or under leaves. Activity resumes beginning-April and oviposition occurs in mid-April.
- The young adult can be harmful to autumn-sown crops, especially in warm and sunny weather; it also damages the young spring-sown crops when its activity resumes after overwintering (*) .
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.