Insecta, Diptera, Agromyzidae .
Description, Biology, Life Cycle, Damage, Common Names, Images
- This fly is dependent on the endive.
- The adult is found in summer in crops and lays on the aerial parts of field-grown crops.
- The larva lives as a miner in the endive leaf, forming long twisting galleries which take on a reddish tint (*) . It moves from one scale to another before pupating inside one of the latter.
- 3 to 4 generations per annum in forcing sheds, 1 in the open field.
- Damage is caused by the larvae which, at the time plants are being prepared for forcing, are found on sections of the petiole, near the collar. The larvae leave these sections when the latter rot to attack the young terminal bud leaves. After a few days at a temperature of 15 - 20°C the larva pupates in the gallery; in the wild this does not occur until April.
During the forcing period, the galleries excavated in the leaves and at the base of the petioles which contain maggots considerably reduce the value of the endive crop (*) .
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.