Melon fly alias: cucumber fly, melon fly, melon fly, needle bee, melon maggot.
Harmful substances: bitter gourd, gourd, wax gourd, pumpkin, cucumber, loofah, cucumber, bamboo shoots and other melon crops.
Hazard characteristics: the adult ovipositor pierces the epidermis of the young melon to lay eggs, and the larvae feed in the melon immediately after hatching. The damaged melon first turned yellow locally, and then the whole melon rotted and stinked, resulting in a large number of melons falling. Even if it doesn't rot, the puncture wound has glue condensation, deformation and depression, and the skin is hard and bitter, which seriously affects the quality and yield of melon.
Prevention and control methods:
1, poison bait trapping and killing.
2. Clear the damaged melons in time and spray the rotten melons. The fallen melon should be buried deep in the pit below 1 meter.
3. Protect young melons and cover them with bags or grass to prevent adults from laying eggs.
4. Chemical control.