Cucumber fruit fly

Systematic position: Zeugodacus cucumis belongs to the order Diptera and the family Tephritidae (fruit flies). It is recognized as a significant agricultural pest that causes substantial economic losses to fruit and vegetable production in subtropical and tropical environments.

Host plants: The pest primarily targets members of the family Cucurbitaceae. Crops such as cucumbers, melons, watermelons, pumpkins, and squashes are highly susceptible. Occasionally, it can also infest solanaceous plants, broadening its impact on vegetable production systems.

Biology and life cycle: The female fly pierces the epidermis of developing fruit to lay eggs inside. Upon hatching, the larvae feed on the internal tissues of the fruit. After completing their larval stages, they exit the host to pupate in the soil. The life cycle duration is highly dependent on ambient temperatures and humidity levels.

Damage and economic impact: The damage is primarily caused by larval feeding, which leads to internal tissue breakdown and structural collapse of the fruit. These punctures allow opportunistic bacteria and fungi to invade, resulting in rapid decay and rotting. Infested fruit usually becomes unmarketable and shows signs of premature yellowing or drop.

• Deployment of pheromone traps to monitor adult population levels.
• Strict sanitation practices, including the removal and destruction of infested fruit.
• Application of targeted insecticides based on monitoring data during the peak fly activity.
• Utilization of exclusion netting to physically protect fruit from oviposition.
• Crop rotation and management of nearby host weed species to reduce infestation pressure.