Melon gall midge

Systematic position of the pest belongs to the order Diptera, family Cecidomyiidae. These minute flies are highly specialized plant parasites, with larvae that induce specific physiological changes in plant tissues, leading to the formation of galls or severe malformations in growing points.

Host plants targeted by this species are primarily cucurbits. The most significant damage is reported in watermelon, melon, and cucumber plantations. In favorable environmental conditions, the population can expand rapidly, threatening both greenhouse and field-grown vegetables.

Biology and lifecycle dynamics are closely tied to the host's phenology. Adults lay eggs directly into the floral or vegetative tissues. Larvae develop within the plant structures, feeding on sap and cell contents. Depending on environmental factors, the pupal stage can occur either within the damaged plant part or in the soil, which serves as a primary overwintering site.

Damage symptoms and harmfulness involve twisted leaves, stunted stems, and deformed, non-viable fruits. Feeding larvae disrupt the normal development of the fruit, often leading to total abortion of ovaries. This results in significant quantitative yield losses and degradation of the quality of the harvest.

Protection measures should be applied preventively and during the early stages of infestation. Integrated pest management (IPM) is essential:

• Strict weed control to remove alternative hosts.
• Crop rotation to break the pest's reproductive cycle.
• Soil cultivation to disturb pupation sites.
• Targeted application of systemic insecticides when monitoring indicates high adult activity.