Rice leafminer

The rice leafminer (lat. Hydrellia albiceps) is a dangerous agricultural pest belonging to the order Diptera, family Ephydridae. This insect species is widespread in regions where rice is cultivated and poses a significant threat to young crops during their period of vigorous growth.

The pest primarily affects rice crops. Adult flies lay eggs on the surface of the leaves, from which larvae emerge. The larvae possess specialized mouthparts that allow them to penetrate the leaf tissue, where they feed intensively on the parenchyma, creating characteristic tunnels known as «mines».

The life cycle of the insect is closely linked to the water management in rice paddies. The adult fly is approximately 2-3 mm long and typically gray-brown in color. The life cycle includes the egg, larva, pupa, and adult stages. Under favorable conditions, the pest is capable of developing through multiple generations per season, which increases its destructive potential in the field.

The damage manifests as white or brown streak-like mines on rice leaves. Severe infestation leads to leaf yellowing, drying, and necrosis. This results in a reduced photosynthetic area, delayed plant development, weakened tillering, and a subsequent significant decrease in grain yield.

Protection measures include a comprehensive approach:

• Adhering to optimal planting dates and conducting quality seed treatments.
• Managing water levels in paddies, which hinders the pupation of larvae.
• Applying systemic insecticides when the economic threshold of damage is exceeded.
• Eliminating weeds that may serve as a reservoir for the pest population.