Red-winged leaf-rolling weevil

The red-winged leaf-rolling weevil (Apoderus erythropterus) belongs to the Attelabidae family within the order Coleoptera. This small beetle is well-known for its unique behavior of rolling plant leaves into distinctive cigar-shaped structures, which serve as both a protective shelter and a food source for its larvae.

The pest primarily affects various woody plants and shrubs. It most frequently targets members of the Betulaceae family, such as birch and alder, but may also attack specific fruit trees. In garden environments, it can damage foliage, thereby reducing the total photosynthetic surface area of the tree canopy.

The insect's life cycle is closely synchronized with the growing season of the host plant. Adult beetles emerge in the spring, and females begin the egg-laying process. Each egg is carefully deposited within a prepared and rolled leaf, providing the developing larva with a safe and nutritious environment during its early growth stages.

The primary damage occurs during the "cigar" formation process. The female nibbles the leaf petiole before rolling the leaf blade into a tight, secure roll. This causes premature wilting of the damaged foliage, leaf drop, and shoot deformation. During outbreaks, this pest can significantly weaken both ornamental and fruit-bearing trees.

Control measures involve a combination of agronomic and chemical strategies. It is essential to regularly collect and destroy the fallen leaf rolls containing the larvae before they emerge. If populations are high, the application of systemic or contact insecticides during the beetles' peak flight period is highly recommended for effective management.

• Regular inspection of tree canopies during May and June.
• Mechanical removal and disposal of infested leaves.
• Use of pheromone traps to monitor population levels.
• Application of registered insecticides during severe infestations.