Citrus weevil

Systematic position: Brachycerus citriperda belongs to the order Coleoptera and the family Curculionidae (weevils). As a highly specialized pest, it targets specific botanical groups, making its identification and management crucial for citrus growers in relevant climatic zones.

Host plants: The primary hosts of this species are members of the Rutaceae family. It predominantly infests citrus trees, including orange, lemon, and lime varieties, thriving in orchards where young growth is abundant throughout the vegetation season.

Biology and life cycle: The life cycle of the citrus weevil is synchronized with the physiological phases of the host plant. Adults typically emerge in spring, coinciding with the first growth flush. Eggs are deposited into the plant tissue, where larvae develop by consuming the internal structures of the shoots, providing them with shelter from environmental factors and natural predators.

Damage patterns and economic importance: Infestation is characterized by feeding marks on foliage and systemic weakening of the tree due to larval boring. High densities of this pest can lead to shoot dieback, stunted growth, and a reduction in fruit quality and yield, which directly impacts the commercial viability of the citrus plantation.

Protection measures: Management requires an integrated pest management (IPM) strategy. Cultural practices, such as proper pruning and irrigation, help maintain tree health. Chemical control involves the application of appropriate insecticides during the active adult migration period or targeted systemic treatments to reach larval stages hidden within the plant tissues.

• Regular field scouting to detect early adult feeding signs.
• Pruning and destruction of infested branches to reduce local population.
• Application of selective insecticides during key phenological windows.
• Implementation of sanitation protocols to prevent spread between orchard plots.