Dicelosternus corallinus

Systematic position. Dicelosternus corallinus belongs to the order Coleoptera and the family Curculionidae (weevils). This species is a specialized pest that is of significant concern to foresters, arborists, and horticulturalists who deal with ornamental and fruit-bearing tree species.

Host plants and economic impact. The primary hosts for this insect are members of the Rosaceae family. The pest typically targets various decorative and fruit trees, feeding on buds, leaves, and stems, which leads to a substantial decrease in the vitality and productivity of the infested plantations.

Biology and lifecycle. The life cycle of the insect consists of four stages: egg, larva, pupa, and adult. Adult beetles are active during the warmer months and maintain a cryptic lifestyle. Larvae develop within the plant tissues by creating tunnels, which makes it extremely difficult to detect the infestation before significant structural damage occurs.

Damage patterns. Adult beetles consume buds and leaves, disrupting photosynthesis and weakening the overall defense mechanism of the host plant. The larval stage is considered the most destructive, as their burrowing into the cambium and wood results in branch dieback and, in severe cases, the death of young trees.

Protection measures. Managing this pest requires an integrated strategy to be effective.

• Application of contact-stomach insecticides during the peak adult flight period.
• Regular sanitary pruning and removal of infested plant parts.
• Improving tree health and resilience through proper silvicultural and agricultural practices.
• Monitoring population density using pheromone traps.