Olive bark beetle

The olive bark beetle (Hylesinus vestitus) is a member of the Curculionidae family, specifically the Scolytinae subfamily. It is recognized as a significant pest affecting olive plantations, capable of causing serious physiological decline in host trees through its burrowing activity.

This beetle primarily attacks the Olea europaea species. The insects prefer to infest healthy branches and stems of varying ages, though they are particularly attracted to trees that are already suffering from environmental stress or poor orchard management.

The biological cycle consists of distinct stages including eggs, larvae, pupae, and adults. Mating typically occurs after the beetles emerge from their wintering sites. Females bore tunnels into the bark to deposit eggs, and the resulting larvae tunnel extensively, disrupting the plant's vascular system.

Visible damage includes wilting of foliage, branch dieback, and the presence of small, circular exit holes on the bark surface. If left unmanaged, the cumulative effect of these larval galleries leads to the loss of limb structural integrity and a substantial reduction in olive fruit yield.

Management and control strategies include the following practices:

• Regular pruning and immediate destruction of infested wood to reduce pest density.
• Maintaining tree vigor through proper irrigation and balanced fertilization.
• Application of targeted insecticides during the beetle's peak emergence period.
• Utilizing pheromone traps for monitoring and identifying population spikes.