Long-horned bostrichid

Systematic position: The long-horned bostrichid (Tetrapriocera longicornis) is a member of the order Coleoptera and belongs to the family Bostrichidae. These beetles, commonly referred to as auger beetles or false powderpost beetles, are recognized for their specialized adaptation to boring into wood.

Affected crops: This pest primarily targets various tree species, particularly those in warmer climates. It is frequently associated with damaged or stressed fruit trees, timber plantations, and ornamental woody plants. The pest is also known to infest stored lumber, causing degradation of the wood quality.

Biology and lifecycle: The lifecycle of Tetrapriocera longicornis is completed within the woody host. Females bore into the bark to deposit eggs. Upon hatching, the larvae excavate tunnels throughout the wood, feeding on the tissue. This internal development makes them difficult to detect until significant structural damage has already occurred within the host plant.

Damage and severity: The economic impact of this beetle is significant, as it can compromise the structural integrity of trees and timber. Damage is identified by numerous small, circular emergence holes on the bark and piles of fine, powdery frass around the base of the tree. Severe infestations often lead to branch dieback and, in extreme cases, the total death of the host.

• Implement rigorous sanitation by removing and destroying infested branches.
• Monitor for adult beetle activity using pheromone traps.
• Apply contact or systemic insecticides during the emergence phase.
• Maintain tree vigor through proper irrigation and nutrient management to prevent colonization.
• Promptly process or seal harvested logs to discourage egg-laying by females.