Acanthoderes quadrigibba

Systematic position: Acanthoderes quadrigibba belongs to the order Coleoptera and the family Cerambycidae, commonly known as longhorn beetles or wood borers. This species is native to the Neotropical region and is recognized as a specific timber and wood pest.

Affected crops: This beetle primarily attacks broad-leaved trees. It is frequently associated with weakened or recently felled wood in tropical environments, including various fruit trees and native forest species, where it utilizes the nutrient-rich cambium and sapwood.

Biology and life cycle: The life cycle is typically univoltine or multivoltine depending on climate. Adults emerge and mate, after which females deposit eggs into bark crevices. The larvae bore into the bark and eventually penetrate the deeper layers of the wood to feed, passing through several instars before forming a pupal chamber.

Nature of damage and harmfulness: The damage is primarily caused by larval tunneling, which compromises the tree's vascular system. This disruption of nutrient and water flow causes localized or systemic dieback. Severe infestations lead to structural instability of the wood and can eventually kill the host tree.

Protection measures: Integrated pest management (IPM) is essential for control.

• Removal and destruction of infested wood debris.
• Maintaining tree vigor through proper irrigation and fertilization.
• Application of contact insecticides during the adult flight period.
• Implementation of pheromone traps to monitor population levels.