Doliopygus brevis

Doliopygus brevis is a wood-boring beetle belonging to the Scolytinae subfamily within the Curculionidae family. This species is recognized as a significant threat to timber resources and agricultural plantations in tropical regions, primarily throughout the African continent.

The pest targets a wide variety of woody plants, showing a particular preference for weakened, felled, or recently cut timber. In commercial agriculture, it is known to infest cocoa trees, causing severe structural damage to the stems and branches which can significantly reduce crop yields and tree longevity.

Biologically, this insect is categorized as an ambrosia beetle. The adults bore galleries into the sapwood and heartwood, where they introduce symbiotic fungi. These fungi colonize the gallery walls and serve as the primary nutritional source for the developing larvae, making the beetle's survival dependent on both the wood and the associated microflora.

The damage caused by Doliopygus brevis is characterized by small, circular entry holes accompanied by fine, powdery wood dust known as frass. The presence of these galleries deep within the wood destroys its structural integrity and aesthetic value, rendering the timber commercially worthless and predisposing the tree to secondary infections and rapid decay.

Integrated Pest Management (IPM) is essential for controlling this beetle. Key strategies include the rapid removal of logging debris, ensuring proper forest sanitation, and utilizing pheromone monitoring traps. Additionally, quick chemical or heat treatment of harvested logs is critical to prevent the emergence of new generations and to minimize economic losses in the wood industry.