Coffee berry borer

Stephanoderes uniseriatus is a significant pest belonging to the order Coleoptera and the family Curculionidae (subfamily Scolytinae). This tiny insect is well-known in tropical agriculture for its destructive impact on coffee production and its unique lifecycle within the berries.

The primary hosts for this insect are coffee plants. It specifically targets the developing berries, boring into the beans to feed. This specialized feeding habit allows the pest to thrive inside the protective environment of the fruit, making it difficult to detect during the early stages of infestation.

The life cycle is closely linked to the maturation of the coffee cherry. The adult female drills a hole into the fruit to lay eggs. Larvae develop inside the bean, consuming the endosperm, which disrupts the normal development of the seed. Multiple generations can occur annually depending on local climatic conditions and fruit availability.

Infestation symptoms include small entrance holes and internal tunneling, which often lead to premature fruit drop or the presence of hollow, damaged beans. These damages significantly reduce the market value of the crop and can pave the way for secondary fungal infections within the fruit tissue.

Effective management requires an integrated pest management (IPM) approach. Recommended strategies involve:

• rigorous field sanitation by removing infested berries;
• the use of synthetic pheromone traps;
• maintaining healthy tree vigor to withstand minor attacks;
• application of biological agents, such as entomopathogenic fungi like Beauveria bassiana.