Trirhithrum teres

Systematic position: Trirhithrum teres is a member of the order Diptera and the family Tephritidae (fruit flies). It is recognized as a significant agricultural pest, particularly in specific African regions where its host plants are grown, requiring strict monitoring and management strategies.

Host plants: The pest primarily targets a variety of fruit-bearing plants. It poses a substantial threat to orchard production, as it specializes in utilizing ripening fruits as a substrate for oviposition and larval development, causing economic losses for local farmers.

Biology and life cycle: The female fly uses its ovipositor to insert eggs beneath the skin of a developing fruit. Upon hatching, the larvae tunnel through the pulp, consuming the host tissue. Once the larval stage is complete, the insect drops to the soil to pupate. The pupal stage occurs in the ground, where the insect remains protected until the adult emerges to repeat the cycle.

Damage and pest status: The primary injury is caused by the larval feeding, which leads to internal fruit decay, premature fruit drop, and susceptibility to secondary infections by fungi and bacteria. Infested fruits are generally unmarketable, and heavy infestations can result in the loss of a significant percentage of the potential harvest.

• Deployment of pheromone traps for monitoring and mass trapping of adults.
• Prompt removal and destruction of fallen fruit to break the life cycle.
• Application of targeted insecticides during the peak activity of adult flies.
• Maintaining field hygiene to reduce pupal habitats in the soil.
• Implementing strict quarantine protocols for imported plant materials.