Fruit fly Bactrocera amplexa

Systematic position
Bactrocera amplexa belongs to the order Diptera and the family Tephritidae. It is a member of the Bactrocera genus, which contains some of the most economically significant fruit fly species found globally, particularly in tropical and subtropical climates.

Host crops
This pest demonstrates a strong host preference for various fruit-bearing plants. It targets a wide range of commercially valuable crops, where the fruit provides the essential nutrition required for the larval stage of the fly's development.

Biology and life cycle
The life cycle consists of four distinct stages: egg, larva, pupa, and adult. The female deposits eggs beneath the skin of ripening fruit using an ovipositor. Upon hatching, the larvae tunnel into the fruit to feed on the flesh. Once the larval development is complete, they emerge from the fruit to pupate within the soil beneath the host plant.

Damage and economic impact
Feeding activity leads to the rapid softening of fruit tissue, discoloration, and premature fruit drop. The puncture sites created by the female serve as entry points for secondary pathogens, such as bacteria and fungi, causing rapid rot. Infestations result in significant yield losses and often render crops unmarketable.

Protection and control measures
Managing Bactrocera amplexa requires an integrated pest management strategy:

• Rigorous sanitation, including the prompt removal and destruction of fallen fruit to disrupt the life cycle.
• Deployment of pheromone traps to monitor population levels and track fly activity.
• Strategic application of insecticides during peak fly activity periods.
• Enforcement of quarantine measures to prevent the spread of infested produce.