Fruit-boring moth

Systematic position: Decadarchis carpophthora belongs to the order Lepidoptera, family Tineidae. It is a specialized pest primarily active in tropical and subtropical regions, where it targets the fruits of various perennial woody crops.

Crops affected: This insect causes significant economic damage to plantations of cocoa, oil palm, and several other fruit-bearing species. The larvae penetrate developing fruits, leading to substantial crop losses and a marked decrease in the marketability of the produce.

Biology and life cycle: The life cycle is closely linked to the developmental stages of the host plant's fruit. Females lay eggs directly onto the fruit surface or into small cracks in the epidermis. Upon hatching, the larvae burrow into the tissues, feeding on the pulp and creating winding galleries before pupating inside the damaged fruit or within the bark layers.

Nature of damage and harmfulness: The primary harm is caused by the breach of the fruit's integrity. These entry points often serve as avenues for secondary infections, such as fungal and bacterial pathogens, which cause fruit rot and premature abscission. Under high humidity conditions, the infestation can lead to widespread crop failure.

Control measures: Managing this pest requires an integrated approach.

• Regular removal and destruction of fallen or infested fruits to break the life cycle.
• Application of selective insecticides during the peak adult flight period.
• Utilization of pheromone traps for population monitoring.
• Adopting proper horticultural practices to avoid dense canopy growth, thereby making the fruit less accessible to the pest.