Yellow-striped moth

Systematic position. Decadarchis flavistriata belongs to the order Lepidoptera and the family Tineidae. This moth is identified as a significant pest in tropical and subtropical regions, posing a recurring challenge for producers of various plantation crops and specialty horticultural plants.

Affected crops. This pest primarily targets coconut palms, banana trees, and other tropical fruits. The larvae are known to burrow into inflorescences and fruits, causing substantial internal damage that is often not visible from the exterior until the plant parts begin to decay or drop prematurely.

Biology and life cycle. The life cycle comprises four distinct stages: egg, larva, pupa, and adult. The moths typically lay eggs on the surface of tender plant tissues. Upon hatching, the larvae immediately begin feeding, boring into the plant structure to develop. The pupal stage occurs within the plant tissue or in hidden crevices, providing protection against environmental fluctuations and predators.

Damage and economic impact. The feeding activity of the larvae disrupts the normal development of flowers and fruit, leading to significant yield losses. Furthermore, the tunnels created by the larvae serve as entry points for secondary fungal and bacterial infections, which accelerate the rotting of the fruit, rendering the harvest unmarketable and causing severe economic stress.

Control measures. Integrated Pest Management (IPM) is essential for controlling this species. Control strategies include:

• Sanitation through the removal and destruction of infested plant material.
• Application of selective insecticides during the egg-laying phase.
• Use of monitoring traps to determine optimal timing for pesticide application.