Citrus fruit borer

Systematic position. Prays endocarpa belongs to the order Lepidoptera, family Yponomeutidae. It is a highly specialized pest known primarily for its destructive impact on the fruit of various citrus species, posing a significant challenge to commercial citrus production in infested regions.

Host plants. The primary hosts for this species are citrus trees, with a marked preference for developing fruits. Species such as pomelo, grapefruit, and lemon are frequently attacked. Unlike leaf-mining moths, this specific pest focuses its nutritional intake on the fruit rind, causing direct economic damage.

Biology and lifecycle. The lifecycle comprises the egg, larva, pupa, and adult stages. Adult females lay eggs on the surface of young fruits. Upon hatching, the larvae immediately bore into the flavedo and albedo layers. This internal feeding behavior protects the larvae from many external environmental factors and complicates chemical control efforts.

Damage and pest status. The presence of Prays endocarpa is marked by serpentine mines under the fruit skin. These feeding tunnels often lead to fruit abscission, scarring, and deformation. Furthermore, the tunnels create entry points for secondary fungal and bacterial infections, leading to rot and substantial post-harvest losses if not managed correctly.

• Monitoring adult activity using sex pheromone traps.
• Implementing systematic orchard sanitation by removing and destroying infested fruit.
• Applying systemic insecticides targeting the early larval stages before they bore deep into the fruit.
• Encouraging biological control agents, such as parasitoid wasps that predate on the larvae.
• Maintaining accurate records of pest cycles to optimize the timing of control applications.