Paropta moth

Systematic position: The Paropta moth (Paropta paradoxa) belongs to the order Lepidoptera and the family Cossidae. This insect is a notable wood-boring pest, recognized for its larvae's ability to live and feed within the woody tissues of host plants.

Crops damaged: The primary host for this pest is the grapevine (Vitis). However, it is also known to infest various fruit trees such as figs, apricots, and peaches. The damage is exclusively caused by the larvae, which bore into the stems, branches, and trunks.

Biology and life cycle: The lifecycle of the Paropta moth is characterized by its internal development inside the plant wood. Females lay their eggs on the bark. Upon hatching, the larvae penetrate the wood and create extensive galleries, which they inhabit throughout their larval stage, sometimes for more than one season.

Character of damage and harmfulness: Larval feeding disrupts the vascular system, specifically the xylem and phloem, of the plant. This leads to reduced vigor, branch dieback, and in severe cases, the death of the vine or tree. The presence of sawdust and sap flow at the entry points is a diagnostic sign of infestation.

Protection measures: Controlling internal feeders requires a combination of cultural and chemical methods:

• Pruning and destroying infested plant parts immediately upon detection.
• Applying systemic insecticides during the peak flight of moths and early larval establishment.
• Maintaining optimal plant health to improve structural integrity and resistance.
• Monitoring for entry holes and sap exudation to catch infestations early.