Yellow-winged weevil

The yellow-winged weevil (Latin: Peritelus flavipennis) is a member of the Curculionidae family, within the order Coleoptera. This beetle is recognized as a significant pest in various agricultural regions, particularly affecting perennial crops and leafy vegetables.

This species is highly polyphagous, meaning it feeds on a wide range of host plants. The primary crops at risk include grapevines, fruit trees such as apples and peaches, berry bushes, and various legumes and root crops. The adults are known to cause the most damage during the early growing season.

The biology and lifecycle of Peritelus flavipennis are characterized by hibernation as adults in the upper soil layers. Upon the arrival of spring temperatures, they emerge from the soil to feed on emerging buds and young foliage, which are crucial for the plant's seasonal development.

The damage caused by this pest is primarily cosmetic and physiological. Feeding patterns typically involve irregular notches on the leaf margins and complete destruction of vegetative or floral buds. Severe infestations can significantly stunt plant growth and reduce overall fruit yield, necessitating timely intervention.

Integrated Pest Management (IPM) strategies for controlling this weevil include:

• Mechanical removal and monitoring using light traps or shaking branches.
• Application of selective insecticides during the peak activity period.
• Soil cultivation to disrupt the larvae and pupae development cycle.
• Elimination of wild host plants and weeds surrounding the fields.