Raspberry sawfly

The raspberry sawfly, identified by the Latin name Blennocampa rubi, belongs to the order Hymenoptera and the family Tenthredinidae. This insect is a known pest in berry gardens, where it can significantly affect the health and yield of raspberry and blackberry plantations.

This pest specifically targets Rubus species, including raspberries and blackberries. Both adults and larvae interact with the plant, but the larvae are the primary cause of damage due to their voracious appetite during the growing season, which compromises the vitality of the canes.

The life cycle begins with the emergence of adults in the spring, coinciding with the host plant's blooming phase. Females deposit eggs into the leaf tissues. After hatching, the larvae go through several instars, feeding on the foliage before descending to the soil to pupate in protective cocoons for overwintering.

The damage is characterized by irregular holes and skeletonization of the leaves. High populations of larvae can cause severe defoliation, which limits the plant's photosynthetic capacity, stunts overall growth, and reduces the fruit yield for the harvest season.

Management strategies focus on a mix of cultural and chemical controls. Cultural methods, such as soil cultivation under the bushes to disrupt overwintering cocoons, are highly recommended. If pest pressure is severe, authorized insecticides should be applied, ensuring they are used according to safety guidelines to protect beneficial pollinators and ensure harvest safety.