Raspberry Beetle

Byturus tomentosus, Raspberry Beetle

Raspberry beetle feeds at the stalk end of the blackberries, raspberries, loganberries. It is mainly a problem on summer-fruiting raspberries.

Though the beetle larvae are pests for Raspberry growers, adults can be found feeding on pollen on a variety of wildflowers. The small adults often congregate within flowers, particularly composites such as Dandelion. (Source: RHS Gardening)


Byturus tomentosus lays its eggs on the flowers of Raspberries, Blackberries and Loganberries. When the larvae hatch they eat the developing fruit. The 4mm (about 1/8in) long adult beetles are pale brown and they lay eggs on the flowers in May to mid-July. The young larvae feed at the stalk end of the developing fruit, but later move inside to feed on the central plug. In late summer, the fully-fed larvae move into the soil where they overwinter as pupae.

Research & Development

Biological Control


Application Guidelines

The best way to track the presence of the the raspberry beetle is with the insect’s pheromone.

Recent Literature