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Identifying raspberry beetle on Raspberry
Small light-brown beetle; pale-brown grub with dark markings found inside ripening raspberries and other cane fruit.
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Life cycle
Single generation per year; adults emerge in late spring to lay eggs on flowers, larvae feed as fruit ripens then drop to overwinter as pupae in soil.
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Damage to Raspberry
Larvae feed inside developing fruit near the stalk end, causing shrivelled, maggot-infested berries that collapse when picked.
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How to treat raspberry beetle on Raspberry
Hoe or cultivate soil beneath plants in autumn and winter to expose overwintering pupae. Remove infested fruit.
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Preventing raspberry beetle on Raspberry
Encourage birds and ground beetles, which prey on overwintering pupae in soil.