Invasive Animal

Strawberry Blossom Weevil

Anthonomus rubi

About This Species

Strawberry blossom weevil is native to Europe, where it is a pest of strawberries and cane-fruits. This weevil is a recent arrival in BC and has a serious potential to disrupt the BC berry growing industry. Strawberry blossom weevil has been reported throughout the Lower Mainland, south of the Fraser River from Hope to Richmond-Delta, and north of the Fraser River from Coquitlam to Dewdney.

Adults have been found on cultivated strawberries and raspberries, on wild species of rose, and wild Rubus species such as Himalayan blackberry, salmonberry, and thimbleberry. They feed on the fruit and leaves of host plants.

Adult weevils emerge in April/May to mate. Weevil grubs feed and grow inside the buds of host plants, then emerge as adult weevils within a month. These weevils have one generation per year. Adult weevils can be found in host plants until temperatures start to drop in the fall.

How to Identify

The Strawberry blossom weevil is a small black beetle, between 2-3 mm long. They have an armored body with ridges going down their backs and a thin, downwards curved snout that is 1/3 of their body length.

Larvae mature inside flower buds and exit the buds when they are ready to pupate in leaf litter below the host plant. You may be able to find them by looking inside dead flower buds. The body is 1-2 mm long and milky-white with a tan head at one end.

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Prevention is the best approach.

prevention tips

 

If you see a weevil or find evidence of weevil damage on your property, do not move soil, leaf litter, or any potential host plants off your property.

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