Integrated Pest Management Guide

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STRAWBERRY ROOT WEEVIL, Otiorynchus ovatus (L.)

Pest Status: This smaller weevil is often found with black vine weevil and causes damage if numerous. It has only been found in beds not flooded at harvest or during dormancy.

Life cycle and feeding habits: Adults are about 4 - 5 mm (1/5 inch) long (half the size of the black vine weevil). Adults are shiny black with thinly scattered yellowish short hairs, reddish-brown antennae and legs, and coarse, deep, punctures on the wing covers. Like the black vine weevil, the wings are fused making the weevils flightless. No males have been found. Strawberry root weevils have a life cycle similar to black vine weevils. Larvae feed on small roots and on bark of larger roots in a manner similar to the larvae of black vine veevil. Like the black vine weevil, other hosts include some small fruits, fruit trees, shrubs, and many conifers in nurseries and plantations.

Monitoring and control: Techniques used for black vine weevil will also help to manage strawberry root weevil. The insecticide registered for control of strawberry root weevil is most effective when applied on a calm, warm evening when adults are feeding on the foliage.


Strawberry root weevil