extensionpamphlet - Strawberry Root Weevil, Otiorhynchus...

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Strawberry Root Weevil, Otiorhynchus ovatus Samantha Swanhart Description: Life History and Feeding Patterns: Damage symptoms: Monitoring: Adults are approximately 5.5 mm long, shiny dark brown, and have long antennae. Mature larvae are approximately 8 mm long and creamy- white with yellow to brown heads. Strawberry root weevils are flightless. Larvae pupate in the soil in early spring, late adults in late spring to early summer. Adults tend to feed on foliage and deposit eggs in the soil near the host plant. They are nocturnal feeders, often hiding in debris underneath hosts. Larvae feed on roots. There is only one generation per year. Adults feed on leaf margins. Heavy infestations may cause serious injury to foliage of young conifers. Since larvae feed on roots, heavy infestations may cause girdling of root crowns, with subsequent wilting and death.
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Look for notching of leaf margins from mid June throughout the growing season. Examine the debris under host plants for adults, or place pitfall traps or trap boards to
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extensionpamphlet - Strawberry Root Weevil, Otiorhynchus...

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