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Extension > Garden > Diagnose a problem > What insect is this? > Garden Pests > Flies, moths, wasps,and other insects with obvious wings - 1/4 to 3/4 inch long > Raspberry crown borer

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Raspberry crown borer (raspberry root borer)

Pennisetia marginata

Raspberry crown borer

University of Georgia Plant Pathology Archive,

Size: 1/2 - 5/8 inch long

Where/When: Females lay eggs on the underside of raspberry leaves in August.

Significance: Affected canes wilt during late summer and die the following year. Generally uncommon.

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