University of Minnesota Extension
Menu Menu

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

Raspberry crown borer
Photo Credit: University of Georgia Plant Pathology Archive,

Raspberry crown borer (raspberry root borer)
Pennisetia marginata
Size: 1/2 to 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.
Give us your feedback
  • © 2015 Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy