Raspberry Crown Borer
ID
3104-1561
Description
Larva: White, grub like, 1/4 to 1 1/4 inches long. Egg: Oval, deep reddish brown, about 1/16 inch long, laid under surface of leaf. Adult: Clear winged moth that resembles a common wasp; black body crossed by yellow bands.
Left Raspberry Crown Borer adult. Right Larva and damage. Both photos: University of Georgia Plant Pathology Archive, University of Georgia, Bugwood.org
Common Host Plant(s)
Blackberry, dewberry, and raspberry.
Damage
In fall the young larvae burrow into the bark of plants, near the soil. Older larvae hollow out crowns
of plants.
Distribution
Northern part of United States, but can occur in Virginia.
Cultural Control
Remove and destroy infested canes and crowns in early spring or fall.
Organic/Biological Control
No known organic/biological control known for raspberry crown borer at this time.
Chemical Control
Use a registered insecticide drench crowns and lower 2 feet of canes between October 1 and March 1.
Rights
Virginia Cooperative Extension materials are available for public use, re-print, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.
Publisher
Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University, and the U.S. Department of Agriculture cooperating. Alan L. Grant, Dean, College of Agriculture and Life Sciences; Edwin J. Jones, Director, Virginia Cooperative Extension, Virginia Tech, Blacksburg; Jewel E. Hairston, Administrator, 1890 Extension Program, Virginia State, Petersburg.
Date
April 25, 2011