skip page navigationOregon State University
White Pine Weevil
Some documents on this site require that you have Adobe Acrobat Reader installed (3.x or above). Click the Get Acrobat Reader icon and download a free copy and install it.

Please Read: This site contains information about using pesticides. Pesticides can be dangerous if used improperly or carelessly. Always follow label instructions. The pesticide product label is the final word on the safe and legal use of pesticides. Questions about pesticide toxicity can be explored at the National Pesticide Information Center (NPIC). Control suggestions are intended for users in the state of Oregon, USA. Others should consult with local experts before relying solely on this information.

Life stages of white pine weevil
Distribution of the hosts of white pine weevil in North America. White pine occurs mainly in the east (horizontal hatching) whereas spruce occurs in the west. Blue and sitka spruce are common hosts along the Pacific coast of Oregon, Washington and British Columbia.
Adult weevil. Note irregular white patches on wing covers
Chip cocoons, under the bark of twigs
Useful Links

National Pesticide Information Center

Iowa State University Entomology Internet Resources

OSU Extension Service

OSU Extension & Experiment Station Communications (Publications)

Oregon State University, Corvallis, Oregon 97331

Contact: Neil Bell, Community Horticulturalist, OSU Extension Service, 3180 Center Street NE Room 1361, Salem, OR 97301; 503-361-2671; e-mail: neil.bell@oregonstate.edu or contact: Jack DeAngelis, Extension Entomologist (ret.) at getinfo@livingwithbugs.com.

Copyright 2005 Oregon State University Disclaimer