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Animal and Plant Health Inspection Service
U.S. Department of Agriculture

Thousand Cankers Disease Photo Gallery

Pest and Disease Identification

Figure 1
Wilting black walnut in the last stages of TCD.
 
Figure 2
Small branch cankers caused by G. morbida.
 
Figure 3
Exit holes made by adult WTB.
 
Figure 4
Walnut twig beetle-top and side view.
Steve Valley, Oregon Department of Agriculture from USFS Pest Alert: Thousand Cankers Disease, February 2013

 

Contact:
William Wesela
National Policy Manager
301-851-2229
E-mail: William.D.Wesela@aphis.usda.gov

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