Photo by Pest and Diseases Image Library, Bugwood.org
The sixtoothed spruce bark beetle (Pityogenes chalcographus) attacks many coniferous trees and can transmit blue-stain fungi. It is native to Europe and northern Asia. It has been intercepted numerous times in the United States, but is not known to be established here. Surveys are conducted because of the presence of potential host material in Wyoming and this pest is attracted to the same lure as other targeted bark beetles. To date, it has not been found in Wyoming. Forty-one traps have been placed throughout twelve counties in Wyoming since 2010.
The sixtoothed spruce bark beetle survey is conducted by the Animal and Plant Health Inspection Service, Plant Protection and Quarantine. A Lindgren funnel trap with host attractant is placed on or near the host plant from May until September. If suspects are found they are sent to a regional entomologist for further identification.