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walnut twig beetle (Pityophthorus juglandis)

walnut twig beetle (Pityophthorus juglandis)

Researchers studying walnut twig beetles (Pityophthorus juglandis) discovered a potential repellent for the pest when they ran out of one adhesive for sticky traps and switched to another, and suddenly the beetles were no longer attracted to the traps. (Photo by Steven Valley, Oregon Department of Agriculture, Bugwood.org) 

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