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University of California
Cooperative Extension San Joaquin County
Posts Tagged: UC IPM Statewide Integrated Pest Management Program
Jackson Audley: A Case Study with the Walnut Twig Beetle
So tiny and so destructive. It's about the size of a grain of rice but it's a killer. That's the walnut twig beetle, Pityophthorus juglandis, which in association with a newly described fungus, Geosmithia morbida, causes thousand cankers disease,...
The walnut twig beetle is about the size of a grain of rice. (Photo by Kathy Keatley Garvey)