Walnut Twig Beetle (IMAGE)

USDA Forest Service - Pacific Southwest Research Station

Walnut Twig Beetle

Caption

The walnut twig beetle excavates under bark and inoculates the tree with the Geosmithia morbida fungus, resulting in Thousand Cankers Disease.

Credit

Photo by Curtis Utley, CSUE, <a target="_blank"href="http://Bugwood.org">Bugwood.org</a>.

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