ForesTree - Detail Information

Pest and Disease Information


Affected Trees:
California Black Oak, Canyon Live Oak, and Coast Live Oak

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Agrilus auroguttatus
Gold-spotted Oak Borer


Description of Pest/Symptoms

Agrilus auroguttatus (formerly called Agrilus coxalis) is killing oak trees by the thousands in Southern California, according to a report by the U.S. Forest Service. Forest Service entomologists previously had not linked the pest to tree deaths in the region. The beetle is so rare that officials don't know how to stop its spread. Affected trees show evidence of staining on the main bole and larger branches. Woodpeckers are attracted to infested trees. Trees will display premature leaf drop and dieback, while crowns will progressively thin as health declines.

Information on this Pest

pdf Gold-spotted Oak Borer Tree Notes # 31

pdf Oak Mortality

pdf Tree Mortality from Gold-spotted Oak Borer

 yellow arrow Gold-Spotted Oak Borer

pdf Gold-spotted Oak Borer Field Identification Guide

pdfCalifornia Forest Insect and Disease Training Manual

General Information and Contacts

 yellow arrow CA Agricultural Commissioners

 yellow arrow CA Cooperative Extensions

 yellow arrow Cal Fire - California Forest Improvement Program (CFIP)

 yellow arrow Cal Fire - Contact an Urban Forestry Advisor

 yellow arrow Cal Fire - Forestry Assistance

 yellow arrow Cal Fire - Pest Management

 yellow arrow Cal Fire - Vegetation Management

 yellow arrow California Department of Food and Agriculture

 yellow arrow California National Forests - Offices

 yellow arrow California ReLEAF

 yellow arrow California Urban Forests Council - Regional Councils

 yellow arrow Fire Safe Council - Find a Local Council

 yellow arrow Forest Health and Protection

 yellow arrow Forest Pest Conditions Pacific Southwest Region

 yellow arrow Southern California Mountain Area Safety Taskforce

General Grant Resources

yellow arrow California Oak Mortality Task Force - grants

yellow arrow California ReLEAF Grants

yellow arrow Fire Safe Council Grants Clearing House

yellow arrow Fuels Reduction Program

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