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General information Email: gsobinfo@ucdavis.edu Outreach program information: Jan Gonzales Program Coordinator University of California Cooperative Extension 9335 Hazard Way, Suite 201 San Diego, CA 92123 (858) 822-7718 Email: jggonzales@ucanr.
To report firewood or trees suspected of being infested with GSOB: Call the GSOB Hotline (951) 659-8328 or use this online form. To request GSOB information materials and handouts: Contact Annika Nabors: ajnabors@ucanr.edu.
Dead oak trees damaged by GSOB exposure About Us Learn about the multi-agency GSOB Steering Committee and what is being done to help reduce this pest's impact and spread. Coordinating Workgroup Organizations Learn about about GSOB Coordinating Workgroup member organizations.
When the goldspotted oak borer (GSOB) was pinpointed as a major contributor to the dense oak tree mortality in San Diego County, there was virtually no information available about this non-native pest or how to manage it.
The goldspotted oak borer (GSOB), Agrilus auroguttatus (Coleoptera: Buprestidae), is a flatheaded borer beetle new to California that poses a significant threat to oak trees. The pest is native to southeastern Arizona, where it is found in oak woodlands.
