Ongoing research

United States Forest Service (USFS or US Forest Service) is an agency of the United States Department of Agriculture that administers the nation's 155 national forests and 20 national grasslands, which encompass 193 million acres California Department of Forestry and Fire Protection (CDF or CAL FIRE...

Webinar Title: Oak Woodland Restoration in Areas Impacted by the Goldspotted Oak Borer Date: Thursday, August 30, 2012 Time: 10:30 AM 12:00 PM Pacific Description: The goldspotted oak borer (GSOB; Agrilus auroguttatus) has killed tens of thousands of oak trees in San Diego County, leading to dramat...

California Oak Disease and Arthropod (CODA) Host Index Database (Website) Field Guide to Common Pests and Diseases of Oaks in California(Website/PDF) Goldspotted Oak Borer insert 2015 Forest Health Alert:Drought and bark beetle-caused tree mortality in California (PDF) FIDL: Forest Insect & Disease...

While the original infestation of goldspotted oak borer is centered around Cuyamaca Rancho State Park and the Descanso Ranger District of Cleveland National Forest in San Diego County, satellite infestations have emerged in Riverside, Orange, Los Angeles, and San Bernardino Counties.

New Resource! Invasive Tree Pests: Beware of This Costly Triple Threat! (English) (PDF) Trifold Brochure (English)(PDF) Trifold Brochure (Spanish)(PDF) Goldspotted Oak Borer Infested Wood Best Management Practices (Factsheet; English) (PDF) Best Management Practices (BMPs) for Preventing the Spread...

Goldspotted Oak Borer (GSOB) infestations have many impacts. Attacks affect the regional oak tree population, contributing to their death. All those who value oak trees, whether it be for cultural, environmental or aesthetic purposes, are impacted by the rise in oak tree mortality.

The Goldspotted Oak Borer (GSOB) Steering Committee is comprised of Federal, State and Local agencies having regulatory responsibility for forest health and protection of natural resources within the County of San Diego.

GSOB infestations have killed at least thousands of oaks in Southern California, damaging habitat for many important species, reducing cultural resources and natural beauty, and depriving California of an iconic landscape feature.

Since oak mortality in east San Diego County was attributed to Goldspotted Oak Borer (GSOB) in 2008, infestations have spread throughout the county and beyond. Satellite GSOB infestations were identified in Riverside County in 2012, Orange County in 2014, and Los Angeles County in 2015.

The adult goldspotted oak borer (GSOB) Agrilus auroguttatus is a small, bullet-shaped beetle about 10mm (0.4 in.) long and has six golden yellow spots on its dark green forewings. Mature larvae are white, legless, slender and about 18mm (0.75 in.