The Goldspotted Oak Borer (GSOB), Agrilus auroguttatus, has been detected in Marshall Canyon along the multi-use trail and surrounding canyon areas. This invasive pest lives beneath the bark of oak trees and is contributing to ongoing oak tree mortality across federal, state, private, and Tribal lands throughout parts of Southern California, including San Diego, Riverside, Orange, San Bernardino, Los Angeles, and Ventura counties.
Treatment of GSOB-infested trees has been conducted by Los Angeles County Fire Department Forestry Division/Invasive Pest Management Unit, the Agricultural Commissioner/Weights and Measures, and the Los Angeles County Department of Parks and Recreation.
To read more about the Goldspotted Oak Borer visit: gsob.org or if you suspect a Goldspotted Oak Borer infestation in your area, report it HERE.
