Residents learned how to examine oak firewood this winter and how watch their black oaks and coast live oaks this spring for signs that they may harbor the insect. Firewood or trees suspected of being infested should be reported to (951) 659-3850, the story said. More information is available at the UC Cooperative Extension GSOB website.
More trees infested with goldspotted oak borer
Jan 24, 2013
When GSOB emerges from underneath bark, they leave "D"-shaped exit holes.