University of California Cooperative Extension

Invasive shothole borers (ISHB) are small, non-native, beetles that bore into trees. The invasive. When the beetles tunnel into tree trunks and branches, they introduce fungi that cause a tree disease called Fusarium dieback (FD). The ISHB-FD pest-disease complex is responsible for the death of thousands...

While we can't replace time spent in the field, you can learn the basics about invasive shot hole borers with our ISHB eXtension Training! First time users will be asked to create a free account. https://ucanr.edu/sites/pshb/For_More_Information/Trainings/

The goldspotted oak borer (GSOB) is an invasive beetle that attacks and kills mature oak trees. Beetle larvae bore under the bark and feed on and damage the trees' nutrient and water-conducting tissues. Trees die after several years of injury inflicted by multiple beetle generations. Experts believe...