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Shothole Borers in California @ISHB_update

Invasive shothole borers (ISHB) are small, non-native, beetles that bore into trees and introduce fungi, resulting in damage or death of thousands of CA trees.

Joined January 2021
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The ISHB Online Course has been accredited by the California Department of Pesticide Regulation (1.0 hour Other) and the Western Chapter International Society of Arboriculture (1.0 CEU TW, CA, MS, and BCMA-S) for 2026 and is now available again at campus.extension.org/course/….
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At this week's 131st Annual Meeting of #CSACAM, #UCANR and #CDFA are partnering to share information on efforts to protect California's agriculture and natural resources against invasive species and other threats.
At UC ANR's booth at the CSAC Annual Meeting representatives from UC Cooperative Extension, UC Integrated Pest Management, the California Department of Food and Agriculture, and CAL Fire stand ready to discuss issue affecting California agriculture and natural resources.

ALT At UC ANR's booth at the CSAC Annual Meeting representatives from UC Cooperative Extension, UC Integrated Pest Management, the California Department of Food and Agriculture, and CAL Fire stand ready to discuss issue affecting California agriculture and natural resources.
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2025 Goldspotted Oak Borer virtual Symposium. Thursday, December 4, 2025 8:00 AM - 12:30 PM Registration is required but is FREE. View more information including draft agenda at the online registration page. surveys.ucanr.edu/survey.cfm…
GSOB adult and larvae by Stacy Hishinuma, USDA - US Forest Service

ALT GSOB adult and larvae by Stacy Hishinuma, USDA - US Forest Service
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Dr. Beatriz Nobua-Behrmann will share insights on invasive boring insects impacting our urban forest at The Landscape Expo in Anaheim beginning at 8 am on Thursday, November 13th. Also checkout the UC Cooperative Extension and UC Integrated Pest Management booths!
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If you missed it or you want to review what was covered, check out this edited recording of the Invasive Shothole Borers - Fusarium Dieback Symposium at youtu.be/IewcIOnQr4g.
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Representatives from UC Agriculture and Natural Resources, California Department of Food and Agriculture and County of Los Angeles ACWM shared information on pest and disease threats to California ag and urban forests at the League of California Cities Annual Conference and Expo.
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Coming soon - 4th Annual ISHB-FD Symposium. See full details at: ucanr.edu/site/invasive-shot… 025 Invasive Shothole Borers – Fusarium Dieback Symposium 📷📷 September 23, 2025 📷📷 In-person or Online (via Zoom) 📷📷 Register here: surveys.ucanr.edu/survey.cfm…
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A Plague of Pests Is Coming for California. Here’s How to Stop It. Is it wise to use one organism to combat another invasive one? nytimes.com/2025/07/02/opini…
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Take a close look at the recording of the "cutting-edge" June 13 Invasive Species Lunchtime Talk - Palms and Eucalyptus Under Threat in the Golden State Presented by Dr. Eric Middleton, UC Cooperative Extension youtu.be/tQHuNC8HEag
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Catch the recording of the June 12 Invasive Species Lunchtime Talk - The Fast and the Furriest: Rats, Traps, and Winning the Race Presented by Dr. Niamh Quinn, UC Cooperative Extension youtu.be/MFOMiuGG7Zs
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The recording of the June 11 Invasive Species Lunchtime Talk - Don't Move a (Golden) Mussel Presented by Martha Volkoff, California Department of Fish and Wildlife is now available at youtu.be/HlYLgrEKGeQ
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View the recording of the June 10 Invasive Species Lunchtime Talk - Anticipating the Next Invasive Threat to California Presented by Dr. Mark Hoddle, UC Riverside youtu.be/rFmiu-lVY9c
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Check out the recording of the June 9 Invasive Species Lunchtime Talk - Formosan Subterranean Termites: Will Your House Be Their Next Meal? Presented by Dr. Siavash Taravati, UC Cooperative Extension youtu.be/HhlQdZXaJ5o
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The Good, the Bad and...Hey, we're talking about insects, not the volunteers from UC Master Gardeners, LA County ACWM, and UC ANR who shared knowledge and fun with thousands of visitors this weekend at the Natural History Museum of Los Angeles County 2025 Bug Fair!
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ISHB experts met in Felton with landowners and representatives from conservation groups, agencies and other concerned parties to share knowledge and discuss management options related to the new species of invasive shothole borers infesting trees in Santa Cruz County.
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Join UC IPM for a free webinar on the invasive Mediterranean Oak Borer (MOB) and other important oak tree pests on April 10, 2025 from 6:00 pm to 7:30 pm. Register at ucanr.zoom.us/webinar/regist… ucanr.edu/blog/pests-urban-l…
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In Northern California? Join us April 8 at the North Bay Pest Fest 2025 at the Petaluma Veteran's Memorial Building to learn about Invasive Shot Hole Borer (ISHB), Mediterranean Oak Borer (MOB), and other wood boring insects of forestland landscape trees.
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Southern California Oak Pest & Disease Workshop March 21, 2025 8:30 am - 12:00 pm In person and/or online $25 Registration fee CEUs approved from DPR and ISA Register at surveys.ucanr.edu/survey.cfm…
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UC ANR advisors Drs. Beatriz Nobua-Behrmann and Chris Shogren led a workshop on Goldspotted Oak Borer and other oak pests and diseases for tree professionals from the Disneyland Resort and various partner organizations at Anaheim’s Oak Canyon Nature Center.
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Invasive Species captured lots of attention at International Sportsmen's Expo in Sacramento. At the California Firewood Task Force booth, reps of CDFA, CAL FIRE, UC ANR and UC Davis shared info on invasive tree pests. Other agencies addressed invasives such as golden mussels.
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