Ongoing research

Invasive Shothole Borers: Page

White Alder

Native reproductive host Symptoms: staining Other pests: UC IPM Resources: USDA Profile Staining and PSHB entry-hole on white alder.
View Page
Invasive Shothole Borers: Page

Olive

Susceptible to Fusarium dieback Symptoms: gumming, staining Other pests: UC IPM Resources: USDA Profile Olive, a non-reproductive host, responds to PSHB attack with gumming symptoms.
View Page
Invasive Shothole Borers: Page

Shiny Xylosma

Reproductive host Symptoms: staining Other pests: UC IPM Resource: USDA Profile PSHB symptoms on a shiny Xylosma, also called dense logwood.
View Page
Invasive Shothole Borers: Page

ISHB Workgroup

We are a joint-agency and NGO stakeholder group working in collaboration to coordinate the research, monitoring, management, regulation, and outreach and education related to the Polyphagous and Kuroshio Shothole Borers/Fusarium Dieback complex and other emerging pests of wildland and urban forests.
View Page
Invasive Shothole Borers: Page

News & Events

Word is spreading fast about ISHB, hopefully faster than the beetles themselves. Visit our US News Archive, International News Archive, or ISHB YouTube Channel to see what's being said.
View Page
Invasive Shothole Borers: Page

Contacts

If you would like to speak with someone about Polyphagous shothole borer/Fusarium dieback (PSHB/FD) or Kuroshio shothole borer/Fusarium dieback (KSHB/FD), contact your county Agricultural Commissioner or University of California Cooperative Extension.
View Page
Invasive Shothole Borers: Page

California Sycamore

Native reproductive host Symptoms: staining, frass Other pests: UC IPM Resources: USDA Profile Wet staining on California sycamore in response to PSHB attack.
View Page
Invasive Shothole Borers: Page

Acacia

Reproductive host Symptoms: gumming Other pests: UC IPM Resources: USDA Profile Acacia species respond to PSHB activity by gumming.
View Page
Invasive Shothole Borers: Page

American Sweetgum

Reproductive host Symptoms: staining, gumming Other pests: UC IPM Resources: USDA Profile Staining on American sweetgum caused by PSHB.
View Page