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Posts Tagged: borer
Invasive Spotlight: Shot Hole Borers and the Diseases They Carry
Shot hole borers are tiny insects the size of a sesame seed that don't look particularly harmful,...
Attached Files
Discolored patches on bark from polyphagous shot hole borer adults boring into a tree trunk. (Credit: Akif Eskalen Lab, UC Riverside)
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Invasive Shot Hole Borers Threatening Trees in Southern California
[From the December 2016 issue of the UC IPM Green Bulletin] The Polyphagous shot hole borer (PSHB)...
Attached Files
Fig.1. Adult female Polyhagous shot hole borer (Euwallaceae sp.).
Fig.2. Dead box elder tree.
Fig.3. Beetle gallery formation on box elder.
Fig.4. Sugar volcano symptoms on avocado.
Fig.5. Staining symptoms on coast live oak.
Fig.6 Gumming symptoms on Calpurnia aurea.
Fig.7. Frass symptoms on avocado.
Fig.8. Fungal colonization on a box elder tree trunk.
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Invasive Pest Spotlight: Ambrosia Beetles
![Male (left) and female walnut twig beetles. [L. Strand]](http://ucanr.edu/blogs/UCIPMurbanpests//blogfiles/34720small.jpg "Male (left) and female walnut twig beetles. [L. Strand]")
Today's post for National Invasive Species Week highlights two ambrosia beetles that are...
