
University of California
Urban and Community Integrated Pest Management
Posts Tagged: walnut twig
Invasive Pest Spotlight: Ambrosia Beetles
![Male (left) and female walnut twig beetles. [L. Strand] Male (left) and female walnut twig beetles. [L. Strand]](http://ucanr.edu/blogs/UCIPMurbanpests//blogfiles/34720small.jpg)
Today's post for National Invasive Species Week highlights two ambrosia beetles that are detrimental to certain trees. Ambrosia beetles are highly specialized beetles that excavate tunnels in usually weakened or dead trees and cultivate fungal gardens,...
Exotic Pests Invade California Landscapes

[From the April 2014 issue of the UC IPM Green Bulletin newsletter] Over the last several decades dozens of exotic pests have invaded California landscapes, causing at least temporary havoc and sometimes severely affecting the aesthetic value of plants...