The Polyphagous Shot Hole Borer (PSHB) is a new pest in Southern California. This very small and hard to see boring beetle, from the group of beetles known as ambrosia beetles, drills into trees and brings with it a pathogenic fungus (Fusarium euwallacea), as well as other fungal species that may to help establish the colonies. The beetle is dark brown to black and tiny, with females between 0.07 [...]
Bark beetles bore through the protective bark of a tree to lay their eggs in the moist, living tissues. These beetles and the larvae they produce feed on this living tissue, cutting off the tree’s ability to transport water and nutrients. The shape of the tunnels created by adult beetles and their larvae as they feed are unique for each species of beetle. The principle gallery is created by the [...]
The glassy-winged sharpshooter, Homalodisca vitripennis (Germar), is a large leafhopper species native to the southeastern United States. It is one of the main vectors of the bacterium Xylella fastidiosa, a plant pathogen that causes a variety of plant diseases, including phony peach disease of peach and Pierce's disease of grape vector Pierce's disease.These sharpshooters are about 12 millimetres[...]
California's coast live oaks are facing a new threat: an irreversible and potentially fatal fungal disease spread by a formerly innocuous beetle. The western bark beetle, which was once considered a minor pest of the evergreen oaks, was recently found to be spreading a disease that researchers call "foamy bark canker disease" (Geosmithia pallida) to trees in half a dozen California counties.
In 1972, Kerry Ray started his journey in tree trimming by pruning the trees at his rental house in Reseda, California. He then volunteered to help his LAPD motor officer partner, Randy, trim his parents Ash tree. So, they went out and bought a Homelite chainsaw, climbing gear and a black/orange trucker's rope...