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Posts Tagged: borer

Reducing the Spread of Invasive Pests in Cut Wood

Figure 1. Firewood left behind from tree care operations can harbor pests. (Credit: Karey Windbiel-Rojas)

[Originally published in the Fall 2018 issue of the Green Bulletin. Modified slightly from original.] Invasive insects and diseases are threatening numerous tree species throughout the country. Impacts include tree mortality, destruction of forest and...

Posted on Tuesday, November 6, 2018 at 2:41 PM
Tags: arborist (1), borer (4), disease (2), firewood (2), invasive (1), pest (2), tree (1), UCIPM (1)
Focus Area Tags: Pest Management Yard & Garden

Invasive Spotlight: Shot Hole Borers and the Diseases They Carry

Discolored patches on bark from polyphagous shot hole borer adults boring into a tree trunk. (Credit: Akif Eskalen Lab, UC Riverside)

Shot hole borers are tiny insects the size of a sesame seed that don't look particularly harmful, but don't let their diminutive size fool you. Two of these borers are invasive—the polyphagous shot hole borer and the Kuroshio shot hole borer. They...

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Posted on Thursday, June 7, 2018 at 10:00 PM
Focus Area Tags: Pest Management Yard & Garden

Invasive Shot Hole Borers Threatening Trees in Southern California

Fig.1. Adult female Polyhagous shot hole borer (Euwallaceae sp.).

[From the December 2016 issue of the UC IPM Green Bulletin] The Polyphagous shot hole borer (PSHB) (Fig. 1) and Kuroshio shot hole borer (KSHB) are invasive wood-boring beetles that attack dozens of tree species in Southern California, including...

Posted on Wednesday, January 4, 2017 at 1:10 PM
Tags: borer (4), control (1), detection (1), dieback (2), fungus (2), fusarium (2), graphium (1), hosts (1), KSHB (1), Kuroshio (2), management (1), paracremonium (1), polyphagous (2), PSHB (2), shot hole (1), trees (2)

Invasive Pest Spotlight: Ambrosia Beetles

Male (left) and female walnut twig beetles. [L. Strand]

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,...

Posted on Wednesday, February 24, 2016 at 10:36 AM
 
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