UCCE Master Gardeners of San Joaquin County
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UCCE Master Gardeners of San Joaquin County

Posts Tagged: polyphagous

Managing Invasive Shot Hole Borers in Southern California

Figure 1. Polyphagous shot hole borer. (Credit: Akif Eskalen)

[Originally published in the Fall 2018 issue of the Green Bulletin. Modified slightly from original.] Invasive wood-boring beetles are attacking hundreds of thousands of trees in southern California, including commercial avocados, and trees within urban...

Posted on Wednesday, October 24, 2018 at 10:00 AM
Tags: beetle (10), dieback (4), Dimson (2), Fusarium (4), invasive (46), IPM (64), ISHB (1), Nobua-Behrmann (1), pest (74), polyphagous (4), PSHB (3), shot hole (2), tree (16), UC IPM (223)
Focus Area Tags: Pest Management

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 (41), detection (2), dieback (4), fungus (4), fusarium (4), graphium (1), hosts (2), KSHB (1), Kuroshio (2), management (27), paracremonium (1), polyphagous (4), PSHB (3), shot hole (2), trees (10)

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
Tags: ambrosia (1), beetles (13), borer (4), fungus (4), fusarium (4), invasive species week (5), pest (74), polyphagous (4), PSHB (3), thousand cankers disease (4), UC IPM (223), walnut twig (2)

Exotic Pests Invade California Landscapes

Bagrada bug nymphs and adults.

[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...

Posted on Monday, April 14, 2014 at 4:23 PM
 
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