CISR: Eucalyptus Leaf Beetle

CISR: Eucalyptus Leaf Beetle

Wednesday, November 4th, 2009

The Situation: A large number of introduced Eucalyptus pests have invaded California over the last ten years, including boring beetles, psyllids, gall forming wasps, and leaf chewing beetles in the family Chrysomelidae. The blue gum psyllid was the first to become a pest of ornamental eucalyptus, silver-leaved mountain gum or baby blue gum, and Eucalyptus […]

CISR: Redbay Ambrosia Beetle and Laural Wilt

Wednesday, October 28th, 2009

The Situation: In 2002, a non-native insect, the redbay ambrosia beetle, Xyleborus glabratus (Coleoptera: Scolytidae), was first detected in the United States near Port Wentworth, Georgia. The beetle was likely introduced in untreated wooden packing material, such as crates and pallets, imported through the shipment of goods from its native range in southeast Asia (e.g., […]

CISR: Goldspotted Oak Borer

Thursday, October 22nd, 2009

The goldspotted oak borer (GSOB) was first detected in 2004 in San Diego Co., California by the California Department of Food and Agriculture during a survey for exotic woodborers.  In 2008, it was found in the same county attacking coast live oak, Quercus agrifolia, canyon live oak, Q. chrysolepis, and California black oak, Q. kelloggii, […]

CISR: Eucalyptus Longhorned Borer

Wednesday, October 21st, 2009

The Situation: Approximately 90 of the more than 700 species in the tree genus Eucalyptus have been introduced into North America over the last 150 years. Eucalyptus spp. are native to Australia and New Guinea. Many residents of California find the growth form, evergreen foliage, floral show, and other horticultural qualities such as drought tolerance […]

CISR: Elm Leaf Beetle

Wednesday, October 21st, 2009

The Situation: Elms are a common shade tree planted throughout the U.S. and are valued for their large, high canopies and the shade they provide. The elm leaf beetle was accidentally introduced into the U.S. in the 1830s and is now one of the most important urban forest pests in California. Damage and Economic Impact: […]

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Center for Invasive Species Research

Director of CISR
E-mail: mark.hoddle@ucr.edu
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E-mail: michael.lewis@ucr.edu