CISR: Olive Fruit Fly

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CISR: Olive Fruit Fly

Friday, December 18th, 2009

The Situation: Olive fruit fly is the major insect pest of olive crops worldwide. It is in the insect family Tephritidae that contains many well know pests species such as the Mediterranean fruit fly. It has impacted olive production since biblical times. In some parts of the world, olive fruit fly is responsible for losses […]

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: 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: Citrus Leafminer

Thursday, October 22nd, 2009

The Situation: Originating in Asia, the citrus leafminer (CLM) was first discovered in Florida in 1993.  These small moths rapidly became a significant pest, with infestation rates of up to 90% in some areas in Florida being observed within the year of introduction.  By 1995, the citrus leafminer was discovered in Texas, Central America, western […]

CISR: Western Flower Thrips

Thursday, October 22nd, 2009

The Situation: In southern California, the native western flower thrips (WFT) Frankliniella occidentalis is the most common vector responsible for transmission of an exotic plant virus, Tomato Spotted Wilt Virus (TSWV). The pathogen was discovered on tomatoes in 1915 in Australia, and has been spreading around the world ever since. TSWV is a tospovirus (Bunyaviridae) […]

CISR: Africanized Honey Bee

Thursday, October 22nd, 2009

The Situation: Africanized honey bees (AHB) are a hybrid between European and African bee subspecies which were inadvertently released in Brazil in the 1950s. They have spread to the south as far as northern Argentina and to the north into the United States, as well as throughout much of South and Central America. They entered […]

CISR: Ash Whitefly

Thursday, October 22nd, 2009

The Situation: Ash whitefly represents an outstanding biological control success in California. Ash whitefly was first introduced into California in the late 1980s and was a significant pest of fruit and shade trees such as ash, pear and pomegranate. In the absence of natural enemies, ash whitefly populations exploded out of control. The pest originated […]

CISR: Silverleaf Whitefly

Thursday, October 22nd, 2009

The Situation: When the silverleaf whitefly (SLW) (also known as Bemisia tabaci strain B) struck southern California’s desert valleys in fall 1991, clouds of these tiny insects could be seen moving across the region, which produces 90 percent of the fall and winter vegetables grown in the U.S. Research conducted at the University of California […]

CISR: Giant Whitefly

Thursday, October 22nd, 2009

The Situation: The giant whitefly, a pest of over 50 common ornamental plants, was discovered in southern San Diego County in 1992. It continues to extend its range northward into California where it was found around San Luis Obispo on the central Coast by the late 1990’s, and by around 2005 this pest was established […]

CISR: Pea Leafminer

Thursday, October 22nd, 2009

The Situation: A new biotype of the pea leafminer was introduced in Northern California and is expanding rapidly into Central and Southern California. Already this insect has become a major pest of vegetable crops from Monterey to Ventura Counties. It has spread as far north as Placer County and as far south as Las Vegas […]

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Center for Invasive Species Research

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