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Guava Fruit Flies Found in Santa Clara County, Eradication Program To Begin

SANTA CLARA COUNTY, CALIF. – An infestation of Guava Fruit Fly was discovered on July 3, 2013 in the City of San Jose. Three flies were trapped near one another in the Mayfair Neighborhood just north of the intersection on Highway 101 and 680.  The identification of these insects was confirmed by the California Department of Food and Agriculture (CDFA).  According to State protocol, the trapping of two or more flies resulted in an emergency proclamation by the California Secretary of Agriculture authorizing immediate implementation of an eradication program.
The planned eradication treatments are scheduled to commence on Wednesday, July 17, 2013 and will involve the “male attractant” technique using ground-based, spot applications of insecticide and pheromone lure.  This gelatinous mixture is applied as small, dollar-sized spots (“bait stations”) on street trees and utility poles.  The male fruit flies are attracted to these spots because of the lure, and die from feeding on the minute amount of insecticide in the mixture.  The treatments are applied at heights that are typically inaccessible and cause minimal disruption to the public.
CDFA workers will treat an area of approximately 13 square miles as part of this eradication effort.  The treatment area is roughly bounded by Berryessa Road on the north, White Road on the east, Tully Road on the south, and 14th Street on the west.
Guava Fruit Fly is an exotic insect pest found in India, Pakistan, Nepal, Sri Lanka, and Thailand, and has the potential to become a major pest of citrus, stone fruits, tomato, and several kinds of tropical and subtropical fruits.
Guava Fruit Fly is not native to America. Infestations of Guava Fruit Fly likely result from the introduction of contraband fruit.  In the past few weeks, this invasive pest has also been found in Los Angeles County. 
Media Contacts: Joseph Deviney, Agricultural Commissioner (408) 642-0440; Michelle Thom, Deputy Agricultural Commissioner (408) 918-4615
Posted: July 15, 2013