Official Pest Report

Official Pest Reports are provided by National Plant Protection Organizations within the NAPPO region. These Pest Reports are intended to comply with the International Plant Protection Convention's Standard on Pest Reporting, endorsed by the Interim Commission on Phytosanitary Measures in March 2002.

Bactrocera dorsalis (Oriental Fruit Fly): APHIS Establishes an Quarantine in Santa Clara County, California

Country: United States


Bactrocera dorsalis (Oriental Fruit Fly): APHIS Establishes an Quarantine in Santa Clara County, California

Richard Johnson, Fruit Fly National Policy Manager, at (301) 851-2109 or


Effective September 30, 2021, the Animal and Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) established an Oriental fruit fly (Bactrocera dorsalis or OFF) quarantine in the San Jose area of Santa Clara County, California. This action is in response to the confirmed detections of six adult male OFF from the San Jose area by CDFA between September 13 and September 24, all from traps in various types of fruit trees in residential areas. By October 4, CDFA confirmed the seventh male OFF in the vicinity of the earlier finds, which expanded the quarantine further.

APHIS is applying safeguarding measures and restrictions on the interstate movement or entry into foreign trade of regulated articles from the area to prevent the spread of OFF to non-infested areas of the United States. In cooperation with CDFA, APHIS is establishing a new quarantine area, which, with the October 4 expansion, encompasses approximately 115 square miles of Santa Clara County. There are only eight acres of commercial agriculture in the quarantine area. The commodities include eggplants, peppers, squash, and tomatoes. APHIS is working with CDFA and the Santa Clara County Agricultural Commission to respond to these detections following program survey and treatment protocols.

The establishment of this quarantine area is reflected on the following website, which contains a description of all current Federal fruit fly quarantine areas:

Under IPPC standards, Bactrocera dorsalis is a pest that is present only in one area in California. This species is not widely distributed and is under official control in the United States.”

Posted Date: Nov. 2, 2021, 10:01 a.m.