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 a Quarantine in Sacramento County, California

Country: United States


Bactrocera dorsalis (Oriental Fruit Fly): APHIS Establishes a Quarantine in Sacramento County, California

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


On September 22, 2023, 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 Sacramento County, California. This action is in response to the confirmed detections of eight adult male OFF from various sites in the cities of Sacramento and Rancho Cordova by CDFA between September 12 and September 17, 2023. CDFA confirmed one additional male OFF from Rancho Cordova on September 19 and one unmated female OFF from Sacramento on September 20. All were from traps in various types of trees in residential areas.

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 quarantine area, which encompasses 105.9 square miles of Sacramento County. There is no commercial agriculture in the quarantine area. APHIS is working with CDFA and the Sacramento County Agricultural Commission to respond to these detections following program guidelines for survey, treatment, and regulatory response.

The establishment of this quarantine area is reflected on the APHIS fruit fly website, which contains a description of all current federal fruit fly quarantine areas.

Under IPPC standards, Bactrocera dorsalis  is a transient pest under eradication that is present only in four areas in California. This species is not widely distributed and is under official control in the United States.

Posted Date: Sept. 29, 2023, 4:09 p.m.