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 Removes the Quarantine in Sacramento County, California

Country: United States


Bactrocera dorsalis (Oriental Fruit Fly): APHIS Removes the Quarantine in Sacramento County, California

Richard Johnson, Fruit Fly National Policy Manager, at (301) 851-2109 or and Avraham Eitam, Assistant National Policy Manager, at (614) 205-4565 or


On May 31, 2024, the USDA’s Animal and Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) removed the Oriental fruit fly (Bactrocera dorsalis; OFF) quarantine in Sacramento County, California, after three OFF life cycles elapsed with no additional detections in this area. This action releases the 106 square miles of the Sacramento County quarantine, which contained no commercial agriculture.

On September 22, 2023, APHIS and CDFA established an OFF quarantine in Sacramento County following 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. APHIS restricted the interstate movement of regulated articles from this area to prevent the spread of OFF to non-infested areas of the United States and has worked cooperatively with CDFA and the Sacramento County Agricultural Commissioner to eradicate this transient OFF population through various control actions per program protocols. APHIS and CDFA selected the quarantine release date based on a degree-day model from the date of the last detection.

The removal of this quarantine area is reflected on the APHIS exotic fruit flies website, which contains a description of all current federal fruit fly quarantine areas. APHIS will publish a notice of this change in the Federal Register.

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

Posted Date: June 18, 2024, 2:42 p.m.