APHIS Removes Oriental Fruit Fly (Bactrocera dorsalis) Quarantine in Riverside and San Bernardino Counties, California

FOR INFORMATION AND ACTION
DA-2025-24
June 23, 2025

Subject: APHIS Removes Oriental Fruit Fly (Bactrocera dorsalis) Quarantine in Orange County, California

To: State, Tribal, and Territory Agricultural Regulatory Officials

On June 9, 2025, 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 Orange County, California, designated the Garden Grove quarantine. This action released 88 square miles including 4.5 acres of commercial agriculture from quarantine. Release from quarantine occurred after three generations elapsed since the date of the last detection, based on a degree-day model.

APHIS and CDFA established the Garden Grove OFF quarantine on October 31, 2024, and expanded it on November 4, in response to detections confirmed between October 23-29 of eight male OFF in the cities of Garden Grove and Santa Ana from traps in fruit trees in residential areas.

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. APHIS worked cooperatively with CDFA and the Orange County Agricultural Commissioner to eradicate this transient OFF population through various control actions per program protocols.

The APHIS Exotic Fruit Flies web page contains a description of all current Federal fruit fly quarantine areas. APHIS will publish a notice of this change in the Federal Register.

For additional information, you may contact:
Catherine Marzolf
National Policy Manager
386-666-9932
catherine.a.marzolf@usda.gov 

 

/s/
Matthew A. Rhoads
Acting Deputy Administrator
Plant Protection and Quarantine