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.

Detections of Panicle Rice Mite, Steneotarsonemus spinki, in Lajas, Puerto Rico

Country: United States

Title: Detections of Panicle Rice Mite, Steneotarsonemus spinki, in Lajas, Puerto Rico

Brian Kopper, Eastern Regional Program Manager, at (919) 855-7318 or Valerie DeFeo, National Program Coordinator, at (301) 734-3393


On July 11, 2008, the Animal and Plant Health Inspection Service (APHIS) issued a Federal Domestic Quarantine Order to prevent the spread of  Panicle Rice Mite, Steneotarsonemus spinki (PRM). Specifically, this Federal Order restricts the interstate movement of all Oryzae spp. plants or plant parts, including O. sativa, cultivated paddy rice, O. latifolia weedy red rice, and plants or plant parts of Cyperus irea originating from Puerto Rico.

The 2008 National PRM Survey conducted by APHIS’s Plant Protection and Quarantine program and the Puerto Rico Department of Agriculture (PRDA) confirmed the presence of PRM on May 20, 2008, during field sampling in Lajas. Detections were found at an educational facility, as well as a rice research center. Both facilities produce rice seed for research only, not consumption. APHIS notified PRDA of this confirmed detection and is currently conducting surveys to delimit the infestation.

Due to PRM’s detection, interstate movement of regulated articles originating from Puerto Rico may only be allowed if: (1) the requirements of the Federal Order are met in full and (2) the owner or agent of the premises enters into a compliance agreement.

The PRM is a serious rice pest. Yield losses can range from 30 to 90 percent.

Under IPPC standards Steneotarsonemus spinki is considered to be present in the Commonwealth of Puerto Rico, but only in some areas where host crops are grown.


Posted Date: July 16, 2008, 9 a.m.