Oklahoma State University

Current Status of the Red Imported Fire Ants in Oklahoma


The red imported fire ant was recorded in parts of Oklahoma as early as 1985, but was probably present in the state before that time. It has been found at one time or another in at least 40 Oklahoma counties. Twenty counties in Oklahoma now come under federal quarantine, with special requirements for the shipment of certain goods out of those counties. Click here for Federal Quarantine Regulations regarding the red imported fire ant.

Current Status in Oklahoma as of:  




Current Status in the US as of 3/13/2009 (Source USDA)




The distribution and spread of RIFA in Oklahoma are evaluated on a continuing basis and the infestation map is updated regularly. If you think you have red imported fire ants, we need your help! Please contact:

Plant Disease & Insect Diagnostic Lab
Entomology and Plant Pathology
127 Noble Research Center
Stillwater, OK 74078
Phone: (405) 744-5527
E-mail: fireants

Be prepared to collect a small sample of the ants to send in to OSU for positive identification. You can aid Oklahoma State University and the Oklahoma Department of Agriculture, Food, and Forestry in tracking fire ant infestations in Oklahoma. By doing so, you will help us to direct research and education efforts where they are needed most.


Division of Agricultural Sciences and Natural Resources