An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Red Imported Fire Ant

Scientific Name

Solenopsis invicta Buren, 1972 (ITIS)

Common Name

Red imported fire ant (RIFA)


Solenopsis wagneri Santschi (ITIS)

Native To

South America (Jemal and Hugh-Jones 1993)

Date of U.S. Introduction

Probably between 1933 and 1945 (Jemal and Hugh-Jones 1993)

Means of Introduction

Possibly introduced in ships' ballast (Fitzpatrick et al. 2007)


Can attack and cause painful stings on humans, pets, and livestock (Jemal and Hugh-Jones 1993)

Red Imported Fire Ant
Image use policy

Red Imported Fire Ant, Adult USDA, APHIS, Plant Protection and Quarantine Archives.

Find more images


Distribution / Maps / Survey Status

Federally Regulated


Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Council or Task Force
Federal Government
International Government
State and Local Government