National Invasive Species Information Center around the 1930s http://www.invasivespeciesinfo.gov/animals/rifa.shtml Solenopsis invicta) invasive RED FIRE ANTS! http://www.invasivespeciesinfo.gov/animals/rifa.shtml Red Imported Fire Ant http://www.invasivespeciesinfo.gov/animals/rifa.shtml http://www.invasivespeciesinfo.gov/animals/rifa.shtml Imported Fire Ant http://www.invasivespeciesinfo.gov/animals/rifa.shtml Red Imported Fire Ant species profile (USDA)