Solenopsis invicta, commonly known as the red imported fire ant, is a species of ant native to South America. It is recognized for its aggressive behavior and painful sting. These ants build large mounds in open areas and are often found in warm climates, particularly in the southern United States. Fire ants are omnivorous, feeding on a variety of substances, including proteins, sugars, and fats. They play a role in their ecosystem by aerating the soil and controlling pest populations. However, their invasive nature can lead to negative impacts on local wildlife and agriculture.