The answer to 'types of fire ant' is that there are several different species of fire ants found in the United States, with the most common being the red imported fire ant. Fire ants are small, reddish-brown ants that build mound-shaped nests in the ground. They are known for their aggressive behavior and painful sting, which can cause reactions in some people.
Other common types of fire ants include the black imported fire ant, the southern fire ant, and the tropical fire ant. These ants can vary in size, color, and nesting habits, but they all share the characteristic of being highly aggressive and territorial.