Large ants, (3/8-inch) often confused with Carpenter ants. Wide variation in color: black, brown, tan, reddish, or red and black in color. Thorax is bumpy in appearance. Key distinguishing feature: The presence of 3 ocelli on head (ocelli are simple eyes on the front of the head between the ant's compound eyes.
Field ants are common around structures, but are not often found inside. These ants are soil nesters and may construct mounds in open fields. In lawns, these nests have a low profile. rarely reaching above the top of the grass. They also nest under objects like rocks, landscape timbers and firewood piles. Displaced soil is often evident. Items such as stones, logs, and bricks should be overturned and inspected for colonies underneath.