Big-Headed Ants get their name from their noticeably large heads relative to the size of their bodies. There are many species in the United States, reaching all the way out to Hawaii. Some species act of hosts for tapeworms, which infect domestic fowl such as turkeys and chickens.
Most Big-Headed Ant colonies range from 200 to 300 ants, but some colonies can reach thousands of ants and several queens. Big-Headed Ants occasionally enter buildings and homes. They prefer to build nests in protected soil areas, under stones, mulch, leaf litter, patio blocks, firewood, etc. Occasionally, they will nest in open areas, creating small mounds, or in crawl spaces where termites have damaged the wood.