Camponotus americanus, commonly known as the American carpenter ant, is a large species of ant found in North America. They are known for their black or reddish-black coloration and their size, with workers measuring around 6 to 13 mm in length. These ants are typically found nesting in decaying wood, such as tree stumps or logs, and are known for their ability to excavate galleries and tunnels. They play an important role in forest ecosystems by aiding in the decomposition of dead wood.