Carpenter ants (Camponotus spp.) have one node on their pedicel, a ring of hairs around the tip of their abdomen, and an evenly rounded thorax when viewed from the side. The workers are polymorphic, ranging from 1/4 to 3/8 in., but they tend to be large ants. Carpenter ants in Albuquerque are usually two-toned, light and dark red, while those in the canyon and forest areas tend to be black. Workers normally forage at night and colonies may go unnoticed for a long time. Carpenter ants like to nest in wood, particularly stumps, landscape timbers or railroad ties, and moist structural elements in homes, around window and door frames. These ants are sometimes mistaken for termites, but Carpenter ants do not eat wood. While large, old colonies can do structural damage, in New Mexico such damage is usually minimal.