The thorax of the worker ant consists of three serially homologous segments, the prothorax, the mesothorax, and the metathorax, to which the legs are attached. The thorax is mainly a 'power house' for the ant, with the major components internal. The thorax contains three spiracles, two of which are shielded.

Every leg is composed of, in order starting at the thorax, a coxa, a trochanter, a femur, a tibia, five tarsal joints, and a claw. The top tarsal segment, called the metatarsal has a spur protruding from it, which contains a comb used for cleaning the antennae. The ant simply draws her antennae through this elegant structure to remove any particles that might have collected on the antennae. The claws of the ants are situated over the terminus of the last segment, which itself ends with a ciliated invagination which is capable of creating a vacuum with which the ant can adhere itself to slick surfaces.