Odontomachus aciculatus is a polygynous ant species with a colony size of up to 500 workers. They have a medium development rate and are about 10-13mm in size. The ants are black-black-brown in color with brown legs. They feed on food insects like cockroaches and crickets, as well as sweet fruit. They require humidity levels of 60-70% in the arena and 60-80% in the nest. The optimal temperature for their habitat is not specified.