The Messor capitatus ant colony consists of approximately 5,000 ants and has a monogynous colony type. The ants have a medium development rate and come in various sizes, with the queen measuring 13-16mm, workers measuring 5-10mm, and majors measuring 12-16mm. They are black in color and feed on food insects, fruits, vegetables, and seeds. The ants thrive in a humidity level of 30-50% in the arena and 40-60% in the nest.