Messor structor is a polygynous ant species with a medium development rate. The colony size can reach up to 5,000 workers. The ants are dark reddish brown in color and the queen measures 10-12mm, while workers range from 4-7mm and majors range from 7-10mm. Their diet consists of food insects and seeds. They require a humidity level of 30-50% in the arena and 70-90% in the nest. The temperature should be maintained at an appropriate level.