Tandem run recruitment by Temnothorax ants

During nest site selection, Temnothorax scouts use tandem runs to recruit one another to promising candidate sites. The successful scout emits a pheromone signal that attracts a single follower. The follower shows her continued presence by antennal contact with the abdomen of the leader, who frequenty stops to allow her follower to catch up. Tandem runs are also used to by foragers to recruit nestmates to rich sugary food.