text: Antie’s stalks would also have receptors for the hydrocarbons themselves, which research shows indicate to the ants whether another ant is their nestmate (Arnold, et al, 1996, as cited in Gordon & Mehdiabadi, 1999), receptors to detect food, and receptors for three types of pheromones: those released by successful foragers returning with food, those released by successful patrollers returning to the nest, and those marking piles of trash as midden.