Fig. 4From: Structural organization and cohesiveness of foraging groups in Camponotus sericeus (Fabricius) (Hymenoptera: Formicidae): locally regulated or self-organized?Average ant unit distance (d) between the nearest ants in the undisturbed group (Control; open bar), when the ant was removed (Minus ant), and 2 min after its re-introduction (Plus ant). Solid black bars: ant removed from mid group; Shaded bars: Leader ant removed. The vertical bars are the SD valuesBack to article page