Fig. 5. Numbers of tactile hairs on the front and hind legs of adult locusts differed between phases. (A) Numbers of tactile hairs on the front and hind legs. Solitarious locusts had fewer sensilla on the front leg and on the hind tarsus but had more sensilla on the hind femur than did gregarious locusts. (B) The distribution of tactile hairs on the hind femur was similar to that of final-instar nymphs (see Fig. 4B). (C) Maps showing the positions of the hairs from nine individuals overlaid onto averaged femur outlines; most hairs were confined to the longitudinal ridges on the femur. Significance (t-test) is indicated by asterisks: ^*, P<0.05; ^**, P<0.01; ^***, P<0.001; N=9 locusts per group throughout.