Fig. 11. Depression movements of a hind leg in dead Cercopis. (A) Ventral view in which the left hind was forcibly moved into the cocked position so that the coxo-trochanteral joint was fully levated and the femoral protrusion engaged with the coxal protrusion. The leg then spontaneously depressed with the whole movement being completed in 2 ms. Note the rotation of the trochanter about the femur (yellow arrow) and the movement of the femur (blue line and arrow). (B) Two stage depression of the left hind leg in a second Cercopis. Ventral view. The first image (-17 ms) shows the leg in the fully levated position. The tibia was pushed posteriorly and the coxo-trochanteral joint depressed partially (image -2 ms) while the femur stayed in the same position. At 0 ms the femur moved and was accompanied by a further depression of the coxo-trochanteral joint. In the final image (+1 ms) the continuing movement of the femur exposed the coxal protrusion. Images were captured at 500 s^-1 in A and at 1000 s^-1 in B.