Fig. 6. A jump by Saldula in which the wings were being elevated at take-off. (A) The wings were first opened 13 ms before take-off but the hind legs did not move until 4 ms before take-off, at which time the wings were being elevated. (B) Graph to show the position of the tip of the right front wing at take-off in the 25 jumps where the wings were moved. The filled circles indicate that the wing was being depressed and the open circles that it was being elevated at take-off. The graph is superimposed upon a drawing of Saldula taken from a jump in which the wings were moved.