Fig. 5. Pitching moment of inertia (I_yy) measurements. (A) Stacked bar graphs showing the masses of eight transverse sections of the body corresponding to the sections illustrated in (B) below. The different colours distinguish data from the three locusts according to the scheme `R' (red), `G' (green), `B' (blue). The mass of each section is expressed as a proportion of the total frozen body mass and the y-axis is scaled such that the total area of the bar graphs is 100%. (B) Line drawing showing the position of the eight sections. (C) Block model of a locust. The area of each of the blocks corresponds to the projected area of each section in B and the density of the shading corresponds to the mass per unit area of each section. The white crosses mark the positions of the wing roots. The red cross marks the position of the centre of mass. (D) Bar graph illustrating the percentage contribution of each body section to the total pitching moment of inertia. Note that this bar graph mirrors the bar graph in A above, indicating that percentage contributions to the total pitching moment of inertia are inversely correlated with percentage contributions to the total body mass.

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