Fig. 9. Traces of tripod arms in the body-fixed reference system in Melolontha hippocastani. (A) Top view; (B) rear view. Body silhouettes at the top of each panel illustrate positions of the left tripod arms, clearly seen at the half-opened stage. Designations as in Fig. 8. Zero pitch, 4 episodes, 90 and 94 frames for two tripods. Note the elevation of elytra in the closed position (arms LP and RP in B) and the capture of wingbeats in the open position (arms LP, LV in A).