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Figure 5


Fig. 5. Four successive frames from high-speed video (scale bar 3 mm) showing tegminal positions within the time course of the (closing) AM pulse pattern in Eubliastes aethiops. Latero-posterior view (right side of the insect). The position of the scraper over the file is marked by a red arrow; coloured broken lines show where in the oscillogram time course the frame was obtained. (A) CWV values are associated with each frame: the wings lose velocity before the production of a pulse. Scale bar, 10 ms. (B) As for Myopophyllum sp. n., there was a conspicuous displacement of the wings during the production of a pulse and the CWV increases to ~166.1 mm s-1. (C) For the final pulse of the train, the wings close again more slowly during the silent interpulse interval and CWV drops to ~134.3 mm s-1, and increases again during the pulse to 169.8 mm s-1 (D). The movement of the scraper ends close to the basal part of the file.





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