(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.


Figure 6


Fig. 6. File morphology and sound quality of two species of katydid using sustained pure tones. (A,D) Intertooth intervals plotted in their natural sequence on the file. (B,E) Zero-Crossing analysis of the pulse shown in C and F; red arrows indicate increments in frequency associated with scraper-file disengagement. (C,F) Sound pulse waveform.