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147 ms

FIGURE 8.4 Two short call types. (a) A single syllable with a rising amplitude employed by the duetting phaneropterine bushcricket Poecilimon affinis. (Redrawn after Heller, K.-G., Evolution of song pattern in east Mediterranean Phaneropterinae: Constraints by the communication system, In The Tettigoniidae: Biology, Systematics and Evolution, Bailey, W. J. and Rentz, D. C. F., Eds., Crawford House Press, Bathurst and Springer, Berlin, pp. 130-151, 1990.) (b) A diplosyllable of the tropical pseudophylline Myopophyllum speciosum drawn to the same scale as A and below the detail of the 147 msec syllable. (Redrawn after Morris, G. K., Mason, A. C., and Wall, P., J. Zool. London, 233, 129-163, 1994.)

147 ms

FIGURE 8.4 Two short call types. (a) A single syllable with a rising amplitude employed by the duetting phaneropterine bushcricket Poecilimon affinis. (Redrawn after Heller, K.-G., Evolution of song pattern in east Mediterranean Phaneropterinae: Constraints by the communication system, In The Tettigoniidae: Biology, Systematics and Evolution, Bailey, W. J. and Rentz, D. C. F., Eds., Crawford House Press, Bathurst and Springer, Berlin, pp. 130-151, 1990.) (b) A diplosyllable of the tropical pseudophylline Myopophyllum speciosum drawn to the same scale as A and below the detail of the 147 msec syllable. (Redrawn after Morris, G. K., Mason, A. C., and Wall, P., J. Zool. London, 233, 129-163, 1994.)

frequency (>75 kHz). These authors report that the interval between calls was over 8 sec and, moreover, the song period was highly variable giving a duty cycle of 1.7%, which is extremely low for any calling insect.

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