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Fig. 5. Frequency discrimination by Cicada barbara males. Each male was
stimulated with six sinusoidal tones at 80 dB SPL and the time taken by males
to respond was measured. The conspecific song at the same sound intensity was
presented for comparison. The 6 and 9 kHz tones were the most attractive.
Singing behaviour was frequently not induced with 3 and 15 kHz tones within
180 s. Values are means ± 95 % confidence intervals
(N=14).
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