Figure 2 in Observations of unusual acoustic behaviour in two Australian leafhoppers (Hemiptera; Cicadellidae)

Figure 2. Austrolopa brunensis. (A) An acoustic exchange between two females. The two individuals can be distinguished by different frequencies of the signal (the lower and higher frequency signals are indicated by the arrows). Individual calls also overlap in part. The cartoon illustrates the typically close proximity of the females during these exchanges. (B) The male call which is usually divided into three distinct phrases of regular pulses. In each figure part, spectrograms are shown above and oscillograms below.