FIGURE 13. Heremusina udeoecetes n in Two new genera and five new species of Mugadina - like small grass cicadas (Hemiptera: Cicadidae: Cicadettini) from Central and Eastern Australia: comparative morphology, songs, behaviour and distributions

FIGURE 13. Heremusina udeoecetes n. sp. Time expanded details of selected pulses shown in Fig. 12, shown as waveform and companion envelope plots. In 13A, B, the initial single pulse is markedly of longer duration compared to each of the following double pulses, suggesting that it results from a partial overlapping of asynchronous pulses from the two timbals; the double clicks are therefore interpreted as temporally more clearly separated pulses emitted by the two timbals. Figs 13C, D are strongly developed doublet pulses, emitted asynchronously by the two timbals. The following smaller peaks which are almost coalesced with the main peak are believed to represent the emission from timbal ribs 2–5. The peaks labeled 'S' are interpreted to be secondary ('OUT') clicks of the timbals, not seen following first peak most likely as they overlap the emission of the second primary peak of each doublet. Fig. 13E, F, time expanded single pulses emitted at start of echeme, these showing merged weaker peaks (probably emissions of ribs 2–5). Secondary peaks, marked 'S', occurring 1.7 ms after the primary peaks, are inferred to represent be 'OUT' clicks of the timbals. Filtered to 3.5 kHz.