FIGURE 28. Xeropsalta festiva 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 28. Xeropsalta festiva n. sp., field recording (L.W.Popple), Hilston, N.S.W. Fig. 28A, overview waveform plot of multiple echemes with the intervening, isolated, high amplitude double pulses. (B), time expanded view of an echeme showing the abrupt initial start, followed by a short gentle decrease, and then progressively increasing amplitude extending to the abrupt termination. The strongly developed pulse doublets emitted before and after the echeme are clearly shown. (C), detailed time expanded plot of selected segment of echeme (see (B) for location) showing three macrosyllables, each, with 6 pulses. Macrosyllable RR range between 132–139 Hz. (D), detailed time expanded plot of a double pulse showing the pulse structures. Each of the two dominant pulses are themselves doublets with a separation of 1 ms, and each is evidently followed by a much weaker secondary pulses (labeled as 'S' in plot D, timbal relaxation 'OUT' pulses), emitted between 2.1–2.4 ms after the primary pulses. The two sets of doublet pulses are interpreted as the results of small, but asymmetries of the firing of two timbals. Filtered 2 kHz.