FIGURE 18 in New species of Drymopsalta Heath Cicadas (Cicadidae: Cicadettinae: Cicadettini) from Queensland and Northern Territory, Australia, with overview of genus

FIGURE 18. Drymopsalta daemeli (Distant). Waveform plots of; A, B, normal calling song, and C, D, buzzing echeme. A, B (time expansion) illustrate the chirps with the characteristic two intervening single ticks. The definition of the ratio parameters R1 to R4 are shown, relating the timing of the single ticks relative to the adjacent chirps. C, D (time expansion) illustrate the structures of the buzzing echemes which in fact comprise sets of closely spaced short echemes, each comprising coalesced ticks. Field recordings filtered to 16 kHz.