Eurycorypha combretoides, Hemp, 2013

Heller, Klaus-Gerhard & Hemp, Claudia, 2020, Hyperdiverse songs, duetting, and the roles of intra- and intersexual selection in the acoustic communication of the genus Eurycorypha (Orthoptera: Tettigonioidea, Phaneropterinae), Organisms Diversity & Evolution (New York, N. Y.) 20 (4), pp. 597-617 : 601

Eurycorypha combretoides ( Figs. 3 and 4a )

The song of E. combretoides was described by Hemp et al. (2013) for an animal from Mt. Kilimanjaro. The songs of the now additionally recorded males are very similar. They mostly contain two different types of echemes: a louder and a softer one (softer one not heard in the animal from Bukoba). In the louder echeme, a long syllable is followed first by a distinctly shorter one and later by an isolated impulse. The softer echeme is similar in structure, but after the pair, a third syllable can be heard, while an isolated impulse is often missing. Louder and softer echemes are produced in pure or mixed order at intervals of a few to many seconds. Often two loud echemes are produced at relatively short intervals of 1 to 2 s. Series of typically three to five echemes are separated by intervals of several minutes. The first syllable periods in the louder and in the softer echemes are around 70 ms, the second in the louder (to the impulse) around 60 ms, in the softer ones around 140 ms (measured from peak to peak) .

Figures

Fig. 3 Power spectra of male calling song of Eurycorypha species. In species with restricted frequency range, short black lines mark its end. Blue lines indicate power spectra of female responses

Fig. 4 a, b Oscillograms of male calling songs, overview (10 s sections)