Eurycorypha pseudomeruensis, Hemp, 2017

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 : 609

Eurycorypha pseudomeruensis ( Figs. 3 , 4b , and 5 )

As in E. meruensis , the calling song consisted of long (30– 60 s) series of short elements with intervals of around 1–2 s in between ( Fig. 4b ). Mostly a series contained groups containing two different echeme types, more rarely also simple echemes. In the echeme group, first a very short crescendoing group of two (1–3) relatively long syllables (duration of last and longest syllable, 24.8 ± 3.9 ms; n = 21 (7 in 3 males each); T = 26–8 °C) was heard ( Fig. 5 ), after a gap of 55 ± 13 ms followed by an echeme containing three to six short syllables (duration, 6.8 ± 3.0 ms; SRR, 45 Hz) .

In one test, a female was placed in a cage together with two males. In the recording, sound impulses could be detected which may represent female responses at 294 ± 33 ms (n = 6) after the beginning of simple echemes in the male song (containing only the first part of an echeme group).

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)

Fig. 5 Oscillograms of male calling songs, details (1.5 s sections)