Figure 2 from: Żurawlew P, Desutter-Grandcolas L, Szymański P, Herman DB (2020) New records of exotic crickets in Europe: Homoeogryllus species (Orthoptera: Gryllidea: Phalangopsidae). Journal of Orthoptera Research 29(2): 121-125. https://doi.org/10.3897/jor.29.50387

Figure 2 Stridulation of Homoeogryllus cf. reticulatus (Fabricius, 1781) male from Gent (Belgium): a. spectrogram of two recorded stridulation series; b. spectrogram of one stridulation series in higher resolution of time domain; c. spectrogram of the beginning of stridulation series with three units (syllables) shown. The oscillograms are shown below and the relative amplitude scales (in dB) on the right of the spectrograms. Abbreviations: dB, decibel; s, second; kHz, kilohertz.