Bioacoustics of Typophyllum inflatum

Comments: Even if this species was previously recorded for the Paraná State ( Cigliano et al. 2022 ), the record for the Iguaçu National Park is new. We collected individuals which varied considerably regarding coloration patterns: greenish, whitish, greenish-whitish, brownish-whitish, greyish were recorded, even if dark brown specimens were most frequent . Bioacoustics ( Fig. 33E–G ): The stridulation only occurs at night, when males produce very conspicuous short echemes that are composed by sequences of two syllables. Such syllables are distinctly emitted with a gradual increase and a posterior decrease of intensity. The frequency of the sound varies along the duration of the syllables, and an evident harmonic appears at half of the dominant frequency. Dominant frequency : 21.3 ± 0.4 kHz. Bandwidth : 3.5 ± 1.5 kHz. Duration : Syllable: 0.04 ± 0.004 s ; Echeme: 0.18 ± 0.004 s . Mute interval : Syllable: 0.1 ± 0.005 s ; Echeme: 0.2 ± 0.01 s .