Katydids (Orthoptera: Tettigoniidae) from the Iguaçu National Park, Brazil Author Fianco, Marcos 0000-0001-6662-6311 Author Szinwelski, Neucir 0000-0003-4049-3121 Author Faria, Luiz R. R. 0000-0002-7214-106X fianco.marcos@gmail.com text Zootaxa 2022 2022-05-13 5136 1 1 72 journal article 94100 10.11646/zootaxa.5136.1.1 538d9a36-c9c2-4145-a9b9-19f9150115f5 1175-5326 6550041 2E17DFE1-F5E8-479C-90BF-483546932C33 Viadana (Viadana) piracicabae Piza, 1969 Fig. 17K, L ; 22E Distribution: Brazil : Paraná , São Paulo ; Paraguay : Alto Paraná . New record for the Paraná State . Comments: This is the second record of the species after its original description. Gorochov (2015) recently presented a record of the species for Puerto Bertoni, Alto Paraná , Paraguay , a place nearby the Iguaçu National Park. Bioacoustics ( Fig. 21A–C ): The stridulation is performed by males during the day and at the beginning of the night. The echemes are composed by seven to 35 syllables. Each syllable is emitted with a quickly increase and after that a long decrescendo of intensity. Dominant frequency : 21.8 ± 0.7 kHz. Bandwidth : 3 ± 0.1 kHz. Duration : Syllable: 0.01 ± 0.002 s . Mute interval : Syllable: 2 ± 0.5 s .