Viadana (Viadana) piracicabae Piza, 1969

Fianco, Marcos, Szinwelski, Neucir & Faria, Luiz R. R., 2022, Katydids (Orthoptera: Tettigoniidae) from the Iguaçu National Park, Brazil, Zootaxa 5136 (1), pp. 1-72 : 40

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.

Figures

FIGURE 17. Species of Phaneropterini (Phaneropterinae) from the ParNa Iguaçu. A and B: Grammadera (Deragramma) albida, male and female; C and D: G. (D.) steinbachi, male and female; E and F: G. (Grammadera) clara, male and female; G and H: Mendesius albosignatus, male and female; I: Tomeophera australis, male; J: T. modesta, male; K and L: Viadana piracicabae, male and female.

FIGURE 21. Calling songs of Phaneropterini and Scaphurae (Phaneropterinae) from the ParNa Iguaçu. A–C: Viadana (Viadana) piracicabae; D–F: Topana cincticornis; G–I: Scaphura elegans. A, D and G: sonogram of one echeme sequence; B, E and H: sonogram of two syllables; C, F and I: respective spectrograms.

FIGURE 22. Live specimens of Phaneropterini, Phyllopterini and Scaphurae (Phaneropterinae) from the ParNa Iguaçu. A: Anaulacomera argentina; B: A. trispinata; C: A. arlindoi; D: A. angelinae; E: Viadana piracicabae; F: Hyperphrona striolata; G: Phylloptera fosteri; H: Scaphura elegans; I: Scaphura sp. 1; A–G and I: photos by Marcos Fianco; H: photo by Pedro. G.B. Souza-Dias.