Vellea cruenta (Burmeister, 1838)

Fianco, Marcos, Szinwelski, Neucir & Faria, Luiz R. R., 2022, Katydids (Orthoptera: Tettigoniidae) from the Iguaçu National Park, Brazil, Zootaxa 5136 (1), pp. 1-72 : 50

Vellea cruenta (Burmeister, 1838)

Fig. 23I, J ; 28C

Distribution: Argentina: Misiones; Brazil: Pará, Paraná, Rio de Janeiro, Rio Grande do Sul; Colombia: Valle del Cauca; Guyana: Demerara, Kamoa River; Suriname.

New record for the Paraná State.

Comments: This species presents a broad geographic distribution. The individuals collected at the ParNa Iguaçu present a remarkable variation regarding body size and coloration, but, however, the shape of both cerci and subgenital plate, besides the wing venation, are rather like such structures of the holotype.

Bioacoustics ( Fig. 24H–J ): Males stridulate during both the night and day, producing short sequences of syllables. These sequences present six to nine syllables, each one with different amplitude from another. Each syllable is composed by four to six pulses, that increases in intensity until the last third, when the intensity starts decreasing.

Dominant frequency: 10.2 ± 1.4 kHz.

Bandwidth: 6.5 ± 1.7 kHz.

Duration: Pulse: 1.6 ± 0.3 ms; Syllable: 28 ± 5.6 ms;

Mute interval: Pulse: 6.1 ± 0.3 ms; Syllable: 89 ± 3.7 ms;

Figures

FIGURE 23. Species of Scudderiini (Tettigoniidae: Phaneropterinae) from the ParNa Iguaçu. A and B: Ceraia cornutoides, male and female, respectively; C and D: C. liebermani, male and female, respectively; E: C. piracicabensis, male; F: Ceraia sp. 1, female; G: Homotoicha olivacea, female; Theudoria melanocnemis, male; Vellea cruenta, male and female, respectively.

FIGURE 24. Calling song of the species of Scudderiini (Phaneropterinae) from the ParNa Iguaçu. A–B: Ceraia liebermanni; C–G: Theudoria melanocnemis; H–I: Vellea cruenta. A and B: sonogram and spectrogram of one syllable; C: sequence of echemes; D, E and F: the different echemes highlighted in C; G: spectrogram of the echeme highlighted in F; H: sonogram of one sequence of echemes; I: sonogram of one echeme; J: spectrogram of the respective echeme.

FIGURE 28. Live specimens of Scudderiini, Steirodontini and Entephippion olivaceum (Phaneropterinae) from the ParNa Iguaçu. A: Ceraia cornutoides; B: Theudoria melanocnemis; C: Vellea cruenta; D: Steirodon dentiferum; E: Stilpnochlora marginoides; F: E. olivaceum; A: photo by Leanna C. Macarini; B–F: photos by Marcos Fianco.