Enthephippion olivaceum ( Brunner von Wattenwyl, 1891 )

Fianco, Marcos, Szinwelski, Neucir & Faria, Luiz R. R., 2022, Katydids (Orthoptera: Tettigoniidae) from the Iguaçu National Park, Brazil, Zootaxa 5136 (1), pp. 1-72 : 55

Enthephippion olivaceum ( Brunner von Wattenwyl, 1891)

Fig. 25J, K ; 28F

Distribution: Argentina: Misiones; Brazil; Brazil: Minas Gerais, Paraná, Rio Grande do Sul; Paraguay: Paraguarí.

New record for the Paraná State.

Comments: The position of the genus within the Phaneropterinae is still unclear ( Cigliano et al. 2022). The species appears not to be broadly distributed within South American forests, considering its northernmost record (Minas Gerais State, Brazil).

Bioacoustics ( Fig. 27 ): Males produce sequences of echemes, each one composed by four to seven echemes. Each echeme is composed by 25 to 35 syllables that are produced with increasing intensity.

Dominant frequency: 16 ± 2 kHz.

Bandwidth: 7 ± 1.7 kHz.

Duration: Syllable: 4 ± 0.8 ms; Echeme: 40 ± 6 ms.

Mute interval: Syllable: 12 ± 1 ms; Echeme: 1.9 ± 0.14 s.

Figures

FIGURE 25. Species of Steirodontini (Phaneropterinae) from the ParNa Iguaçu. A: Cnemidophyllum citrifolium, male; B and C: Steirodon dentiferoides, male and female, respectively; D and E: S. dentiferum, male and female, respectively; F and G: Stilpnochlora marginoides, male and female, respectively; H and I: S. nanna, male and female, respectively.

FIGURE 27. Enthephippion olivaceum (Phaneropterinae) from the ParNa Iguaçu. A and B: male and female, respectively; G: sonogram of a sequence of echemes; H: sonogram of one echeme; I: spectrogram of one syllable.

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.