Grammadera (Deragramma) steinbachi Bruner, 1915

Fig. 17C, D

Distribution: Argentina: Misiones; Bolivia: Santa Cruz; Brazil: Paraná.

New record for the Brazil and for the Paraná State.

Comments: The species was recently recorded in southern of Santa Cruz Province, Bolivia, closer to the Brazilian border (Gorochov 2016).

Bioacoustics (Fig. 18 G–I): The stridulation is performed during the day and also at the beginning of the night. Males produce echemes of short duration, each one formed by two syllables. The syllables present a common crescendo until reaching the peak that is followed by a decrescendo.

Dominant frequency: 27 ± 0.5 kHz.

Bandwidth: 5.3 ± 0.5 kHz.

Duration: Syllable: 16 ± 2 ms; Echeme: 47 ± 4 ms.

Mute interval: Syllable: 15 ± 2 ms; Echeme: 0.7 ± 0.2 s.