Pompanonia sp.

Acosta, Riuler C., Timm, Vítor F., Zefa, Edison, da Costa, Maria K. M., Ruschel, Tatiana P., Lopes, Dimitrius A. R. & Kaminski, Lucas A., 2025, Pampa singers: an acoustic and visual guide to singing insects (Orthoptera and Hemiptera), Journal of Natural History 59 (21 - 24), pp. 1541-1589 : 1550-1551

Pompanonia sp.

Flying song

Not observed.

Calling song

Composed of a continuous emission signal with a series of echemes, each having 2 syllables. Each syllable lasts about 0.01 ± 0.001 (0.011 –0.013), emitting a total of

106.8 ± 1.7 (105–109) echemes per second. The calling song has a peak frequency of 10.27 ± 0.08 (10.1–10.31) kHz.

Stress call

There are a total of 10.33 ± 3.5 (7–19) notes per syllable. The frequency is distributed in broad-range frequency, with F1 at 8.53 ± 0.12 (8.3–8.6) and F2 at 9.45 ± 0.54 (9–10.2) kHz.

Collection site

Parque Estadual de Itapuã. The cicada was recorded and collected in areas of scrub vegetation. Singing was observed in shrubs between 0.3 and 0.5 metres above the ground. Its sound was recorded at 7 pm on 9 January 2020, with a temperature of 24°C ( Figures 3 G-H and 5G).

Remarks

The specimens collected have the same external morphology and male genitalia according to the description and spectrogram presented for Pompanonia buziensis Boulard, 1982 . However, the frequencies in the spectrogram included in the original description and in later work are different from the values we recorded: 5 kHz ( Boulard 1982), 8 kHz ( Boulard 1999), and 10 kHz in this study.

Although both specimens sing during the crepuscular period and in similar environments, we did not have access to the type material for a deeper morphological study and comparison. Consequently, we chose to keep the specimens in this study identified as Pompanonia sp. waiting for future studies to confirm the identification of these specimens.

Figures

Figure 3. Songs of Parnisini and Fidicinini cicadas. (A) Calling song of Parnisa sp. (B) Stress call of Parnisa sp. (C) Acanthoventris charrua Ruschel, 2023. (D) Guyalna bonaerensis (Berg, 1879). (E) Calling song of Guyalna viridifemur (Walker, 1850). (F) Stress call of Guyalna viridifemur (Walker, 1850). (G) Calling song of Pompanonia sp. (H) Stress call of Pompanonia sp. (I) Calling song of Proarna montevidensis.BERG, 1882. (J) Calling song of Proarna uruguayensis Berg, 1882