Oecanthus sp. 1

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 : 1572

Oecanthus sp. 1

Calling song

A mix-trill with phrases emitted uninterruptedly at regular intervals. Each phrase lasts for 0.205 ± 0.018 (0.162 –0.244) seconds, containing 11 ± 1.322 (8–12) syllables each. Each phrase is separated by intervals of about 0.165 ± 0.012 (0.152 –0.192) seconds and a peak frequency of 2.75 ± 0 (2.75–2.75) kHz.

Collection site

Parque Estadual de Itapuã. Males were recorded and collected at edge locations within shrubby vegetation up to 1 metre in height. The males commence their signalling at 8 pm and extend it well into the early hours of the morning. The collected males were obtained on February 20, 2020 and 2023, at 8 pm, with a temperature of 22°C ( Figures 13B and 16B ).

Remarks

The specimens were identified as a new species which the description will be published later.

Oecanthus sp. 2

Calling song

A mix-trill with short phrases emitted continuously. Each phrase lasts for 0.11 ± 0.03 (0.079 –0.126) seconds, containing 11.2 ± 2.28 (9–15) syllables. Each phrase is separated by intervals of approximately 0.095 ± 0.031 (0.044 –0.124) seconds, with a peak frequency of 3.09 ± 0.018 (3.069 –3.116) kHz.

Collection site

Parque Natural Municipal Saint-Hilaire. The males emit signals between 8 pm and 11 pm. Recordings and collection were carried out in areas with low canopy, reaching up to 2 metres, on April 11th, 2022, at 8 PM, with a temperature of 19°C . Despite the collection in the lower stratum, the species does not typically inhabit low areas but rather prefers significantly higher locations ( Figures 13C and 16C ).

Remarks

The specimens were identified as a new species which the description will be published later.

Figures

Figure 13. Songs of Oecanthidae crickets. (A) Calling song of Oecanthus lineolatus Saussure, 1897. (B) Calling song of Oecanthus sp. 1. (C) Calling song of Oecanthus sp. 2.

Figure 16. Visual guide of Oecanthidae, Phalangopsidae and Trigonidiidae crickets of Pampa with songs recorded. (A) Oecanthus lineolatus Saussure, 1897. (B) Oecanthus sp. 1. (C) Oecanthus sp. 2. (D) Endecous onthophagus (Berg, 1891). (E) Lerneca inalata bericopene Lima, Martins and Lhano, 2016. (F) Anaxipha sp. 1. (G) Anaxipha sp. 3. (H) Cranistus colliurides Stål, 1861. (I) Phylloscyrtus amoenus Burmeister, 1880. Bar: 1cm. Photos A-D, F-H by Riuler Corrêa Acosta; Photo E by Lucas Augusto Kaminski; Photo I by Edison Zefa.