Songs APR 30 – Black-horned tree cricket (Oecanthus black-horned tree cricket (Oecanthus nigricornis) (orthsoc.org) https://orthsoc.org/sina/589a.htm Black-horned and Forbes’ cannot be ID’d by appearance, but their songs are different in rate and frequency. Here they are, side by side, indoors. The last 8 seconds is where you can best tell the difference between the two species. Above is Black-horned – 44 pulses per second at 3.75 kHz. Below is Forbes’ – 51 pulses per second at 4.1 kHz. Technically, the rates should be a bit different. At 75.9F and Forbes’ should be a tad higher (58-61)…could their being next to each other causing him to try to adjust his song just as two of the same species would do to achieve synchrony? I don’t know. s576lw63.pdf (orthsoc.org) Tomorrow: World Species APR 29 – Forbes’ tree cricket (Oecanthus forbesi) Forbes’s tree cricket (Oecanthus forbesi) (orthsoc.org) https://orthsoc.org/sina/594a.htm Forbes’ tree cricket has a trilling song. Here is a male with the air temperature 64 F. Here is a male with the air temperature 83 F. APR 28 – Pine & Tamarack tree cricket (Oecanthus pini and laricis) pine tree cricket (Oecanthus pini) (orthsoc.org) https://orthsoc.org/sina/587a.htm tamarack tree cricket (Oecanthus laricis) (orthsoc.org) https://orthsoc.org/sina/591a.htm I have been dreading this one 😉 Pine and Tamarack tree cricket have a trilling song. Let me just go ahead and post a nice photo and video of Oecanthus pini to distract you 😉 I have many Pine tree cricket recordings at different temperatures, and a few each of Tamarack tree cricket and a mystery species in Colorado. The issue is that I believe two out of the three males that I have possessed in the past were actually dark Pine tree crickets that happened to be found on Tamarack trees in southern Michigan. Here is a waveform from two recordings from … Continue reading APRIL