common meadow katydid
Orchelimum vulgare Harris 1841

male cercus
forewing movement 

20 s of calling song [1.69MB]; male from Dyer Co., Tenn.; 25.0°C. (WTL258-44)
9 s of calling song [831KB]; same as above but truncated.
26 s of calling song [2.22MB]; 8 males from Washington Co., Ohio, synchronizing their buzzes; 26.0°C. (WTL258-48b)

Waveform of 3 s of calling at 25.0°C (from WTL258-44). Peak frequency ca. 10 kHz.
Click on first half of waveform to hear graphed song.
Click on second half of waveform to expand 0.4 s at end of buzz.

More information:  subfamily Conocephalinae, genus Orchelimum

References:  Metcalf & Colby 1930, Vickery 1974.

Nomenclature:  OSF (Orthoptera Species File Online)