collared ground cricket
Neonemobius nr. mormonius

range extension

22 s of calling song [1.89MB]; male from Coffee Co., Fla.; 24.7C. (WTL535-23a)
6 s of calling song [267KB]; same as above but truncated and downsampled.

Sound spectrogram of 12 s of calling at 24.7°C (from WTL535-23a). Dominant frequency 8.6 kHz increasing to 8.9 kHz.
Click on first half of spectrogram to hear graphed song.
Click on last 3 seconds to expand last 0.5 s of spectrographic image.

This species resembles the western species Neonemobius mormonius in morphology and in calling song and may be conspecific with it. In 1913, Hebard reported crickets of this sort (which he called "Nemobius cubensis mormonius") only as far east as Biloxi, Mississippi. In 1958, when TJW started his studies of Florida crickets, "nr. mormonius" was one of the most abundant ground crickets in West Florida. In 1961, he first found "nr. mormonius" farther east, in Gainesville, Florida. There it soon became the most abundant ground cricket inhabiting well-drained grassy roadsides and pastures (Walker 1974).

Song data: Excel worksheet and chart (from spectrographic analyses).

Nomenclature:  OSF (Orthoptera Species File Online)