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sand field cricket

Gryllus firmus Scudder 1902

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map long-winged female short-winged female long-winged male
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male female forewing file characters
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G. firmus male G. pennsylvanicus male    
22 s of calling song, male from Alachua County, Fla., 24.8°C. Dominant frequency 3.6 kHz (WTL481-24). Click on sound bar to hear entire recording.
This sound spectrogram is a 2 s excerpt of the 22 s audio file accessible above. The excerpt begins at 20 s. Click on sound bar to hear graphed song.
Range: In most of its range, Gryllus firmus is the only chirping, field-inhabiting Gryllus. In South Florida it overlaps with Gryllus assimilis. To the north its range overlaps with G. veletis and G. pennsylvanicus and it sometimes hybridizes with the latter species (Harrison and Bogdanowicz 1997).
More information:
subfamily Gryllinae, genus Gryllus
References: See genus page.
Nomenclature: OSF (Orthoptera Species File Online)
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