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long-chirp field cricket

Gryllus multipulsator Weissman 2009

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map West Coast & Baja CA male male
17 s of calling song; holotype from Alpine, San Diego County, Calif.; 25.0°C. D. B. Weissman, recording no. 97-18; used by permission.
spectrogram
 Click on sound bar to hear graphed song.
Sound spectrogram of 5 s of calling at 25°C (from DBW rec. 97-18). Dominant frequency 4.0 kHz.
spectrogram
 Click on sound bar to hear graphed song.
Sound spectrogram of first two chirps in 5s sound spectrogram; chirps are slowed to one-eighth speed.
Identification: In the field, this species is easily identified by its prolonged chirps. Morphologically it is characterized by a pubescent pronotum, a head narrower than the pronotum, and no individuals with hindwings shorter than the forewings. Gryllus assimilis, a closely related species known from south Florida and south-most Texas, is morphologically indistinguishable from G. multipulsator but its calling song has briefer chirps (8-10 pulses vs. 12-16 for multipulsator). In both species the pulses become more widely spaced (i.e., are produced at a slower rate) as the chirp progresses.
Life cycle: No diapausing stage, possibly making it easy to rear continuously for scientific or commercial purposes.
More information:
subfamily Gryllinae, genus Gryllus
References: Weissman, Walker & Gray 2009.
Nomenclature: OSF (Orthoptera Species File Online)
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