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western stutter-trilling cricket

Gryllus integer Scudder 1902

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12 s of calling song; male from Fallon, Nevada; 3 pulses per group; 25.0°C. Recording by D. B. Weissman (S98-95, R98-129); used by permission.
13 s of calling song; male from Pima Co., Ariz.; 1-2 pulses per group; 26.0°C. Recording by D. B. Weissman (S98-65, R98-91); used by permission.
spectrogram
 Click on sound bar to hear graphed song.
Sound spectrogram of 2 s of calling at 26.0°C (from D. B. Weissman's S98-95, R98-129). Dominant frequency 4.8 kHz.
spectrogram
 Click on sound bar to hear graphed song.
Sound spectrogram of 2 s of calling at 26.0°C (from D. B. Weissman's S98-65, R98-91). Dominant frequency 4.9 kHz.
Song at 25°C: Song in some populations consists of sequences of 3-pulse units produced at a rate of ca. 17 units per sec. (see upper spectrogram). The effect is a "stutter trill." In other populations sequences of single pulses and of pairs are the rule (see lower spectrogram).
Remarks: As early as 1980 David B. Weissman began publishing the results of his field and laboratory studies of the Gryllus of the United States and Canada (Weissman et al. 1980). By 2003, David Gray had started his cooperation with Weissman by providing genetic analysis of the living Gryllus made available by Weissman's studies (e.g., Weissman, Walker, and Gray 2009). Weissman and Gray are now completing their plans for publishing their results regarding the Gryllus of US and Canada. Their target date is January 2019, and their results will be made publicly available on SINA as soon as possible.
More information:
subfamily Gryllinae, genus Gryllus
References: Cade & Tyshenko 1990; Hedrick 1986, 1988, 2000; Hedrick & Weber 1998; Smith & Cade 1987.
Nomenclature: OSF (Orthoptera Species File Online)
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