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fall field cricket

Gryllus pennsylvanicus Burmeister 1838

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map size difference male calling female
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female female male genitalia Gryllus life cycles
21 s of calling song, male from Dyer County, Tenn., 24.4°C. Dominant frequency 4.7 kHz. (WTL489-28)
This spectrogram is a 2 s excerpt of the 21 s audio file accessible above. The excerpt begins at 15 s.
spectrogram
11 s of courtship song, male from Worcester County, Mass., 23°C. Recording by K. N. Prestwich, used by permission.
This spectrogram is a 2 s excerpt of the 11 s audio file accessible immediately above. The excerpt begins at 3.5 s.
spectrogram
Courtship song: The soft, nearly continuous, shuffling sounds have a dominant frequency similar to the calling song (4.7 kHz) as do the two-pulse chirps with strong harmonics that are the loudest sounds. In contrast, the brief (10 ms), periodic ticks have their strongest frequencies at about 12 kHz. When courting a female, some males omit the two-pulse chirps in the terminal phase of a successful courtship; others do not.
Identification: A key to the adult males of native US Gryllus is in Weissman and Gray (2019).
DNA: See Gray, Weissman, et al. (2020).
Habitat: In towns in cracks, under objects, in grassy vegetated areas, and in clay badlands.
Life cycle: One generation per year. Obligate egg diapause.
Season: Overwinter as eggs in diapause with first adults appearing in late July-early August.
Name derivation: In reference to the type series collected in Pennsylvania.
More information:
Subfamily Gryllinae, genus Gryllus.
References: Weissman and Gray 2019, pp46-69, pp48-54; Gray, Weissman, et al. 2020.
Nomenclature: OSF (Orthoptera Species File Online).
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