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Painted Desert field cricket

Gryllus navajo Weissman & Gray 2019

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map holotype male males female
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male      
50 s of calling, from Coconino County, Ariz., 25°C. Dominant frequency 4.0 kHz. Recording by D.B. Weissman (S07-56, R07-61); used by permission.
This spectrogram is a 10 s excerpt of the 50 s audio file accessible above. The excerpt begins at 22 s.
spectrogram
Spectrogram showing first 4 chirps of 10 s sample above.
spectrogram
Song: Weissman and Gray (2019) described the song as a chirp with 4-5 pulses per chirp (range 3-6), 75-180 chirps per minute. Pulse rate 16-25.
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: Associated with Painted Desert red sandstone outcrops and escarpments and occasionally rocky outcrop areas. The crickets seem to live in cracks in the sandstone escarpment during the day then come down to the valley floor at night to forage.
Life cycle: No egg diapause; in the laboratory, multiple generations per year are possible but it is unclear how this translates to the field.
Season: Adults appear from mid-May to September and nymphs are present from June to August.
Name derivation: Named for the Diné people of the Navajo nation who inhabit the area where G. navajo ranges.
More information:
Subfamily Gryllinae, genus Gryllus.
References: Weissman and Gray 2019, pp233-258, pp254-258; Gray, Weissman, et al. 2020.
Nomenclature: OSF (Orthoptera Species File Online).
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