54 s of calling, from Pima County, Ariz., 25.3°C. Dominant frequency 4.8 kHz. Recording by D.B. Weissman (S15-108, R15-289); used by permission.
This spectrogram is a 10 s excerpt of the 54 s audio file accessible above. The excerpt begins at 8 s.
Sound spectrogram showing first 2 "trills" of 10 s sample above.
Song:
Weissman and Gray (2019) described the song as an irregular "trill" with groupings of 1-13 pulses, pulse rate 22-41 at 25°C. Songs may be long, uninterrupted "trills" or have sections where the pulses are clustered in threes.
Identification:
A key to the adult males of native US Gryllus is in Weissman and Gray (2019).
Both dry (open Sonoran Desert) and wet areas inhabited by humans (lawns, base of palm trees, irrigated gardens), gas stations, cracks in structures and sidewalks and in deep, dry soil.
Life cycle:
Possibly one or two generations per year, may vary due to amount of rainfall.
Season:
Late March through August.
Remarks:
Gryllus cohni and G. vocalis were found living in the same habitat in a semi-garden area in Ajo, Arizona. Specimens were not found on later visits to the area.
Name derivation:
Named in honor of the Orthopterist Theodore J. Cohn.
