20 s of calling song, male from Westmoreland County, Va., 24.5°C. Dominant frequency 4.5 kHz. (WTL484-12)
This spectrogram is a 2 s excerpt of the 20 s audio file accesssible above. The excerpt begins at 15 s.
22 s of courting song, F1 male reared from female collected in Alachua County, Fla., 25.4°C. Dominant frequency of multipulse sequencies, 4.0 kHz; of high-intensity ticks, 11.7 kH. (WTL484-55)
This spectrogram is a 2 s excerpt of the 22 s audio file accessible above. The excerpt begins at 5 s.
21 s of fight song, F1 males reared from female collected in Alachua County, Fla., 25.4°C. Dominant frequency of all components 4.0 kHz. (WTL484-54)
This sound spectrogram is a 2 s excerpt of the 21 s audio file accessible above. The excerpt begins at 14 s.
20 s of fight song, F1 males reared from female collected in Alachua County, Fla., 25.0°C. Dominant frequency of all components 4.0 kHz. (WTL484-56)
This spectrogram is a 2 s excerpt of the 20 s audio file accessible above. The excerpt begins at 15 s.
Song:
Weissman and Gray (2019) described the song as having 3 pulses per chirp, 250-360 chirps per minute. Pulse rate 35-55 at 25°C.
Identification:
A key to the adult males of native US Gryllus is in Weissman and Gray (2019).
Woods, in leaf litter. (Males often climb a tree trunk to sing one or more feet above ground level.)
Life cycle:
Gryllus fultoni overwinters as a late juvenile and matures in spring. In most of its range there is a single generation. However, in north Florida some of the progeny of the spring adults mature in late summer and lay eggs that hatch in fall. It is uncertain whether juveniles from this partial second generation contribute to the following spring's cohort of adults (Walker 1974, Fig. 1 and text).
Season:
First field adults in mid-late May.
Name derivation:
In honor of BB Fulton, who first recognized G. fultoni as a distinct species.
