musical bush cricket
Hapithus melodius Walker 1977
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29 s of calling song [2.60MB]; male from Dade Co., Fla.: EVNP; 24.4°C. (WTL672-4a) |
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6 s of calling song [301KB]; same as above but truncated and down-sampled. |
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19 s of courtship song [1.67MB]; male from Martin Co., Fla.: Key Largo; 26.2°C. (WTL672-8c) |
Sound spectrogram of 12 s of calling at 24.4°C (from WTL672-4a).
Dominant
frequency increases from 4.4 to 4.9 kHz as pulse rate increases.
Click on first half of spectrogram to hear graphed song.
Click on last half of song to expand the last 12 pulses of the spectrographic
image.
Sound spectrogram of 12 s of calling at 26.2°C (from WTL672-8c). Dominant
frequency 5.3 kHz.
Click on spectrogram to hear graphed song.
Identification: Length 15–19 mm. Forewings covering less than two-thirds of abdomen; length of forewings generally more than 2.3 (males) or 2.2 (females) times medial length of pronotum. Stridulatory file with more than 70 teeth, 1.5 to 1.8 mm long.
Habitat: On grass and shrubby undergrowth, especially in pinewoods and in sawgrass marshes.
Season: June–Oct.
Song at 25°C: A musical, irregular tink, tink, tink that speeds up and becomes a trill of ca. 14 p/s. Each such sequence lasts 8-20 sec., with the carrier frequency gradually increasing by several hundred Hertz. Courtship singing resembles calling except that the tinks are more irregular and no trills are produced.
Similar species: Short-winged bush cricket--wings shorter; fewer than 70 teeth in stridulatory file; no calling song.
Remarks: This and the preceding species are closely related. They have not been found together, but specimens of the two collected 50 miles apart maintain their distinctive features.
More information: subfamily Eneopterinae, genus Hapithus
References: Walker 1977.
Nomenclature: OSFO2 (Orthoptera Species File Online)
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