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different-horned tree cricket

Oecanthus varicornis F. Walker 1869

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map male antennae female
15 s of calling song; male from Hidalgo Co., Tex.; 25.0°C. (WTL593-7)
spectrogram
 Click on sound bar to hear graphed song.
Sound sprectrogram of 2 s of calling at 25.0°C (from WTL593-7). Dominant frequency 3.8 kHz.
Song at 25°C: Continuous, musical trill at 76 p/s and 3.7 KHz.
Song data: Excel worksheet and chart (from spectrographic analyses).
Identification: Length 15–18 mm. Third segment of the antenna usually much darker than the second; stridulatory file 0.86–1.20 mm long with 26–36 teeth.
Similar species: Texas and western tree crickets—more than 40 teeth in stridulatory file, calling songs with pulse rates <65/s.
Habitat: Xeric woodland; often high in vine-covered trees.
Season: Apparently year round; adults collected all months except October and November.
Remarks: Different-horned tree crickets often sing from higher perches than is characteristic of the other members of the broad-winged species group of Oecanthus.
More information:
genus Oecanthus, subfamily Oecanthinae.
References: Walker 1962, 1967. Collins 2010-date.
Nomenclature: OSF (Orthoptera Species File Online)
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