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Arizona meadow katydid

Orchelimum unispina (Saussure and Pictet 1898)

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map male female ovipositor
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nymph male male cerci male cercus
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male      
20 s of calling song, Pima County, Ariz., 22°C. Peak frequency 14 kHz. (WTL1968-383)
This waveform is a 5 s excerpt of the 20 s audio file accessible above. Click on waveform to expand third syllable grouping.
waveform
Song data: Excel worksheet and chart (from spectrographic analyses).
Identification: Very similar to Conocephalus in general appearance - more slender than other Orchelimum species, and with a straight ovipositor (unlike the upcurved ovipositor of most Orchelimum). Shape of male cercus and calling song are distinctive.
Habitat: Prefers habitats with abundant tall grasses, usually with some trees interspersed. In AZ, found in riparian areas within canyons; in south TX, most common along margins of resacas (oxbow lakes).
Season: Adults appear early in summer (June) and may be found until the onset of cold weather, and mid-sized nymphs are common in midwinter. Likely the species overwinters as nymphs. Adults have been found in midwinter in south TX.
Remarks: Identification, Habitat, and Season were copied from BugGuide.
More information:
Subfamily Conocephalinae, genus Orchelimum.
Nomenclature: OSF (Orthoptera Species File Online).
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