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Identification:
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LENGTH:
LENGTH As used in descriptions of whole insects on this site, length was measured with dial calipers from the head of the specimen to the tips of the forewings (at rest) or to the tip of the abdomen, whichever was longest. In females, the measurement excluded the ovipositor but included the subgenital plate. In males, the measurement included any ventral or dorsal abdominal process.
17–26 mm. Male subgenital plate lacking ventrally directed process.
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Habitat:
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Forest characterized by yellow pine and, at higher elevations, by interior Douglas fir.
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Season:
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May–July.
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Song at 25°C:
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A succession of short trills consisting of long duration pulses produced at a rate of about 54/s. The carrier frequency is nearly pure and about 13 kHz. Males call at night and stay within a meter of the forest floor.
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Similar species:
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Other hump-winged grigs—male subgenital plate with ventrally directed process.
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More information:
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Family Prophalangopsidae.
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Nomenclature:
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OSF (Orthoptera Species File Online).
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