Conservation Status
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Common.
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Cyclicity
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Adults fly between late May to late August.
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Distribution
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North in the Yukon and Northwest Territories, south to California and New Mexico. This species is restircted to the Cordillera west of the Great Plains, except one Quebec record.
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General Description
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Adult antennae are brown-cream, with the vertex of the head and thorax dark-brown. The legs are brownish-yellow with brown spurs. The dorso-posterior edge of segment 9 on the adult male, is developed into a pair of long uniform processes with ventrally directed acuminate tips (longer than the cerci). The claspers are a complex of lobes and teeth (Nimmo, 1987).
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Habitat
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All mountain or foothill streams/rivers.
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Life Cycle
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Larvae exhibit a two-year lifecycle.
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Trophic Strategy
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Larvae are predacious in the summer months and phytophagous at other times.
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