Conservation Status
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Very common.
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Cyclicity
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Adults fly from late May to late August.
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Distribution
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Extends from British Columbia and Alberta, south to California and Wyoming.
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General Description
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Adult antennae are brown with each article annulated distally dark brown. The vertex of the head is a very dark brown. Legs are yellow with brown spurs. The lobes of segment 10 in males are without meso-dorsal processes. Clasper's distal article is indented on the distal edge (Nimmo, 1971).
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Habitat
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A large variety of mountain streams and rivers.
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Trophic Strategy
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Larvae are probably predacious.
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