Conservation Status
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Common.
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Cyclicity
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Adults fly from July to August.
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Distribution
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Presently known from the McKenzie delta, British Columbia south to Washington, Idaho and Utah, east across Canada and the northern tier of the states up to Quebec.
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General Description
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Adult antennae are brownish cream and the vertex is dark grey-brown. Thorax dark brown to orange laterally and the legs are pale dull brown . Male spur formula is 1, 4, 4 and females, 2, 4, 4. The tip of the male aedeagus is cut square, slightly rounded and with a rounded dorsal lobe (Nimmo, 1987).
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Habitat
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Larger, turbid rivers.
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Life Cycle
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Univoltine. Pupates from late May to late August.
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Trophic Strategy
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Larvae are omnivorous.
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