Cyclicity
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In Illinois, adults can be found from mid-June to late August.
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Distribution
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Northeast from Minnesota, east to New Brunswick (Ross, 1944).
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General Description
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Adults are various shades of brown without any conspicuous markings. Male tenth tergite is composed of a pair of fairly long arms. The arms are sclerotized and wide at the base narrowing to a curved apical beak (Ross, 1944).
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Habitat
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Standing and flowing waters.
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Trophic Strategy
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Larvae are predacious.
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Oecetis osteni: Brief Summary
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Oecetis osteni is a species of long-horned caddisfly in the family Leptoceridae. It is found in North America.
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