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Invertebrates of Flowing Water |
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Stream lacewing (Osmylus fulvicephalus) |
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Beautiful demoiselle (Calopteryx virgo) |
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A ground beetle (Nebria gyllenhali) |
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Banded demoiselle (Calopteryx splendens) |
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A mayfly (Ephemera danica) |
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A ground beetle (Agonum albipes) |
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Alder fly (Sialis lutaria) (requires very slow flowing water) |
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