Aquatic insects in Maine?

the_deeb

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Apr 22, 2006
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Recently took a trip up to Maine and when walking near a river I noticed a grassy flooded area that was filled with lots of small aquatic insects. They were probably ~1/4”-1/2”, slender, light brown and very active, swimming gracefully under the water looking a lot like small fish. The water was very cold - some areas were mostly frozen over and I could still see the little guys swimming around under the ice. Any ideas what these might have been? Maybe some sort of diving beetle larvae?
 

The Masked Shadow

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Jul 19, 2020
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Since my mom works at the Natural History Museum, and they have a paludarium with aquatic insects, I may know. Did they have yellow spots? Were they just brown? Were they swimming with their little leggies?
 
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