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buzzin frog

Big Mayfly

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Saw this at a lake with water temps in the mid to high seventies so i am a little perplexed,I'm assuming it came from a nearby stream, some of which do hold trout, any ideas? It was by far the largest mayfly i've ever seen.

 

DSCF0187.jpg

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My guess is Hexagenia limbata. They are a burrowing type Mayfly and inhabit lakes and slow streams with silty bottoms. They are big.

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I think we got those same mayflies here in Idaho.They fly a long way away from lake pend orielle before they shed there skin from duns to imagoes, or however that works.Like a couple of miles away from the lake!!!.That one looks like It has already shed its skin.

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The specimen is much too out of focus, I cannot key it out or positively ID it. It could be a hex but these insects range in appearance greatly region to region.

 

Good luck.

Druce

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Hexagenia limbata here in Texas, both here around Houston on the coast, and Waco, in Central Texas, look just like those from Michigan. The yellowish body and brownish spots on each segment definitely point to Hexagenia limbata, at least as I know it here in my area.

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