What's That Bug? does not endorse extermination

Subject:  Found dozens dead by the river
Geographic location of the bug:  Western Massachusetts
Date: 08/14/2019
Time: 08:45 AM EDT
Your letter to the bugman:  Hello bugman-
I was walking by the river this morning and found dozens of these bugs dead on small rocks. I cannot identify them. Do you know what they are? And is it normal to come across what seems like a mass death? Thanks for any insight you can provide and keep up the amazing work!
How you want your letter signed:  Best wishes, Lucy

Stonefly Exuviae

Dear Lucy,
These are not dead insects.  They are the exuviae or shed exoskeletons of Stonefly naiads.  The aquatic larvae of Stonflies are aquatic, and when they approach maturity, they climb out of the water and molt for the final time, emerging as winged adults.  You did not encounter a “mass death” but rather, evidence of a mass emergence.

That is amazing! Thanks so much for letting me know. I’ll read up on this. So cool…
Every day in the woods is a new adventure. So much to learn and be awed by.
Thanks again for taking time to explain. I truly appreciate it.
Warmest regards,
Lucy
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What's That Bug? does not endorse extermination
Location: Massachusetts

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