What's That Bug? does not endorse extermination

Can you help?
Every year in August in Michigan( all through michigan), I see this web like mass in trees. I asked the locals, they had no clue what they were, they didn’t even notice them. Do you know what it is?
Yvette

Hi Yvette,
This is a Fall Webworm, Hyphantria cunea, nest. In the fall, these social caterpillars can build enormous webs that cover the leaves. Here is a site with more information.

What's That Bug? does not endorse extermination

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