Please identify this insect-

[Aimee729]

I found these insects today on 3 beautiful trees beside my house in the city of Chicago.
I was removing expired signage tied and stapled to the trees by the city.
When I removed the sign there were dozens of these insects swarming under the sign.
When I returned to take a picture they were all gone but this one. I think they all burrowed into the trees.
I'm so upset. What are these? Is there anything I can do to help save these beautiful trees?

Thanks for your help.

Aimee

 

[FJR]

That is an Earwig.

 

[JD3000]

Yep earwig. No worries except they like areas with decaying wood and organic matter. Any big wounds or visible decay evident on the tree?

 

[Aimee729]

No visible decay on the trees I can see. But lots of old houses! I'm going to do some reading on Earwigs.
Thanks so much for your prompt replies.

Aimee in Chicago