What's That Bug? does not endorse extermination

Subject:  Insect on Carpinus caroliniana
Geographic location of the bug:  Dekalb County, IL
Date: 07/18/2018
Time: 03:56 PM EDT
Your letter to the bugman:  Never seen this on my prairie.
How you want your letter signed:  Jack Pizzo

Tree Cattle

Dear Jack,
We hope our response was not too late to save these benign Barklice or Tree Cattle.  Generally when insects congregate like this, they are plant pests, but Tree Cattle will not harm your tree.  They feed on lichens.

What's That Bug? does not endorse extermination
Location: Dekalb County, Illinois

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