What's That Bug? does not endorse extermination

Bugs on our maple and oak trees
August 7, 2009
I noticed these dark patches on one of our maple trees. At first I thought it was patches of moss growing but when I looked closer, I saw that the patches were actually small bugs. I took a picture of the baby bugs and I have another of the adults with them. I walked my property and found that these patches of bugs were located on ALL my maple and oak trees but not the dogwood or the ash trees… Are these bugs a danger to the trees and if they are, what do I need to do to get rid of them?
Michelle
Southeastern Michigan

Barklice

Barklice

Hi Michelle,
This seems to be a bumper crop year for Barklice, Cerastipsocus venosus
, since we have receive so many letters in the past few weeks.  Barklice are benign insects that feed on lichens and will not harm the trees.

Barklice

Barklice

What's That Bug? does not endorse extermination

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