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What are these bugs on my maple tree? Are they harmful to the tree? Do they bite? Thank you.
What are these bugs on my maple tree? Are they harmful to the tree? Do they bite? Thank you.
What I would do without BugGuide.net!!?  I couldn’t really see the insects in the picture very well, so in BugGuide’s search box, I typed, “bugs on maple tree trunk.” And what popped up???– a picture of insects that looked exactly like yours. They are bark lice. They do not bite nor do they harm the tree. Here is the BugGuide link with more information: https://bugguide.net/node/view/83280
Thanks so much for sending a picture. I learned something too, this time!
Naturalist Linda Gilbert
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