What bug is this? - Ask Extension
Found many of these on our soft maple. When we knock on the wood, they move as a ripple. Is this hurting our tree? Or signs that tree not well?
Knowledgebase
What bug is this? #343111
Asked July 14, 2016, 11:49 PM EDT
Found many of these on our soft maple. When we knock on the wood, they move as a ripple. Is this hurting our tree? Or signs that tree not well?
Bremer County Iowa
Expert Response
From the pictures you sent, the insects look like bark lice. They usually cause no damage to trees. See the link below for more information:
http://enpp.auburn.edu/outreach/web-publications/bark-lice/
http://enpp.auburn.edu/outreach/web-publications/bark-lice/
