Bark louse : An insect of the family Coccidae, which infests the bark of trees and vines.

Example:


Taxonomy
Bark lice, trees, Oak Trees, insects, webbing, Entomology, see Photo, Alabama, Alabama Cooperative Extension System, Auburn University, psocids, feed, Professor, Booklice, Pest, Wayne Brewer, southern Alabama, Homeowners.

Defination from the web:
bark lice and though the tree is apparently not harmed, the "ghostly" appearance may be somewhat ... Bark lice apparently cause no damage to the trees and no control is recommended The webbing is quite thin and fragile and wears off as the season ...