bark louse

Noun

 * 1)  Any insect of the family, that infest the bark of trees and vines.
 * 2) Any insect of the order, that live on or near trees and feed on algae and lichen.
 * 1) Any insect of the order, that live on or near trees and feed on algae and lichen.

Usage notes
Used as a synonym of (short form of ) in the vernacular name of certain scale insect species (superorder Coccoidea).

Synonyms

 * , psocid