Barklice (also known as Tree Cattle or Psocids)

Commonly found on the bark or leaves of various hardwood trees and woody shrubs in humid environments.

They feed on organic debris such as lichen, algae, fungi, and decaying plant matter found on tree surfaces.

They are known for congregating in large groups (herds) on tree trunks or foliage. When disturbed, the group moves in unison, similar to a herd of cattle. They undergo simple metamorphosis (egg, nymph, adult).

They are considered beneficial and harmless to humans and plants. They serve as a cleanup crew for trees by consuming surface debris, and they do not cause any structural or health damage to the host plant.