Barklice

Underside of leaves, tree trunks, and branches of woody plants and shrubs

Feed on organic debris, fungi, algae, lichen, and pollen found on leaf surfaces or bark

Nymphs often congregate in large groups called herds. They move together across the leaf surface like a flock of sheep when disturbed. They go through several molts before reaching adulthood.

Completely harmless to humans and plants. They are beneficial scavengers that help clean the surface of the plant of debris without causing any damage to the foliage or bark.