Barklouse (or Psocid)

Scientific Name: Order Psocodea (subset Psocomorpha)

Order & Family: Order: Psocodea, Family: various (often Psocidae)

Size: 1 - 10 mm (most are under 6 mm)

Barklouse (or Psocid)

Natural Habitat

Typically found on tree trunks, under rocks, or in damp indoor environments near organic material.

Diet & Feeding

Feed on fungi, algae, lichen, and organic debris like pollen or starch.

Behavior Patterns

Often found in small groups; some species spin fine silk webs on bark for protection. They undergo simple metamorphosis (egg to nymph to adult).

Risks & Benefits

Harmless to humans; they provide ecosystem benefits by breaking down organic matter and grazing on fungi, though they can be minor household pests if moisture levels are high.

Identified on: 5/18/2026