Large barklouse

Psococerastis gibbosa · Order: Psocodea · Family: Psocidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Large barklouse
Photo: Martin Andersson, CC BY-SA 3.0

Large barklice are yellowish-black and have striped bodies. They are found in Great Britain, Ireland and many European countries including Austria, France, Germany and Scandinavia. They feed on a variety of trees such as ash, oak and pine and will also eat apples.

Source: Wikipedia

How to recognize it

They are yellowish-black with stripes.

Source: Wikipedia

What it eats

They feed on ash, oak, pine and other trees and will sometimes eat apples.

Source: Wikipedia

Where it comes from

They occur in Great Britain and Ireland and are also common in many European countries such as Austria, France, Germany and Scandinavia.

Source: Wikipedia

More photos

Large barklouse photo 2
Photo: Sanja565658, CC BY-SA 3.0
Large barklouse photo 3
Photo: AfroBrazilian, CC BY-SA
Large barklouse photo 4
Photo: janetgraham84new, CC BY 2.0

Same family (Psocidae)

Tree CattleTree CattleCerastipsocus venosusCloudy brown barklouseCloudy brown barklouseMetylophorus nebulosusBrown-banded barklouseBrown-banded barklouseLoensia fasciata

Sources

  • Wikipedia: https://en.wikipedia.org/wiki/Psococerastis_gibbosa

Look it up elsewhere: GBIF · iNaturalist · BugGuide · Wikipedia

Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.

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This is one bug's fact sheet. The colored box at the top says whether it is dangerous. Sections below cover how to recognize it, whether it is a pest, and how to deal with it. The US map shows which states have records; tap a state to see other bugs there.

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