Peters' barklouse

Ectopsocus petersi · Order: Psocodea · Family: Ectopsocidae

Also called: Medium-sized bark louse

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Peters' barklouse
Photo: Benjamin ZELVELDER, CC BY

Peters' barklouse is a brownish-orange psocid that looks like Ectopsocus briggsi.

Source: Wikipedia

How to recognize it

The insect is brownish-orange in colour and resembles Ectopsocus briggsi.

Source: Wikipedia

Where it comes from

It occurs in Great Britain and Ireland.

Source: Wikipedia

Lookalikes

It is similar in appearance to Ectopsocus briggsi.

Source: Wikipedia

Where it is found in the US

Recorded in 1 of 51 states and DC. Most records: Washington.

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Same family (Ectopsocidae)

EctopsocidEctopsocidEctopsocus briggsiLarge-winged PsocidLarge-winged PsocidEctopsocopsis cryptomeriae

Sources

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

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

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.

How this page works

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.

Every fact on Bug FAQ comes from a named source (university extension sites, government agencies, GBIF, iNaturalist, Wikipedia). The source is linked next to each section. If we have no source for something, we leave it out.