Peripsocus milleri
(Tillyard, 1923)
Peripsocus milleri is a of barklouse in the Peripsocidae, characterized by brown coloration. The species has been recorded across multiple regions including Great Britain, Ireland, continental Europe, and several Atlantic island groups. It is associated with oak trees as a feeding substrate.

Pronunciation
How to pronounce Peripsocus milleri: /pɛrɪpˈsoʊkəs ˈmɪləri/
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Images
Appearance
Brown colored body.
Habitat
Associated with oak trees (Quercus spp.), on which the feeds.
Distribution
Recorded from Great Britain, Ireland, Belgium, Croatia, France, Italy, Spain, Azores, Canary Islands, Madeira, Australia (Tasmania, Norfolk Island), New Zealand, Chile, and Hawaii (USA).
Diet
Feeds on oaks.
Host Associations
- Quercus - feeding substrateSpecifically noted as feeding on oaks, though precise part of plant (bark, leaves, lichens) is not specified in available sources.
More Details
Taxonomic Note
Originally described by Tillyard in 1923. The is placed in Psocodea (formerly ), an order of small, often overlooked insects commonly known as barklice or booklice.
Distribution Discrepancies
Wikipedia and iNaturalist sources list a more restricted European distribution (Great Britain, Ireland, Azores, Canary Islands, Belgium, Croatia, France, Italy, Spain), while GBIF records indicate a much broader global range including Australia, New Zealand, Chile, and Hawaii. The full extent of the native versus introduced range requires clarification.