: Psocoptera. : Graphopsocus cruciatus.

The bark lice are a small order of minute, fungivorous, algivorous or detritivorous insects which can be found in most terrestrial habitats. They are most common on tree trunks, in foliage and on conifer needles, and many species have adapted to life in human dwellings. These include the well known booklice (Liposcelididae).

Bark lice Psocoptera
Creative Commons Attribution | Hallvard Elven | Leif Aarvik | Natural History Museum, University of Oslo