Psocoptera (commonly called psocids) are one of the smaller orders of paraneopteran insects. Many species are arboreal, but a few are more usually found on low vegetation or in litter. All feed on microflora and organic debris. Some are found in nests of birds and mammals, within aggregations of other insects or associated with human habitations. The head of these usually soft bodied pterygote insects (with a body length of 0.67 mm to 8 mm) is globulous with an usually prominent clypeus and projecting eyes, long and filiform antennae and biting mouthparts, the laciniae being characteristic for the order. Adults have usually four wings with simple venation. However, many species are brachypterous, micropterous or apterous (Lienhard 1998, Lienhard and Smithers 2002, Mockford 1993, New 2005).
- British Insects Vol 1, Part 7. London: Royal Entomological Society. 146 pp.
- Gainesville, Florida: Sandhill Crane Press. 455 pp.
- Lienhard C (2002–2009). Additions and Corrections to Lienhard & Smithers, 2002 Psocoptera (Insecta) : World Catalogue and bibliography. Psocid News 4 (2002), 6 (2004), 7 (2005), 8 (2006), 9 (2007), 10 (2008) and 11 (2009). http://www.psocodea.org/psocid_news.
- Lienhard C, Smithers CN (2002) Psocoptera (Insecta): World Catalogue and Bibliography. Instrumenta Biodiversitatis 5. Genève: Muséum d’Histoire Naturelle. 745 pp.
- Mockford E L (1993) North American Psocoptera (Insecta). Flora and Fauna Handbook 10.
- New TR (2005) Psocids, Psocoptera (Booklice and barklice). Handbooks for the Identifi cation of
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