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Emilie Bess and Kevin P. Johnson taxon links [up-->]Notiopsocus [up-->]Asiopsocus [down<--]Caeciliusetae Interpreting the tree
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Containing group: Caeciliusetae


The family Asiopsocidae includes about 14 species in 3 genera with the center of diversity in Asia and Africa. Three species are known from North America: Asiopsocus sonorensis from the southwestern US, Notiopsocus sp. from southern Florida, and Pronotipsocus sp. from south-central Florida.

Asiopsocids are small to medium-sized bark lice, 2-3 mm in length.  The body color is generally brown.  Asiopsocids inhabit bark.  Sexual dimorphism is common in this family, with one sex lacking wings when the other has full wings.

The three genera in family Asiopsocidae are united by similarities in the female genitalia, but close study of the family is likely to divide the genera into two or more families.



General Characters

How to Know the Family

Family Monophyly

Monophyly of family Asiopsocidae is supported by two morphological characters: on the mandible, the lacinia has a broadened subapical region, and in the female, the dorsal valve of the gonapophyses is reduced and membranous.  Asiopsocidae is considered to be a weakly united family and future work is likely to divide the group into two or more families (Yoshizawa 2002).

Discussion of Phylogenetic Relationships

Relationships within the family Asiopsocidae have not been studied with molecular techniques.

Other Names for Asiopsocidae


Garcia Aldrete, A.N. and J. A. Casasola. 1995. A new species of Asiopsocus from Puebla, Mexico (Psocoptera: Asiopsocidae). Acta Zoologica Mexicana 66: 23-29.

Johnson, K. P. & E. L. Mockford. 2003. Molecular Systematics of Psocomorpha (Psocoptera). Systematic Entomology 28: 409-40

Lienhard, C. and C. N Smithers. 2002. Psocoptera (Insecta) World Catalogue and Bibliography. Muséum d'Histoire Naturelle, Geneva, Switzerland.

Mockford, E. L. 1993. North American Psocoptera (Insecta). Gainesville, Florida: Sandhill Crane Press.

New, T.R. 2005. Psocids, Psocoptera (Booklice and barklice), 2nd edition: Handbooks for the Identification of British Insects. Vol. 1, Part 7. Royal Entomological Society, London, UK.

Smithers, C. N. 1996. Psocoptera. Pp. 1-80, 363-372 (Index) in Wells A. (ed.) Zoological Catalogue of Australia. Vol. 26. Psocoptera, Phthiraptera, Thysanoptera. Melbourne: CSIRO Publishing, Australia.

Yoshizawa, K. 2002. Phylogeny and higher classification of suborder Psocomorpha (Insecta: Psocodea:'Psocoptera'). Zoological Journal of the Linnean Society 136: 371-400.

About This Page

Emilie Bess
Illinois Natural History Survey, Champaign, Illinois, USA

Kevin P. Johnson
Illinois Natural History Survey, Champaign, Illinois, USA

Correspondence regarding this page should be directed to Emilie Bess at and Kevin P. Johnson at

All Rights Reserved.

Citing this page:

Bess, Emilie and Kevin P. Johnson. 2009. Asiopsocoidea. Asiopsocidae. Version 25 March 2009 (under construction). http://tolweb.org/Asiopsocidae/30390/2009.03.25 in The Tree of Life Web Project, http://tolweb.org/

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