Epipsocidae

Definition

A family of barklice (Psocodea: Psocomorpha) comprising approximately 16 genera and over 140 species, primarily distributed in tropical regions. Members of Epipsocidae share with other Epipsocetae a diagnostic labrum bearing two sclerotized ridges, and are further distinguished by the hairy ventral surface of the forewing. The family includes both fully winged and apterous species; the only European representative, Bertkauia lucifuga, is wingless.

Etymology

Example

Bertkauia lucifuga, the sole European epipsocid, is a small apterous barklice that inhabits dark, humid microhabitats such as caves and deep leaf litter, contrasting with the predominantly tropical, winged majority of the family.

Related Terms

• Psocodea
• Psocomorpha
• Epipsocetae
• barklice
• Labrum
• Apterous
• Bertkauia

Usage Notes

Epipsocidae is one of several families formerly grouped broadly under 'Psocoptera'; modern taxonomy places it firmly within Psocodea. The family is distinguished from related psocid families by the combination of epipsocetean labral structure and the characteristic pilose ventral forewing surface. Identification to family level in the field typically requires slide-mounted specimens and microscopic examination of wing venation and mouthpart sclerotization.