Amphipsocidae

Distinguished from other barklice families by the combination of: (1) densely setose forewings with hairs on veins and wing margins, (2) two rows of setae lining the main forewing veins, and (3) broad, flat labrum with well-defined edges (shared with other Caeciliusetae). The hairy-winged condition is the primary diagnostic feature separating Amphipsocidae from most other Psocomorpha.

Small insects, 3.0–4.5 mm in length. Forewings densely covered with setae (hairs) along veins and margins; main veins typically bear two rows of setae. Members of this family share the infra-order trait of a broad, flat labrum with well-defined edges.

Widely distributed globally with strong regional endemism. The large genus Amphipsocus occurs in the Afrotropics and eastern Asia. Afrotropical endemics include Afropsocus, Capillopsocus, Ctenopsocus, Harpezoneura, Pentathyrsus, Schizopechus, and Xenopsocus. Eastern Asian endemics include Complaniamphus, Pseudokolbea, Siniamphipsocus, and Tagalopsocus. Polypsocus is endemic to the Americas. Europe has two species: Kolbia quisquiliarum and Brachypsocus badonneli. Documented from Scandinavia (Denmark, Norway, Sweden), Vermont (USA), and other regions.

• Other Psocomorpha familiesAmphipsocidae differs from most other Psocomorpha by the dense setation on forewing veins and margins; many other barklice families have relatively glabrous or sparsely haired wings.
• Other CaeciliusetaeShares the broad, flat labrum with well-defined edges, but Amphipsocidae is distinguished by the characteristic two rows of setae on main forewing veins and overall wing hairiness.

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life