An appraisal of the genus Ptiloneura Enderlein (Insecta: Psocodea: Psocomorpha: Ptiloneuridae), new species from Colombia and Peru, and a key to the males.

We describe and illustrate 15 species of Ptiloneura, from Colombia and Peru. The number of species of Ptiloneura is raised to 34, of which 28 (82.3%) are Colombian.

The genus Loneura Navás (Insecta: Psocodea: 'Psocoptera': Ptiloneuridae) in Colombia, description of new species and key for identification.

We here describe and illustrate the following 14 new species of Loneura: altaquerensis; carijona; javierensis; koreguaje; magdalenensis; misak; murui; nonuya; occidentalis; orucapu; tatama; tayronensis; tendalensis; zuluagai. These are based on specimens recently collected in natural areas of Colombia; the females of L. colombiana García Aldrete et al.

New species of Euplocania Enderlein (Psocodea: 'Psocoptera': Psocomorpha), in three species groups, from Colombia and Ecuador.

Eight species of Euplocania from Colombia, in species groups Bonaverensis, Enderleini and Patinoi, are here described and illustrated. They raise to 40 the number of species described in the genus, 27 of which are found in Colombia. Of the Colombian species, one is shared with Ecuador and one is shared with Brazil and Peru.