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., and L. gorgonaensis García Aldrete et al., are also described. The new species are assigned to the infrageneric groups recognized in the genus. The number of species of Loneura is raised to 35, of which 21 (73.2%) are from Colombia, making this country the most species rich for the genus. An identification key to the males of Loneura is included.

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. One species is from Brazil, four species are from Peru, one is from Nicaragua and two species are from Venezuela. Two species are shared between Colombia and Peru, one species is shared between Colombia and Venezuela, and 25 species are endemic to Colombia. An identification key to the males and a phylogenetic analysis of Ptiloneura are included.

On the genera Ptiloneura Enderlein, Loneura Navás, and Loneuroides García Aldrete (Psocodea: 'Psocoptera': Ptiloneuridae).

The Psocodea genera Ptiloneura Enderlein and Loneura Navás are redefined. Some species of Loneura are transferred to Ptiloneura. Loneuroides García Aldrete is synonymized with Ptiloneura. Ptiloneura ceases to be monotypic, and extends its distribution to Brazil, Colombia, Nicaragua and Venezuela.

New species of Loneuroides García Aldrete (Psocodea: 'Psocoptera': Ptiloneuridae) from Colombia, and description of the male L. venezolanus García Aldrete.

Six species of Colombian Loneuroides García Aldrete are here described and illustrated; also, the male of L. venezolanus García Aldrete is described, on basis of specimens from Valle del Cauca, Colombia. An updated diagnosis of the genus is presented; two species groups, based on the structure of the hypandrium, are recognized in the genus.

New species of Euplocania Enderlein (Psocodea: 'Psocoptera': Psocomorpha: Ptiloneuridae) from Colombia.

Seven species of Colombian Euplocania, are here described and illustrated, they increase to 16 the number of species in the genus, eight of which are endemic to Colombia. A new species group is also described.