title: A pair of new sister species of Loneura (Psocodea, 'Psocoptera', Ptiloneuridae) from Valle del Cauca, Colombia, representing a new infrageneric group.
abstract: Two sister species of Loneura, from Valle del Cauca, Colombia, are here described and illustrated. They constitute a new species group that modifies the scheme of classification, proposed earlier for the genus by García Aldrete et al. (2011b). The new group is characterized by having the central sclerite of the male hypandrium with four posterior projections. A key to the males of Group II is included. The types are deposited in the Entomological Museum of the Universidad del Valle. Colombia may prove to be the most species rich area for Loneura.
authors.affiliation: Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Apartado Postal 70-153, 04510 México, D. F., MÉXICO.
authors.forename: Alfonso N García
authors.initials: AN
authors.lastname: Aldrete
authors.forename: Julián A Mendivil
authors.initials: JA
authors.lastname: Nieto
authors.forename: Ranulfo González
authors.initials: RG
authors.lastname: Obando