Intraspecific wing venation and phallosome taxonomy updates in species of Loneura Navs (Psocodea, Ptiloneuridae), with one new species from cave and key to Loneura species from Brazil.

cavernicola sp. nov. is here described and illustrated, based on male and female specimens collected in caves located in an ecotone region between the Brazilian Savannah (Cerrado biome) and the Atlantic Forest, in Minas Gerais state, southeastern Brazil. Illustrations are provided of 19 types of variation in the fore and hindwings veins of males and females. Illustrations are presented of the holotype of L. maracaensis Garca Aldrete, along with illustrations of 18 types of variation in the fore and hindwing veins of males and females. Additionally, a new methodology applied in some specimens of L. maracaensis to process the genital pieces allowed us to know the arrangement and delimitations of each of the sclerites and their possible position during copulation. We therefore propose a phallosome taxonomic update. In these everted male genitalia, the spermatic sac and attached glands were identified for the first time. An identification key is presented to the Brazilian species of Loneura, based on males.

Identification key, checklist and new species of Loneura Navs (Psocodea: 'Psocoptera: Ptiloneuridae) from Brazil.

Four Brazilian species of Loneura are described and assigned to infrageneric groups: L. digitiformis n. sp., L. manauara n. sp., and L. marinonii n. sp, to Loneura group I, and L. duckei n. sp. to Loneura group II. This genus now comprises 45 species, of which 8 (18%) are from Brazil. Of these species, 19 are known only from males, 4 known only from females, 21 are known from both sexes, with one species of unknown sex. The infrageneric classification is based on the number of hypandrium sclerites, either one or three, and is based on the 40 species for which males are known, with 20 species in Group I and 20 species in Group II. An identification key to species from Brazil based on male characters is provided, together with a checklist.

A new species of Loneura Navás and taxonomic update of L. boliviana Williner and L. meridionalis García Aldrete (Psocodea: Psocomorpha: Ptiloneuridae).

A new species of Loneura named as Loneura willineri n. sp. is described from Bolivia, and and variation in the venation of the fore and hindwings discussed. Both sexes of Loneura meridionalis García Aldrete are described, inclulding variation in the fore and hindwing venation, and this species is withdrawn from synonymy with Loneura boliviana, a species now considered a nomen dubium.