Taxa included

Feio, J.L. de Araújo (1945). Novos pseudoscorpiões de região neotropical (com a descriçao de uma subfamilia, dois géneros e sete espécies). Boletim do Museu Nacional Rio de Janeiro, n.s. Zoologia 44: 1–47.

Taxon
Tridenchthonius parvidentatus (Balzan, 1887) (Pseudoscorpiones: Chthoniidae) 3, Ditha parvidentata (Balzan)
Compsaditha fiebrigi (Beier, 1931) (Pseudoscorpiones: Chthoniidae) 3, Ditha fiebrigi
Albiorix argentiniensis (Hoff, 1950) (Pseudoscorpiones: Ideoroncidae) 4, (misidentification), Dinoroncus chilensis (Ellingsen)
Pachyolpium furculiferum (Balzan, 1892) (Pseudoscorpiones: Hesperolpiidae) 4, Pachyolpium furculiferum (Balzan)
Pachyolpium erratum Beier, 1931 (Pseudoscorpiones: Hesperolpiidae) 4, Pachyolpium erratum
Olpiolum elegans (Balzan, 1887) (Pseudoscorpiones: Olpiidae) 4, Olpiolum elegans (Balzan)
Pachyolpium crassichelatum (Balzan, 1887) (Pseudoscorpiones: Hesperolpiidae) 4, Pachyolpium crassichelatum (Balzan)
Geogarypus paraguayanus Beier, 1931 (Pseudoscorpiones: Geogarypidae) 4, Geogarypus (Geogarypus) paraguayanus Beier
Amblyolpium ortonedae (Ellingsen, 1902) (Pseudoscorpiones: Garypinidae) 4, Amblyolpium ortonedae (Ellingsen)
Progarypus novus Beier, 1931 (Pseudoscorpiones: Hesperolpiidae) 4, Progarypus novus
Albiorix chilensis (Ellingsen, 1905) (Pseudoscorpiones: Ideoroncidae) 4, (misidentification; see Albiorix argentiniensis (Hoff)), Dinoroncus chilensis (Ellingsen)
Americhernes ovatus (Balzan, 1892) (Pseudoscorpiones: Chernetidae) 5, Lustrochernes ovatus (Balzan)
Cheiridium itapemirinense (Feio, 1941) (Pseudoscorpiones: Cheiridiidae) 5, Geogarypus (Geogarypus) itapemirinensis
Chelifer (Atemnus) nidificator minor (Balzan, 1892) (Pseudoscorpiones: Cheliferidae) 5, Paratemnus minor (Balzan)
Lustrochernes subovatus (With, 1908) (Pseudoscorpiones: Chernetidae) 5, Lustrochernes subovatus (With)
Paratemnoides nidificator (Balzan, 1888) (Pseudoscorpiones: Atemnidae) 5, Paratemnus nidificator (Balzan)
Lustrochernes intermedius (Balzan, 1892) (Pseudoscorpiones: Chernetidae) 5, Lustrochernes intermedius (Balzan)
Lustrochernes silvestrii Beier, 1932 (Pseudoscorpiones: Chernetidae) 6, Lustrochernes silvestri (?) Beier
Lustrochernes argentinus (Thorell, 1877) (Pseudoscorpiones: Chernetidae) 6, Lustrochernes argentinus (Thorell)
Gomphochernes communis (Balzan, 1888) (Pseudoscorpiones: Chernetidae) 6, Lustrochernes communis (Balzan)
Gomphochernes perproximus Beier, 1932 (Pseudoscorpiones: Chernetidae) 6, Gomphochernes perproximus
Parachernes (Parachernes) crassimanus (Balzan, 1887) (Pseudoscorpiones: Chernetidae) 6, Parachernes (Argentochernes) crassimanus (Balzan)
Chelifer macrochelatus Tömösváry, 1884 (Pseudoscorpiones: Cheliferidae) 6, Cordylochernes macrochelatus (Tömösváry)
Cordylochernes brasiliensis Beier, 1932 (Pseudoscorpiones: Chernetidae) 6, Cordylochernes brasiliensis
Parachernes brevifemoratus Balzan, 1887 (Pseudoscorpiones: Chernetidae) 7, Pycnochernes brevifemoratus (Balzan)
Victorwithius rufus (Balzan, 1887) (Pseudoscorpiones: Withiidae) 7, Parawithius rufus (Balzan)
Victorwithius fiebrigi (Beier, 1932) (Pseudoscorpiones: Withiidae) 7, Parawithius fiebrigi
Dolichowithius (Dolichowithius) longichelifer (Balzan, 1887) (Pseudoscorpiones: Withiidae) 7, Dolichowithius longichelifer (Balzan)
Pseudopilanus foliosus (Balzan, 1887) (Pseudoscorpiones: Chernetidae) 7, Rhopalochernes foliosus (Balzan)
Pseudopilanus echinatus (Ellingsen, 1904) (Pseudoscorpiones: Chernetidae) 7, Rhopalochernes echinatus (Ellingsen)
Victorwithius venezuelanus (Beier, 1932) (Pseudoscorpiones: Withiidae) 7, Parawithius venezuelanus
Neochelanops patagonicus (Tullgren, 1900) (Pseudoscorpiones: Chernetidae) 7, Parazaona patagonicus (Tullgren)
Gigantochernes rudis (Balzan, 1887) (Pseudoscorpiones: Chernetidae) 7, Gigantochernes rudis (Balzan)
Neowithius dubius Beier, 1932 (Pseudoscorpiones: Withiidae) 8, Neowithius dubius
Victorwithius monoplacophorus Feio, 1944 (Pseudoscorpiones: Withiidae) 8, Victorwithius monoplacophorus
Dolichowithius (Dolichowithius) canestrinii (Balzan, 1887) (Pseudoscorpiones: Withiidae) 8, Dolichowithius canestrinii (Balzan)
Tyrannochelifer imperator (With, 1908) (Pseudoscorpiones: Cheliferidae) 8, Tyrannochelifer imperator (?) (With)
Neoditha irusanga Feio, 1945 (Pseudoscorpiones: Chthoniidae) 11–14, figs 1–5, Neoditha irusanga
Neoditha Feio, 1945 (Pseudoscorpiones: Chthoniidae) 11, Neoditha
Cryptoditha francisi (Feio, 1945) (Pseudoscorpiones: Chthoniidae) 14–16, figs 6a–c, 7, Verrucadithella francisi
Serianus birabeni Feio, 1945 (Pseudoscorpiones: Garypinidae) 17–20, figs 8–11, 12a–c, Serianus birabeni
Americhernes suraiurana (Feio, 1945) (Pseudoscorpiones: Chernetidae) 21–25, figs 13–17, Lamprochernes suraiurana
Pachychernes baileyi Feio, 1945 (Pseudoscorpiones: Chernetidae) 26–30, figs 18–24, Pachychernes baileyi
Neochernes melloleitaoi Feio, 1945 (Pseudoscorpiones: Chernetidae) 32–35, figs 25–26, 27a–b (as Neochernes mello-leitãoi), Neochernes melloleitaoi
Xenochernes caxinguba Feio, 1945 (Pseudoscorpiones: Chernetidae) 37–40, figs 28–32, Xenochernes caxinguba
Xenochernes Feio, 1945 (Pseudoscorpiones: Chernetidae) 37, Xenochernes