Taxa included

Mello-Leitão, C. (1939a). Pseudoscorpionidos de Argentina. Notas del Museo de La Plata 4: 115–122.

Taxon
Cecoditha Mello-Leitão, 1939 (Pseudoscorpiones: Chthoniidae) 115–116, Cecoditha
Austrochthonius parvus (Mello-Leitão, 1939) (Pseudoscorpiones: Chthoniidae) 116–117, figs 1a–b, Cecoditha parva
Lechytia chthoniiformis (Balzan, 1887) (Pseudoscorpiones: Chthoniidae) 117, Lechytia chthoniiformis (Balzan)
Neocheiridium corticum (Balzan, 1887) (Pseudoscorpiones: Cheiridiidae) 117, Neocheiridium corticum (Balzan)
Serianus patagonicus (Ellingsen, 1904) (Pseudoscorpiones: Garypinidae) 117, Neominniza patagonicus (Ellingsen)
Lustrochernes subovatus (With, 1908) (Pseudoscorpiones: Chernetidae) 118, Lustrochernes subovatus (With)
Mesochernes australis Mello-Leitão, 1939 (Pseudoscorpiones: Chernetidae) 118–120, fig. 2, Mesochernes australis
Lustrochernes intermedius (Balzan, 1892) (Pseudoscorpiones: Chernetidae) 118, Lustrochernes intermedius (Balzan)
Lustrochernes argentinus (Thorell, 1877) (Pseudoscorpiones: Chernetidae) 118, Lustrochernes argentinus (Thorell)
Gomphochernes communis (Balzan, 1888) (Pseudoscorpiones: Chernetidae) 118, Lustrochernes communis (Balzan)
Chelifer depressimanus With, 1908 (Pseudoscorpiones: Cheliferidae) 118, Gomphochernes depressimanus (With)
Paratemnoides nidificator (Balzan, 1888) (Pseudoscorpiones: Atemnidae) 118, Paratemnus nidificator (Balzan)
Pseudopilanus foliosus (Balzan, 1887) (Pseudoscorpiones: Chernetidae) 120, Rhopalochernes foliosus (Balzan)
Pseudopilanus echinatus (Ellingsen, 1904) (Pseudoscorpiones: Chernetidae) 120, Rhopalochernes echinatus (Ellingsen)
Chelifer nodulimanus Tömösváry, 1883 (Pseudoscorpiones: Cheliferidae) 120, Cordylochernes nodulimanus (Tömösváry)
Neochelanops michaelseni (Simon, 1902) (Pseudoscorpiones: Chernetidae) 120, Parachernes (Parachernes) michaelseni (Simon)
Parachernes (Parachernes) crassimanus (Balzan, 1887) (Pseudoscorpiones: Chernetidae) 120, Parachernes (Argentochernes) crassimanus (Balzan)
Pachychernes subrobustus (Balzan, 1892) (Pseudoscorpiones: Chernetidae) 120, Pachychernes subrobustus (Balzan)
Parazaona morenensis (Tullgren, 1908) (Pseudoscorpiones: Chernetidae) 121, Parazaona morenensis (Tullgren)
Parazaona nordenskjoldi (Tullgren, 1908) (Pseudoscorpiones: Chernetidae) 121, (as Parazaona nordenskioeldi [sic]), Parazaona nordenskjoldi (Tullgren)
Chelifer (Trachychernes) rotundimanus Ellingsen, 1910 (Pseudoscorpiones: Cheliferidae) 121, Chelanops rotundimanus (Ellingsen)
Neochelanops patagonicus (Tullgren, 1900) (Pseudoscorpiones: Chernetidae) 121, Parazaona patagonicus (Tullgren)
Sphenochernes bruchi (Mello-Leitão, 1925) (Pseudoscorpiones: Chernetidae) 121, Rhopalochernes bruchi (Mello-Leitão)
Cacodemonius segmentidentatus (Balzan, 1887) (Pseudoscorpiones: Withiidae) 121, Cacodemonius segmentidentatus (Balzan)
Dolichowithius (Dolichowithius) canestrinii (Balzan, 1887) (Pseudoscorpiones: Withiidae) 122, Dolichowithius canestrinii (Balzan)
Victorwithius proximus (Ellingsen, 1905) (Pseudoscorpiones: Withiidae) 122, Parawithius proximus (Ellingsen)
Victorwithius rufus (Balzan, 1887) (Pseudoscorpiones: Withiidae) 122, Parawithius rufus (Balzan)