| # | Genus | Species | Author | Family | Links |
|---|---|---|---|---|---|
| 1 | Americhernes | guarany | (Feio, 1946) | Chernetidae | Data |
| 2 | Americhernes | ovatus | (Balzan, 1892) | Chernetidae | Data |
| 3 | Anisoditha | curvidigitata | (Balzan, 1887) | Chthoniidae | Data |
| 4 | Austrochthonius | paraguayensis | Vitali-di Castri, 1975 | Chthoniidae | Data |
| 5 | Cacodemonius | segmentidentatus | (Balzan, 1887) | Withiidae | Data |
| 6 | Compsaditha | fiebrigi | (Beier, 1931) | Chthoniidae | Data |
| 7 | Cordylochernes | scorpioides | (Linnaeus, 1758) | Chernetidae | Data |
| 8 | Dolichowithius | longichelifer | (Balzan, 1887) | Withiidae | Data |
| 9 | Dolichowithius | modicus | Beier, 1932 | Withiidae | Data |
| 10 | Dolichowithius | vicinus | Beier, 1932 | Withiidae | Data |
| 11 | Geogarypus | fiebrigi | Beier, 1931 | Geogarypidae | Data |
| 12 | Geogarypus | paraguayanus | Beier, 1931 | Geogarypidae | Data |
| 13 | Gigantochernes | rudis | (Balzan, 1887) | Chernetidae | Data |
| 14 | Gomphochernes | communis | (Balzan, 1888) | Chernetidae | Data |
| 15 | Ideoroncus | pallidus | Balzan, 1887 | Ideoroncidae | Data |
| 16 | Lamprochernes | savignyi | (Simon, 1881) | Chernetidae | Data |
| 17 | Lechytia | chthoniiformis | (Balzan, 1887) | Chthoniidae | Data |
| 18 | Lustrochernes | argentinus | (Thorell, 1877) | Chernetidae | Data |
| 19 | Lustrochernes | intermedius | (Balzan, 1892) | Chernetidae | Data |
| 20 | Neocheiridium | corticum | (Balzan, 1887) | Cheiridiidae | Data |
| 21 | Neowithius | exilimanus | (Balzan, 1887) | Withiidae | Data |
| 22 | Olpiolum | elegans | (Balzan, 1887) | Olpiidae | Data |
| 23 | Olpiolum | medium | Beier, 1931 | Olpiidae | Data |
| 24 | Pachychernes | subrobustus | (Balzan, 1892) | Chernetidae | Data |
| 25 | Pachyolpium | brevifemoratum | (Balzan, 1887) | Hesperolpiidae | Data |
| 26 | Parachernes | brevifemoratus | Balzan, 1887 | Chernetidae | Data |
| 27 | Parachernes (Parachernes) | crassimanus | (Balzan, 1887) | Chernetidae | Data |
| 28 | Parachernes (Parachernes) | subrotundatus | (Balzan, 1892) | Chernetidae | Data |
| 29 | Paratemnoides | nidificator | (Balzan, 1888) | Atemnidae | Data |
| 30 | Parawithius | iunctus | Beier, 1932 | Withiidae | Data |
| 31 | Parawithius | pseudorufus | Beier, 1932 | Withiidae | Data |
| 32 | Progarypus | oxydactylus | (Balzan, 1887) | Hesperolpiidae | Data |
| 33 | Progarypus | ramicola | (Balzan, 1887) | Hesperolpiidae | Data |
| 34 | Pseudopilanus | foliosus | (Balzan, 1887) | Chernetidae | Data |
| 35 | Tridenchthonius | parvidentatus | (Balzan, 1887) | Chthoniidae | Data |
| 36 | Tridenchthonius | parvulus | Balzan, 1887 | Chthoniidae | Data |
| 37 | Victorwithius | fiebrigi | (Beier, 1932) | Withiidae | Data |
| 38 | Victorwithius | rufus | (Balzan, 1887) | Withiidae | Data |