Norden, A.W. (2008). Pseudoscorpions from Plummers Island, Maryland, with the reported use of empty snail shells by arthropods. Bulletin of the Biological Society of Washington 15: 52–53.
| Taxon | |
|---|---|
| Ephippiochthonius virginicus (Chamberlin, 1929) (Pseudoscorpiones: Chthoniidae) | 52, Chthonius virginicus |
| Tuberocreagris rufula (Banks, 1891) (Pseudoscorpiones: Neobisiidae) | 52, Tuberocreagris rufula (Banks) |