Say, T. (1818). An account of the Crustacea of the United States (concluded). <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 1(2): 423-441.[details]
Boyko, C.B.; Campos-Filho, I.S.; Hadfield, K.A.; Hughes, T.; Merrin, K.L.; Ota, Y.; Poore, G.C.B. (Eds) (2025). World Marine, Freshwater and Terrestrial Isopod Crustaceans database. Porcellio nigra Say, 1818. Accessed at: https://www.marinespecies.org/isopoda/aphia.php?p=taxdetails&id=886182 on 2026-08-12
original descriptionSay, T. (1818). An account of the Crustacea of the United States (concluded). <em>Journal of the Academy of Natural Sciences of Philadelphia.</em> 1(2): 423-441.[details]
basis of recordSchmalfuss, H. (2003). World catalog of terrestrial isopods (Isopoda: Oniscidea). <em>Stuttgarter Beiträge zur Naturkunde Serie A (Biologie).</em> 654: 1-341., available online athttps://www.biodiversitylibrary.org/page/60882444[details] Available for editors