(of)Graff, L. von. (1886). Turbellarien von Lesina. Zool. Anz., 9: 338-342 page(s): 341 [details]
Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2025). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora. Cylindrostoma zooxanthella (Graff, 1886). Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=484602 on 2026-08-29
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Cylindrostoma zooxanthella (Graff, 1886). Accessed at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=484602 on 2026-08-29
Present 
