Tyler, S., Artois, T.; Schilling, S.; Hooge, M.; Bush, L.F. (eds) (2006-2024). World List of turbellarian worms: Acoelomorpha, Catenulida, Rhabditophora.
Utelga spinosa (Beklemischev, 1927) Karling, 1954. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024) European Register of Marine Species at: https://www.marbef.org/data/aphia.php?p=taxdetails&id=143161 on 2024-05-17
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024). European Register of Marine Species.
Utelga spinosa (Beklemischev, 1927) Karling, 1954. Accessed at: http://www.marbef.org/data../aphia.php?p=taxdetails&id=143161 on 2024-05-17