Newly discovered associations between peritrich ciliates (Ciliophora: Peritrichia) and scale polychaetes (Annelida: Polynoidae and Sigalionidae) with a review of polychaete-peritrich epibiosis Author Semprucci, Barbara Mikac Federica Author Guidi, Loretta Author Ponti, Massimo Author Abbiati, Marco Author Balsamo, Maria Author Dovgal, Igor text Zoological Journal of the Linnean Society 2020 188 939 953 journal article 0024-4082 GENUS COTHURNIA EHRENBERG , 1831 Diagnosis Marine, brackish or freshwater loricate peritrichs, usually with one or two zooids per lorica. Lorica borne on a stalk and attached to aquatic animals, plants or inanimate objects. Lorica without valves or other means of closing the aperture. Inner layer or septum sometimes present enclosing a space at the posterior end of the lorica; septum connected to the base of the lorica via a mesostyle. Zooid(s) attached to the base of the lorica (or septum) directly or via an endostyle ( Warren & Paynter, 1991 ).