Data on trichodinid ciliophorans in Brazil are scarce and generally do not use the modern silver-impregnation technique, which is essential to the taxonomy of the group. The present study reports not only on the first occurrence of Trichodina heterodentata

During surveys on the symbionts of intertidal invertebrates along the rocky shores of South Africa, a heterotrichous ciliophoran was found on the gills of Oxystele sinensis (Gmelin, 1791). This ciliophoran species comprises an oral and basal regions connected

Licnophora chattoni, found in association with Zyzzyzus warreni, a tubulariid hydroid epizoic in sponges from São Sebastião (SP, Brazil), is redescribed and illustrated using light and electron microscopy. The ciliate has a flexible, transparent body