Stein, 1859
Adults nearly always loricate and stalked, with stalk persisting in some but not all endosymbiotic forms. Tentacles in few bundles or reduced to single organelle. Swarmer small, elliptical. In variety of habitats and on/in many hosts.
Planctonic species recorded:
Acineta tuberosa
Pelagacineta campanula
Pelagacineta interrupta