Rhabdophrya nymphonis (Gassovsky, 1916)
Report as epibiont on bryozoans: It was reported on bryozoans from the Barents Sea near Murmansk (Jankowski 2007).
Report as epibiont on other hosts: The species was as epibiont on legs of sea spider Nymphon sp. collected in Kola Bay of the Barents Sea (Kahl 1934).