Raabella helensis Chatton and Lwoff, 1950

Hosts and countries: Brachidontes striatulus [cited as Modiolus (Modiolus) striatulus], India. Mytilaster minimus (cited as Mytilus minimus), Adriatic Sea. Mytilus edulis, Denmark; Poland; Sweden; USA; Baltic Sea. Mytilus galloprovincialis, Adriatic Sea; Black Sea. Mytilus trossulus, USA. Polymesoda caroliniana, Mexico.

References: Fenchel (1965); Lom & Kozloff (1968); Raabe (1970b); Jamadar & Choudhury (1988); Madrazo-Garibay & López-Ochoterena (1988a); Nandi et al. (1993); López-Ochoterena (1999); Hiebert (2016).