Polychaetes of Greece: an updated and annotated checklist Author Faulwetter, Sarah Author Simboura, Nomiki Author Katsiaras, Nikolaos Author Chatzigeorgiou, Giorgos Author Arvanitidis, Christos text Biodiversity Data Journal 2017 5 20997 20997 http://dx.doi.org/10.3897/BDJ.5.e20997 journal article http://dx.doi.org/10.3897/BDJ.5.e20997 1314-2828--20997 Prosphaerosyllis tetralix (Eliason, 1920) Sphaerosyllis tetralix Eliason, 1920 Notes Questionable status. Reported from Greece by Dando et al. (1995) ; the record by Zenetos et al. (1997) probably belongs to a different species. Records from throughout the Mediterranean exist but at least some of them belong to other species ( Faulwetter et al. 2011a ) and the species is probably restricted to the colder waters of the North Sea and North-East Atlantic ( Olivier et al. 2012 ). During the last years, several new Prosphaerosyllis species have been described from Europe and the Mediterranean and Mediterranean species of the genus need to be revised. The Greek record is from near hydrothermal vents where temperatures are probably unfavourable for the species and must be considered questionable.