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 Syllis gracilis Grube, 1840 Notes Species complex. Originally described from the Gulf of Naples. Maltagliati et al. (2000) found two cryptic species of Syllis gracilis in Sardinia and western Italy, Alvarez-Campos et al. (2016) recover three cryptic species in the Mediterranean: one from Sicily and two from the North-Western Mediterranean. No material from the Eastern Mediterranean was studied, and specimens from Greece could belong to any of these or a different species.