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 Opisthosyllis brunnea Langerhans, 1879 Notes Reported from Greece by Faulwetter et al. (2011a) and Keklikoglou et al. (2013) . Widely distributed in the Mediterranean ( Musco and Giangrande 2005 ). Considered cosmopolitan, but Paresque et al. (2016) found morphological differences between specimens from different localities and raise the possibility of Opisthosyllis brunnea constituting a species complex.