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 Capitella capitata (Fabricius, 1780) Capitella capitata (Fabricius, 1780) | Capitella capitata capitata (Fabricius, 1780) Notes Questionable status. Species complex. Several sibling species have been separated from Capitella capitata sensu lato worldwide since Grassle and Grassle (1976) showed it to constitute a complex of species. Blake (2009) restricts Capitella capitata sensu stricto to Arctic areas and considers Mediterranean specimens, including the description by Fauvel (1927) , to show significant differences to Capitella capitata and thus to belong to other species. In Greece, there is evidence so far of at least another sibling species population ( Gamenick et al. 1998 ). However, because of the high morphological similarity of the various sibling species, they cannot be reliably distinguished in routine investigations ( Blake 2000 ). See also notes under Capitella teleta Blake, Grassle & Eckelbarger, 2009.