New information on the biogeographical and ecological distribution of Pionosyllis anophthalma Capaccioni & San Martín, 1989 (Polychaeta, Syllidae)

Abstract

1 - Two individuals of the Mediterranean endemic species Pionosyllis anophthalma Capaccioni & San Martín, 1989 were found in a brackish water coastal lagoon in Northern Greece (Agiasma, Nestos river). 2 - The species is reported for the first time in Greece and in a non-tidal brackish water coastal lagoon. 3 - The record adds some new information concerning the geographical and habitat distributional ranges of the species. 4 - Pionosyllis anophthalma is associated with vegetated bottoms and shows a wide tolerance to salinity variations. 5 - An intraspecific morphological variation was observed in the material examined compared to the species’ holotype.