A NEW GENUS AND SPECIES OF POLYNOID SCALEWORM COMMENSAL WITH CHAETOPTERUS-APPENDICULATUS GRUBE FROM THE BANDA SEA (ANNELIDA, POLYCHAETA), WITH A REVIEW OF COMMENSALS OF CHAETOPTERIDAE

A sexually mature commensal polynoid not referable to any known genus or species was found in the tube of a Chaetopterus appendiculatus Grub e, 1874, from Ambon, the Banda Sea, Indonesia. The specimen is a compl ete male, characterized inter alia by 19 pairs of elytra on 46 segment s; unusually enlarged, anteriorly directed anterior pair of eyes; nume rous fine capillary notochaetae; numerous slender neurochaetae with lo ng, slender hoods with transverse rows of elongated scales. A new genu s and species are proposed for this taxon. The species is most similar to Paralentia tonkinica Uschakov, 1982, described from Hainan, South China Sea, which is herein transferred to the new genus. Commensals of Chaetopteridae are reviewed and a synoptic table of chaetopterid host s (16 species in 5 genera) and symbionts (15 polychaete species + 19 d ecapod species, accidentals excluded) is given.