Redescription of Pseudoaugeneriella nigra (Langerhans, 1880), new combination (Polychaeta, Sabellidae), with remarks on some characters of Fabriciinae

The fabriciin sabellid species, Fabricia nigra Langerhans, 1880 from the Macaronesian region, is assigned to the genus Pseudoaugeneriella Fitzhugh, 1998, based on information provided by newly collected specimens. The species is redescribed, including the variability of key characters. Moreover, structures of the anterior end — dorsal lips, ventral filamentous appendages, peristomial rings — of Pseudoaugeneriella nigra and other species of Fabriciinae are studied histologically and by means of SEM. The systematic significance of these characters in Fabriciinae is discussed.