Dnestrovskaya N.Yu. 2025. Nephtys fabricii sp.n. (Annelida: Nephtyidae), a new species from the Northwest Atlantic // Invert. Zool. Vol.22. No.2: 261–273 [in English].
Department of General Ecology and Hydrobiology, Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory 1-12, Moscow 119234 Russia.
Nataliya Dnestrovskaya: ndnestro@mail.ru ORCID: https://orcid.org/0000-0002-3322-3193
doi: 10.15298/invertzool.22.2.04
ABSTRACT: A new species of Nephtyidae is described from the Gulf of Maine and Grand Banks of Newfoundland. This material was previously attributed to Nephtys caeca (Fabricius, 1780). The new species is characterized by the presence of branchiae from chaetiger 4, distinctly bilobed acicular lobes with a very deep incision in almost all chaetigers, and well developed postacicular lobes with very broad bases, approximately equal in length in both rami. Comparison with other species of the genus is provided.
KEY WORDS: Polychaeta, Gulf of Maine off Massachusetts, Grand Bank off Newfoundland, Northeast coast of USA and Canada, North Atlantic, sublittoral, shelf, upper slope.