Naineris Blainville, 1828

Álvarez, Ricardo & Haggin, Brent M., 2024, Redescription of two species of Naineris (Annelida, Orbiniidae) with multiple dorsal organs and description of a new species from the NE Pacific, Zootaxa 5492 (3), pp. 395-408 : 396

Genus: Naineris Blainville, 1828

Type species: Naineris quadricuspida ( Fabricius, 1780) .

Diagnosis. (after Álvarez & Budaeva 2023) Prostomium rounded, truncated, or weakly bifid on anterior margin. Peristomium with one or two achaetous rings. Thorax with 12–30 or more segments; branchiae first present from chaetigers 2–23. Thoracic neuropodia with 0–2 postchaetal lobes; no subpodial lobes. Thoracic neurochaetae include capillaries, or capillaries mixed with blunt-tipped uncini, sometimes hooded, or uncini and subuluncini. Abdominal chaetae include capillaries, sometimes furcate chaetae in notopodia, and capillaries and embedded or protruding aciculae in neuropodia. Dorsal sensory organs paired or multiple, rounded or as elongated semicircles. Dorsal cilia present at base of branchiae in some species, either forming flat bands or crests.