Orbinia Quatrefages, 1866

Leão, Luciana Sanches Dourado & Santos, Cinthya Simone Gomes, 2016, Orbinia (Polychaeta: Orbiniidae) from the Brazilian coast: two new species and two new records, Zootaxa 4105 (2), pp. 145-158 : 147

Genus Orbinia Quatrefages, 1866

Type species Aricia sertulata Savigny, 1822

Type locality. Atlantic Ocean, La Rochelle, France.

Diagnosis. Prostomium conical and pointed. Peristomium formed by one achaetous ring. Eyes present or absent. Branchiae from chaetigers 5–20; 14 to 40 thoracic chaetigers. Thoracic notochaetae crenulated capillaries. Thoracic notopodia with one or two postchaetal lobes. Abdominal notopodia with one postchaetal lobe, longer than the thoracic lobe. Furcated chaetae present or absent. Thoracic neuropodia with a papilliform lobe or fleshy lobe. Abdominal neuropodia uni- or bilobate. Thoracic neurochaetae uncinate spines, and crenulated capillaries may be present. Flail-tipped chaetae may be present. Papillae present on thoracic chaetigers, sometimes persisting in the abdominal chaetigers; papillae sometimes forming a continuous row across the ventral region of the body. Interramal cirri and subpodial lobes present or absent. Pygidium with one or two pairs of digitiform or cirriform anal cirri.