Euchoneira knoxi Licciano, Giangrande & Gambi, 2009, sp. nov. ...

• Main Authors: Licciano, Margherita, Giangrande, Adriana, Gambi, Maria Cristina
• Format: Text
• Language: unknown
• Published: Zenodo 2009
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Sabellida; Sabellidae; Euchoneira; Euchoneira knoxi; Adriana; Livingston Island; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.5281/zenodo.6213864; https://zenodo.org/doi/10.5281/zenodo.6213864

Euchoneira knoxi sp. nov. Figures 3, 4 Material examined. Type material: Holotype, on muddy-sand sediment mixed with gravel and small pebbles at 77 m depth off Livingston Island (62° 43.117 S; 60° 42.900 W), Gambi M.C. legit, MNCN 16.01/10650. Paratypes, 186 specimens from the same locality. PCZL 231: 10 specimens, SZN POLY 12: 172 specimens, AM W35683: 4 specimens. Description. Holotype complete with 8 thoracic and 30 abdominal chaetigers (Fig. 3) of which 9 form an anal depression (Fig. 4 C, D). Body length 3 cm; maximum width 0.3 cm (Fig. 3 A, B). Branchial crown length 0.7 cm, branchial lobes each with 16 fully developed radioles with palmate membrane developed for ¾ of length. Flanges present, radioles with filiform tip (Fig. 3 C). One or two dorsal “pinnular appendages” on the dorsal most radioles basally fused together and separated from remaining pinnules. Basalmost pinnular appendage highly developed and thicker (Fig. 3 E, F). Dorsal lips rounded, extending from inner, dorsal margin of branchial ... : Published as part of Licciano, Margherita, Giangrande, Adriana & Gambi, Maria Cristina, 2009, A new genus of Sabellidae (Annelida, Polychaeta) from Antarctica, with discussion of relationships among plesiomorphic genera within Sabellinae, pp. 28-42 in Zootaxa 2226 on pages 33-38, DOI: 10.5281/zenodo.190215 ...