Perkinsiana brigittae Tovar-Hernández, Yáñez-Rivera, Giangrande & Gambi, 2012, sp. nov.

• Main Authors: Tovar-Hernández, María Ana, Yáñez-Rivera, Beatriz, Giangrande, Adriana, Gambi, Maria Cristina
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Sabellida; Sabellidae; Perkinsiana; Perkinsiana brigittae; Antarc*; Antarctic; Antarctica; Wilkes Land
• Online Access: https://doi.org/10.5281/zenodo.6176773; http://treatment.plazi.org/id/03F78781FF89FFFBFF1AFBA9186AFDB4

Perkinsiana brigittae sp. nov. Figures 1 D–R, 2A–L, 3A–J, 4C Type material : Holotype (USNM 1180547) and four paratypes (USNM 1180548): Antarctica, Wilkes Land, Budd Coast, Wilkes Station, Station DX, 66° 21’ 14’’ S, 110° 28’ 09’’ E, U. S. Antarctic Research Program (USARP), Antarctica, December 0 3, 1961, 237 m. Additional materials : Smithsonian Oceanographic Sorting Center, U.S. Antarctic Research Program (USARP), Antarctica, Wilkes Station, Sta. DX, 66° 21’ S, 110° 28’ E, December 0 3, 1961, 238 m (38 spec.); 66° 22’ S, 110° 29’ E, December 13, 1961, 237– 256 m (2 spec.); 66° 17’ S, 110° 13’ E, January 0 5, 1962, 155– 326 m (12 spec.). ENSR, Marine and Coastal Center: Cruise ELTANIN 22, Sta. 1581, 56 ° 19’ S, 27° 29’ W, March 0 6, 1966, 148– 210 m (>100 spec). Cruise ELTANIN 27, Sta. 1885, 74 ° 30’ S, 170° 10’ E, January 16, 1967, 311– 328 m (95 spec). Islas Orcada, Sta. 575, 50 ° 11’ S, 37° 41’ W, May 0 9, 1975, 68–80 m (45 spec). Description (measurements based on holotype, data in brackets correspond to paratypes) Holotype and paratypes entire. Branchial crown longer than thorax, 18 mm length (23.5 mm, 17–27, n=4) with 16 pairs of radioles (19 pairs, 14–21, n=4). Radioles with 3–5 brown bands, each color band occupying five pinnules and color extending onto pinnules. Radioles united at the base by short web palmate membrane (Fig. 2 L). Flanges present (Figs 2 K, 4C). Tfwo or three ventralmost radiolar pairs poorly developed. Longest pinnules at midradioles. Radioles with filiform tips, as long as equivalent space of 10–12 pinnules (Fig. 2 K, 4C). Dorsal lips triangular erect with distinct longitudinal mid-rib forming two wide lateral lamellae (Figs 1 H–I, 2D) and dorsal pinnular appendages. Ventral lips broadly rounded (Figs 1 H–I, 2D). Lamellae parallel present. Triangular dorsal keel situated dorsal to mouth. A pair of ventral sacs located below mouth. Dorsal collar margins diagonal, not fused to faecal groove (Figs 1 D, 2A, E). Anterior peristomial ring level dorsally, exposed (Figs 1 D, F, 2A, E). ...