Anobothrus paleaodiscus Schüller & Jirkov, 2013, n.sp.

• Main Authors: Schüller, Myriam, Jirkov, Igor A.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Ampharetidae; Anobothrus; Anobothrus paleaodiscus; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.6152270; http://treatment.plazi.org/id/20155B09EF13BF49FF17FA3FFDE4D906

Anobothrus paleaodiscus n.sp. Figs 8–9 Holotype: ANDEEP III—st 133-2, EBS, 62°46.73'S – 62°46.33'S, 53°02.57'W – 53°04.14'W, central Weddell Sea, 1582 m [ZMH-26058]. Paratypes: ANDEEP I–II—st 133-3, EBS, 65°20.15'S – 65°20.09'S, 54°14.35'W – 54°14.36'W, central Weddell Sea, 1123 m (1 specimen, incomplete), ANDEEP III—st 16-10, EBS, 41°07.55'S – 41°07.02'S, 09°55.94'E – 09°54.85'E, South Africa / South Atlantic, 4720 m (1 specimen, complete), st 74-6, EBS, 71°18.42'S – 71°18.33'S, 13°58.21'W – 13°57.65'W, eastern Weddell Sea, 1047 m (1 specimen, incomplete), st 81-8, EBS, 70°31.08'S – 70°32.23'S, 14°34.82'W – 14°34.90'W, eastern Weddell Sea, 4419 m (5 specimens, 1 x SEM, 1 complete), st 133-2, EBS, 62°46.73'S – 62°46.33'S, 53°02.57'W – 53°04.14'W, central Weddell Sea, 1582 m (5 specimens, 1 complete) [ZMH-26059–26064]. Diagnosis: The species can foremost be recognized by its prominent, long paleae that originate from a disc-like epidermal structure, and the enlarged anterior neuropodia. Description: Holotype 11 mm in long and 1.2 wide, with 2 AUs, incomplete. Paratypes 2–13 mm long and about 0.3–1.3 mm wide, with 12 AUs when complete (Fig. 8 A). Colour in ethanol white. Prostomium trilobed, middle lobe anteriorly rounded, without ridges (Fig. 8 B). Lower lip not enlarged. Nuchal organs and eyes present. Buccal tentacles all retracted, surface structure unknown. TS-2 bearing>10 prominent paleae originating from an epidermal disc (Figs 8 A, B). Paleae somewhat golden-coloured, long and stout at base with fine tips, arranged in an almost closed circle, anteriorly protruding the prostomium [sometimes meeting in midline]. Four pairs of branchiae (Fig. 8 B). Anterior three pairs attached to each other across dorsum, arranged in an almost straight line forming a prominent ridge. Fourth pair attached only slightly posterior to second outermost pair, connected with notopodia of TC-3 (TS-5). Diameter of all branchiae more or less equal. Branchiae smooth. 15 TCs. TC-1 (TS-3) with notopodia distinctly less developed than ...