Anobothrus wilhelmi 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 wilhelmi; King George Island; South Orkney Islands; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.6152274; http://treatment.plazi.org/id/20155B09EF0BBF4FFF17FB03FE30D8EE

Anobothrus wilhelmi n.sp. Figs 13–15 Holotype: 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 [ZMH-26068]. Paratypes: 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 (2 specimens, both incomplete), st 21-7, EBS, 47°39.87'S – 47°38.52'S, 04°15.79'E – 04°14.94'E, South Africa / South Atlantic, 4574 m (1 specimen, incomplete), 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 (8 specimens, 2 complete), st 78-9, EBS, 71°09.52'S – 71°09.34'S, 14°00.76'W – 13°58.85'W, eastern Weddell Sea, 2182 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 (7 specimens, 1 x SEM, 2 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 (1 specimen, complete), st 150-6, EBS, 61°49.13'S – 61°48.52'S, 47°27.51'W – 47°28.16'W, South Orkney Islands, 1970 m (1 specimen, incomplete), st 154-9, EBS, 62°32.52'S – 62°31.31'S, 64°39.45'W – 64°38.66'W, King George Island, 3784 m (1 specimen, incomplete) [ZMH-26069–26077]. Diagnosis: The species is easily recognized by the reduced size of the outermost pair of branchiae, giving the impression that the species only bears three pairs of branchiae, and the “hidden” position of the first notopodium directly posterior to the paleal base. Description: Holotype 16 mm long and 1.7 wide, incomplete with 5 AUs (Fig. 13 A–C). Complete paratypes (22 specimens, thereof 2 juveniles and 1 ovigerous) 2–10 mm long and about 0.1–1.2 mm wide, with 12–13 AUs when complete. Colour in ethanol white. Prostomium trilobed, middle lobe anteriorly rounded, without ridges (Fig. 14 A). Lower lip not enlarged. Nuchal organs and eyes present (Figs 13 A–C, 14B). Buccal tentacles smooth. TS-2 laterally only visible as a narrow lobe from which paleae originate, otherwise indistinct from TS-3. TS-3 notopodium (TC-1) reduced in size and ...