Amage micropaleata 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; Amage; Amage micropaleata; Drake Passage; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.6152264; http://treatment.plazi.org/id/20155B09EF19BF50FF17FA14FABBDD19

Amage micropaleata n.sp. Figs 3–5 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-26049]. Paratypes: ANDEEP I–II—st 42-2, EBS, 59°40.29'S – 59°40.32'S, 57°35.43'W – 57°35.64'W, Ona Basin/ Drake Passage, 3690 m (2 specimens, 1 x SEM, both 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 121-11, EBS, 63°38.27'S – 63°37.31'S, 50°37.16'W – 50°38.04'W, central Weddell Sea, 2668 m (1 specimen, 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) [ZMH-26050–26054]. Diagnosis: The species can be recognized by the presence of microscopic paleae. Description: Holotype 5 mm long, 1 mm wide. Paratypes 4–6 mm long and 0.9–1.1 mm wide at most expanded part. Thorax anteriorly expanded, gradually tapering towards transition to abdomen, then abruptly tapering towards pygidium (Fig. 3 A). Last three AUs expanded, giving the posterior end a cone-shaped appearance. Complete specimens with 7–9 AUs. Colour in ethanol white. Prostomium trilobed (Figs 3 B, 4A). Middle lobe with two distinct lateral horns. Anterior margins of lateral prostomial lobes, upper and lower lip expanded (Fig. 3 C). Nuchal organs present in crest separating prostomial lobes (Fig. 4 B). Buccal tentacles surface structure smooth (Fig. 4 A). TS-1 apparent through dorsal and ventral rudimentary sutures. TS-2 with minute paleae and rudimentary papilliform notopodial lobe (fig. 4C). Paleae few in number, with a smooth surface (Fig. 4 C) [often not apparent under low magnification]. Four pairs of branchiae originating from TS-2 to 5, last pair much smaller than first three (Fig. 3 A–C). Branchiae arranged in two lateral groups, clearly separated from each other. 1st and 2nd pair situated on transverse line on anterior margin of TS-3, 3rd pair on TS-4, and 4th pair positioned between TS-4 and 5. Segmentation between ...