Amage micropaleata Schüller & Jirkov, 2013, n.sp.

• Main Authors: Schüller, Myriam, Jirkov, Igor A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Terebellida; Ampharetidae; Amage; Amage micropaleata; Weddell Sea; Drake Passage; Weddell; Ona Basin
• Online Access: https://zenodo.org/record/6152264; https://doi.org/10.5281/zenodo.6152264

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, 4 A). 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. 4 C). 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. 1 st and 2 nd pair situated on transverse line on anterior margin of TS-3, 3rd pair on TS- 4, and 4 ...