taxonID	type	description	language	source
03EA9F087418FFE1CE93B1B4FBB1F8FC.taxon	description	405975 B 9 - C 3 FF- 4 CEE- 92 FF- 44 C 0 A 3671 AAD Figures 2 – 6 Type locality. Norwegian Sea, 72.367 ºN 14.895 ºE, 770 m depth. Type material. RV G. O. Sars MAREANO stn R 379 - 47, RP, 9 Apr 2009, holotype (ZMBN 94022), 2 paratypes mounted for SEM (ZMBN 94023), 19 paratypes (ZMBN 94024), 19 paratypes (ZMBN 94025) and 1 paratype (ZMBN 94026). Additional material. RV H. Mosby: Stn 81.03.21.1, 63.166 ºN 4.816 ºE, 830 m, 21 Mar 1981 (1 spec.); stn 81.06.04.4, 66.983 ºN 4.270 ºE, 1380 m, 4 Jun 1981 (1); stn 81.06.06.7, 65.716 ºN 5.238 ºE, 794 m, 6 Jun 1981 (34); stn 81.06.06.8, 65.666 ºN 4.815 ºE, 996 m, 6 Jun 1981 (9); stn 81.08.16.3, 62.800 ºN 1.043 ºE, 1009 m, 16 Aug 1981 (3); stn 82.01.21.2, 62.491 ºN 1.721 ºE, 604 m, 21 Jan 1982 (6); stn 82.01.21.4, 62.560 ºN 0.981 ºE, 804 m, 21 Jan 1982 (5); stn 82.01.21.6, 62.803 ºN 1.088 ºE, 984 m, 21 Jan 1982 (5); stn 82.08.15.1, 63.048 ºN 0.808 ºE, 1286 m, 15 Aug 1982 (2); stn 82.08.23.1, 63.213 ºN 3.121 ºE, 1003 m, 23 Aug 1982 (3); stn 82.11.26.1, 63.178 ºN 2.765 ºE, 1030 m, 26 Nov 1982 (1); stn 82.11.27.1, 62.985 ºN 3.218 ºE, 804 m, 27 Nov 1982 (73); stn 83.06.02.1, 62.198 ºN 0.003 ºW, 708 m, 2 Jun 1983 (15); stn 83.06.03.2, 60.201 ºN 6.625 ºW, 1220 m, 3 Jun 1983 (55); stn 83.06.08.1, 65.168 ºN 9.493 ºW, 784 m, 8 Jun 1983 (4); stn 83.06.08.2, 65.460 ºN 7.588 ºW, 1626 m, 8 Jun 1983 (3); stn 83.06.17.2, 62.338 ºN 1.411 ºW, 543 m, 17 Jun 1983 (1); stn 83.06.17.3, 62.593 ºN 1.233 ºW, 781 m, 17 Jun 1983 (18); stn 84.05.23.1, 62.585 ºN 1.793 ºW, 656 m, 23 May 1984 (328); stn 84.05.23.3, 62.508 ºN 1.851 ºW, 576 m, 23 May 1984 (5); stn 84.05.23.7, 62.411 ºN 1.540 ºW, 575 m, 23 May 1984 (2); stn 84.11.20.2, 63.133 ºN 1.895 ºW, 1087 m, 20 Nov 1984 (29); stn 84.11.21.1, 62.791 ºN 1.836 ºW, 811 m, 21 Nov 1984 (2); stn 85.01.08.1, 62.525 ºN 1.443 ºW, 701 m, 08 Jan 1985 (135); stn 85.01.08.2, 62.706 ºN 1.186 ºW, 897 m, 08 Jan 1985 (44); stn 85.01.12.2, 63.166 ºN 0.643 ºW, 1489 m, 12 Jan 1985 (1); stn 85.01.12.3, 63.048 ºN 0.796 ºW, 1293 m, 12 Jan 1985 (1); stn 86.06.13.1, 63.218 ºN 7.031 ºW, 1261 m, 13 Jun 1986 (1); stn 86.07.25.1, 69.023 ºN 8.410 ºW, 879 m, 25 Jul 1986 (10); stn 86.07.27.2, 70.810 ºN 9.728 ºW, 886 m, 27 Jul 1986 (6); stn 86.08.15.5, 62.610 ºN 1.573 ºW, 654 m, 15 Aug 1986 (26); stn 86.08.15.7, 62.843 ºN 1.431 ºW, 951 m, 15 Aug 1986 (15); stn 86.08.17.5, 62.996 ºN 1.140 ºW, 1143 m, 17 Aug 1986 (4); stn 86.08.17.6, 62.691 ºN 1.756 ºW, 750 m, 17.08.1986 (115). RV Meteor: Stn M 410 / 90, 74.843 ºN 15.377 ºW, 894 m, 16 Jul 1990 (79); stn M 507 / 90, 74.883 ºN 15.275 ºW, 991 m, 28 Jul 1990 (87). RV G. O. Sars MAREANO: Stn R 209 - 17, GR, 69.800 ºN 16.420 ºW, 1590 m, 5 Jun 2008 (1); stn R 209 - 18, GR, 69.800 ºN 16.420 ºW, 1590 m, 5 Jun 2008 (1); stn R 229 - 27, GR, 69.142 ºN 13.682 ºW, 1115 m, 11 Jun 2008 (1); stn R 232 - 34, GR, 69.407 ºN 14.696 ºW, 1408 m, 14 Jun 2008 (1); stn R 297 - 346, GR, 68.653 ºN 11.908 ºW, 807 m, 14 Oct 2008 (3); stn R 297 - 347, GR, 68.653 ºN 11.908 ºW, 807 m, 14 Oct 2008 (1); stn R 351 - 355, GR, 68.840 ºN 13.087 ºW, 765 m, 29 Oct 2008 (2); stn R 351 - 356, GR, 68.840 ºN 13.087 ºW, 765 m, 29 Oct 2008 (2); stn R 379 - 363, GR, 72.367 ºN 14.895 ºW, 760 m, 9 Apr 2009 (5); stn R 379 - 47, RP, 72.367 ºN 14.895 ºW, 770 m, 9 Apr 2009 (10); stn R 391 - 370, GR, 72.278 ºN 15.666 ºW, 729 m, 12 Apr 2009 (5); stn R 391 - 51, RP, 72.281 ºN 15.666 ºW, 728 m, 12 Apr 2009 (34); stn R 397 - 54, RP, 72.247 ºN 15.945 ºW, 635 m, 14 Apr 2009 (3); stn R 404 - 381, GR, 72.078 ºN 15.806 ºW, 621 m, 15 Apr 2009 (1); stn R 405 - 59, RP, 72.140 ºN 15.346 ºW, 899 m, 20 Apr 2009 (20); stn R 406 - 61, RP, 72.189 ºN 14.829 ºW, 1030 m, 21 Apr 2009 (20); stn R 444 - 148, RP, 71.741 ºN 15.236 ºW, 993 m, 20 Sep 2009 (7); stn R 776 - 51, BC, 68.189 ºN 10.362 ºW, 873 m, 3 May 2012 (1). Environmental monitoring: Stn V- 12, 67.002 ºN 5.334 ºW, 1330 m, 1 Jun 1998 (2). Diagnosis. A small species of up to 5 mm in length and 0.5 mm in width. Branchiae arranged close together; three pairs in anterior transverse row and last pair in a posterior position. Paleae long, thin and slender with curved tips, 9 – 12 on each side. Abdomen with 11 chaetigerous segments. Pygidium with two short conical lateral cirri and a number of small rounded papillae. Description. Holotype, complete, 4 mm long and 0.4 mm wide in thorax (fig. 2 A – B). Other complete specimens are up to 5 mm in length and 0.5 mm in width. Colour in alcohol pale yellow. Prostomium trilobed, without glandular ridges or eyes; prostomial median lobe delimited by deep lateral grooves, widest at the base, gradually narrowing to form acute, rounded frontal part (fig. 3 A – B). Paired nuchal organs as circular, ciliated spots located in lateral grooves at base of median prostomial lobe (fig. 3 B). Buccal tentacles with secondary filaments, pinnae; tips of pinnae covered by tufts of cilia (fig. 4 B – C). Four pairs of long branchiae on fused segment II + III; three pairs of branchiae arranged in anterior, transverse row without median gap, fourth pair slightly posterior to anterior row, between 2 nd outermost and innermost branchiae of anterior row (fig. 2 C). Bases of branchiae in anterior row completely fused, forming a characteristic and well-marked edge above head in frontal view (fig. 3 A – B). Branchiae of segment II in 2 nd outermost position of anterior row, branchiae of segment III in outermost position of anterior row, branchiae of segment IV in innermost position of anterior row, branchiae of segment V in posterior position (figs 2 C, 4 A). One pair of nephridial papillae, located dorsally between the two posterior branchiae on segment IV (figs 2 C, 4 A). Fused segment II and III with 9 – 12 long, thin and slender paleae on each side, with curved tips (figs 3 B, D, 5 A). Thorax and abdomen of similar length; thorax slightly wider than abdomen, slightly tapering posteriorly (figs 2 A, 3 C). Abdomen of similar width throughout, or slightly tapering posteriorly. A total of 14 thoracic segments with notopodia and capillary chaetae. Last 12 chaetigers of thorax with neuropodia and uncini (figs 2 A, 3 A, C). Notopodia simple, finger-shaped; first 2 reduced, remaining 12 up to 3 times longer than wide. Notochaetae as spinulose capillaries (fig. 5 F – G), arranged in double rows; capillaries from anterior row generally thinner and shorter than from posterior row. Thoracic neuropodia rounded to oval (fig. 3 C). Thoracic uncini with two vertical rows of 4 – 6 teeth above rostrum (fig. 5 B – C). Continuous ventral shields present to thoracic unciniger 8. A total of 11 abdominal uncinigers (fig. 2 A – B, 3 C). Anterior 2 abdominal segments with neuropodia as thoracic type (fig. 3 C); remaining abdominal uncinigers with enlarged neuropodia without cirri (figs 3 A, C, 5 D). Abdominal uncini with 4 vertical rows of 4 – 6 teeth above rostrum (fig. 5 D – E). Pygidium with terminal ciliated anal opening, surrounded by 2 short lateral cirri and small rounded papillae (figs 2 B, 4 D). Head and ventral shields dyed by methyl blue; anterior tip of prostomium with particularly strong colour (fig. 6 A – C). Tube unknown. Distribution. Common and widespread in the Nordic Seas in depths ranging from 600 – 1650 m (fig. 1). Etymology. The species is named after the Latin word for eleven, referring to the eleven abdominal segments. Remarks. Ampharete undecima sp. nov. is referred to the genus Ampharete based on the presence of a trilobed prostomium without glandular ridges, and with the median lobe delimited by deep grooves, buccal tentacles with pinnulae, the presence of four pairs of branchiae arising from the fused segment II + III, 12 thoracic uncinigers, and a single pair of nephridial papillae located dorsally on segment IV (Parapar et al., 2012; Imajima et al., 2012).	en	Alvestad, Tom (2014): Ampharete undecima, a new deep-sea ampharetid (Annelida, Polychaeta) from the Norwegian Sea. Memoirs of Museum Victoria 71: 11-19
