taxonID	type	description	language	source
9E6080162C7E4544FEA7A549490FC40F.taxon	description	(FIGS 2 – 12) urn: lsid: zoobank. org: act: 41 A 76 D 5 C- 0 B 56 - 4 C 7 B- ACAD-E 5531 A 723028 Diagnosis Ventral projections on pereonites 1 and 7 present, blunt and keeled in pereonite 1, spine-shaped in pereonite 7. Pereonite 7 with posterolateral tergite protrusions, similar to pereonites 5 and 6. Pleotelson narrower than pereonite 7; waist present; ventrolateral setal ridges present and not visible in dorsal view; posterior apex in male slightly concave. Pereopod III ischium dorsal lobe triangular, with one outstanding apical seta, seta spine-like, straight, bifid. Operculum elongate and ventrally roundedly keeled. Pereopod VII dorsal (posterior) margin row of elongate setae absent. Pleopod III exopod biarticulate. Uropod protopod and endopod of female of similar lengths. Etymology Macrostylis daniae sp. nov. is named after the first author’s wife Daniela Bober. Type fixation Holotype: adult female, 2.7 mm (ZMH K- 45919), designated here. Type material examined Table 3, Supporting Information S 1. Type locality North-west Pacific, abyssal plain south-east from KKT; RV Sonne stations SO 223 – 2 – 9, 02 – 03. August 2012, 46.2268 ° N, 155.5567 ° E, 4830 – 4864 m depth	en	Bober, Simon, Riehl, Torben, Henne, Stephan, Brandt, Angelika (2018): New Macrostylidae (Isopoda) from the Northwest Pacific Basin described by means of integrative taxonomy with reference to geographical barriers in the abyss. Zoological Journal of the Linnean Society 182: 549-603
9E6080162C7E4544FEACA6B94ED4C653.taxon	materials_examined	Type species: Macrostylis spinifera Sars, 1864	en	Bober, Simon, Riehl, Torben, Henne, Stephan, Brandt, Angelika (2018): New Macrostylidae (Isopoda) from the Northwest Pacific Basin described by means of integrative taxonomy with reference to geographical barriers in the abyss. Zoological Journal of the Linnean Society 182: 549-603
9E6080162C6A4550FEA1A0944933C22F.taxon	description	(FIGS 13 – 24) urn: lsid: zoobank. org: act: F 3936020 - 7319 - 42 D 1 - 825 F- F 3 F 97291 DCC 5 Diagnosis Ventral projection 1, and 3 – 7 present in females; ventral projections in males: pereonite 5 and 6 ventral projection absent. Pereonite 4 widest anteriorly and continuously narrowing towards posterior, not produced posteriorly, posterolateral setae absent; pleotelson waist present; operculum elongate; pleotelson L / W ratio in males greater than in females; male pleotelson of hourglass-like shape, with an anterior and a posterior convex outline separated by a concave waist; posterior apex short, laterally slightly convexly curved and medially truncate. Male aesthetascs of two types: (1) aesthetasc with intermediate belt of constriction, (2) aesthetasc with intermediate belt of constriction and additional single constriction in distal half. Pereopod III ischium dorsal lobe triangular; apex with 1 prominent seta; apical seta robust, sensillate, bifid and curved proximally, spine-like. Prominent coxal seta on pereopod VII. Pleopod I lateral horns clearly projecting distally beyond medial lobes. Etymology Macrostylis sabinae sp. nov. was named after the first author’s mother Sabine Bober. Type fixation Holotype: Adult female, 2.4 mm (ZMH K- 45908), designated here. Type material examined Table 3, Supporting Information S 1. Nineteen specimens of various stages and both genders used for DNA extraction. Type locality North-west Pacific, abyssal plain south-east from KKT; RV Sonne stations SO 223 – 2 – 9, 03. August 2012, 46.2268 ° N, 155.5567 ° E, 4830 – 4864 m depth.	en	Bober, Simon, Riehl, Torben, Henne, Stephan, Brandt, Angelika (2018): New Macrostylidae (Isopoda) from the Northwest Pacific Basin described by means of integrative taxonomy with reference to geographical barriers in the abyss. Zoological Journal of the Linnean Society 182: 549-603
9E6080162C67455CFEBCA5A84EEBC703.taxon	description	(FIGS 25 – 33) urn: lsid: zoobank. org: act: 3 A 7 E 5 E 92 - 28 BE- 41 FB- 9 CD 4 - D 8 FF 3 BF 7 FE 68 Diagnosis Similar to M. sabinae sp. nov. with some exceptions: Ventral projections 1, 3 – 7 present in females and males; pleotelson L / W ratio in males subequal to females. In contrast to adult males of M. sabinae sp. nov., the fifth segment of the first antenna is distinctly shorter with only one type of aesthetasc. Pereopod VII length to body-length ratio in females less than in M. sabinae sp. nov. Male pleotelson subrectangular, pleuropodal constriction weakly expressed. Pleopod I lateral horns not projecting distally beyond medial lobes. Etymology Macrostylis amaliae sp. nov. is named after the grandmother of the first author’s wife, Amalie Blume. Type fixation Holotype: Adult female, 2.1 mm, (ZMH K- 45914), designated here. Type material examined Table 3, Supporting Information S 1. Eight specimens of various age and both genders used for DNA extraction. Type locality North-west Pacific, abyssal plain south-east from KKT; 31.40 RV Sonne stations SO 223 – 10 – 6, 03 August 2012, 41 ° 11.99 ′ N, 150 ° 5.72 ′ E, 5251 m depth.	en	Bober, Simon, Riehl, Torben, Henne, Stephan, Brandt, Angelika (2018): New Macrostylidae (Isopoda) from the Northwest Pacific Basin described by means of integrative taxonomy with reference to geographical barriers in the abyss. Zoological Journal of the Linnean Society 182: 549-603
