identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
1F4E481E1F8359F894219465E3326823.text	1F4E481E1F8359F894219465E3326823.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Austrosyrrhoe hamptonae Hughes & Tandberg 2026	<div><p>Austrosyrrhoe hamptonae sp. nov.</p><p>Figs 1, 2, 3, 8</p><p>Type material.</p><p>Holotype: Pacific Ocean • female, 5.9 mm, Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.51517&amp;materialsCitation.latitude=11.794617" title="Search Plazi for locations around (long -117.51517/lat 11.794617)">BGR exploration contract area</a>, R /V Sonne, MANGAN 2018, EBS, SO 262-155, 9 May 2018, 11°47.436'N, 117°32.213'W – 11°47.677'N, 117°30.910'W, 4352– 4351 m, SMF 63342, COI: PQ 734768 . Paratypes: Pacific Ocean • juvenile, 2.5 mm, Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-118.02085&amp;materialsCitation.latitude=11.618417" title="Search Plazi for locations around (long -118.02085/lat 11.618417)">BGR exploration contract area</a>, R/V Kilo Moana, MANGAN 2023, EBS, KM 23-69, 4 May 2023, 11°36.252'N, 118°02.981'W – 11°37.1050'N, 118°01.2511'W, 4368– 4356 m, SMF 63344, COI: PQ 734518 • male, size undetermined, Clarion-Clipperton Zone, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-138.09515&amp;materialsCitation.latitude=12.0598135" title="Search Plazi for locations around (long -138.09515/lat 12.0598135)">BGR exploration contract area</a>, R/V Kilo Moana, MANGAN 2023, EBS, KM 23-7, 17 Apr 2023, 12°02.2976'N, 138°05.4932'W – 12°03.5888'N, 138°05.7092'W, 5109–5139 m, SMF 63343, COI: PQ 734493 .</p><p>Other material.</p><p>Pacific Ocean • unsexed (head only), not measured, Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-118.02085&amp;materialsCitation.latitude=11.618417" title="Search Plazi for locations around (long -118.02085/lat 11.618417)">BGR exploration contract area</a>, R/V Kilo Moana, MANGAN 2023, EBS, KM 23-69, 4 May 2023, 11°36.252'N, 118°02.981'W – 11°37.1050'N, 118°01.2511'W, 4368– 4356 m, DSB_8459, COI: PQ 734598 .</p><p>Diagnosis.</p><p>Gnathopods 1–2 propodus palm defined by serrate robust seta. Pereopod 3 coxa anterodistal lobe produced subovate, posterodistal lobe absent. Pereopods 5–6 basis subovoid. Pleonites 1–3 posterodistal margin smooth with single acute convex dorsal margin, with posterior minute dorsal process. Epimera 1–3 posterior margin concave, posterodistal corner with small acute tooth. Urosomite 1 dorsal margin smooth with small acute dorsal process. Urosomite 2 dorsal margin smooth with acute process directed posteriorly. Urosomite 3 posterior margin with setal fringe.</p><p>Description.</p><p>Head (Figs 1, 2) not protuberant; rostrum long, directed ventrally, apically acute; lateral cephalic lobe subtriangular; eyes unknown; accessory eyes unknown. Antenna 1 unknown. Antenna 2 flagellum more than 7 - articulate, broken. Mandible palp article 2 with many slender setae; article 3 with many slender apical setae; right lacinia mobilis 3 dentate; molar greatly enlarged, smooth, not triturative, accessory setal row with two setae on left. Maxilla 1 inner plate unknown, outer plate with nine robust setae, palp article 2 with three apical robust setae. Maxilliped not foliaceous.</p><p>Pereon (Figs 1, 3). Pereonites 1–7 dorsal margin smooth, without lateral ridge. Gnathopod 1 subchelate; coxa anterior margin produced, rounded, not tapering distally; basis length subequal to carpus; propodus palm subacute / oblique, defined by serrate robust seta; dactylus well developed, with posterior margin with several teeth. Gnathopod 2 subchelate; coxa not distally tapering; basis longer than carpus; propodus palm subacute / oblique, defined by one serrate and one smooth robust seta; dactylus well developed, posterior margin with one tooth. Pereopod 3 pelagont (dominant over coxa 4), coxa anterodistal lobe produced subovate, posterodistal lobe absent. Pereopod 4 coxa smaller than coxa 3, lobate in shape, with well-developed posteroventral lobe half the depth of the posterior margin. Pereopods 5 and 6 bases subovoid, posterodistal lobe not extending below ischium, posterior margin broadly serrate. Pereopod 5 basis posterior margin weakly subquadrate.</p><p>Pleon (Figs 1, 2). Pleonites 1–3 posterodistal margin smooth with single acute, convex dorsal margin, with posterior minute dorsal process. Epimera 1–3 posterior margin concave, posterodistal corner with small acute tooth. Urosomite 1 dorsal margin smooth with small acute dorsal process. Urosomite 2 dorsal margin smooth with acute process directed posteriorly. Urosomite 3 posterior margin with setal fringe. Uropod 3 length exceeding uropods 1 and 2; peduncle long, length twice breadth. Telson length more than two times breadth (broken), longer than uropod 3 peduncle, moderately cleft along 1 / 3 length, without setae along the lateral margin, apical setae unknown.</p><p>Etymology.</p><p>Named for Jacqueline B. Hampton, who illustrated amphipods of the north eastern Pacific from the Cedros Trench and offshore of the Columbia River, Oregon, in the 1960 s and 1970 s publications of Jerry Barnard.</p><p>Molecular identification.</p><p>Following the definition given by Pleijel et al. (2008), the sequence of the holotype male of Austrosyrrhoe hamptonae sp. nov. (SMF 63342, GenBank accession number PQ 734768) is designated as a hologenophore of all obtained sequences. The sequences of the paratypes and non-type collection of the species are deposited in GenBank with the following accession numbers: PQ 734493, PQ 734518, PQ 734598. The species has also received a Barcode Index Number from Barcode of Life Data Systems: BOLD: AEB 6000 (https://doi.org/10.5883/BOLD:AEB6000).</p><p>Remarks.</p><p>Austrosyrrhoe hamptonae sp. nov. can be separated from other species in the genus by the urosomite dorsal carination pattern, with urosomite 1 dorsal margin smooth with a small acute tooth, urosomite 2 dorsal margin with an acute process, and urosomite 3 posterior margin with a setal fringe.</p><p>Austrosyrrhoe hamptonae sp. nov. and A. fimbriatus (Stebbing &amp; Robertson, 1891) both have the urosomite 3 posterodorsal margin lined with a setal fringe. Austrosyrrhoe hamptonae sp. nov. can be separated from A. fimbriatus and A. septentrionalis Stephensen, 1931 by the pereopods 5 and 6 bases being subovate in A. hamptonae sp. nov. and more subquadrate-rectilinear in the latter species.</p><p>Austrosyrrhoe rinconis J. L. Barnard, 1967 is reported from nearby Baja California (1095–1205 m), while the remaining four species are in the North Atlantic, South Atlantic, and South Pacific Ocean (Fig. 7). Austrosyrrhoe hamptonae sp. nov. has the coxa 3 anterior distal corner rounded while in A. rinconis the corner is acute.</p><p>Austrosyrrhoe hamptonae sp. nov., A. crassipes K. H. Barnard, 1925, and A. kathleenae Lörz &amp; Coleman, 2013 have a single serrate palm defining setae on gnathopods 1 and 2, while A. septentrionalis has gnathopods 1 and 2 with two setae defining the palm and in A. fimbriatus the palm-defining setae are simple.</p><p>A search of the NHM collection for the comparative type material of A. fimbriatus concluded the material is lost. Previous work by J. L. Barnard (1972) stated the type specimens of A. crassipes were in poor condition and beyond repair to properly diagnose the genus.</p><p>Prior to the current study, the deepest record of Austrosyrrhoe was A. septentrionalis at 2702 m near Greenland. The material of A. hamptonae from depths of 4352–5109 m in the Clarion-Clipperton Zone, Pacific Ocean increases this by more than 2409 meters.</p></div>	https://treatment.plazi.org/id/1F4E481E1F8359F894219465E3326823	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Hughes, Lauren Elizabeth;Tandberg, Anne Helene Solberg	Hughes, Lauren Elizabeth, Tandberg, Anne Helene Solberg (2026): Synopiidae Dana, 1853 (Crustacea, Amphipoda) of the Clarion-Clipperton Zone. ZooKeys 1274: 255-270, DOI: 10.3897/zookeys.1274.141366
D09A76EA781D55A5868010C5F1BA7238.text	D09A76EA781D55A5868010C5F1BA7238.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Syrrhoe manowitzae Hughes & Tandberg 2026	<div><p>Syrrhoe manowitzae sp. nov.</p><p>Figs 4, 5, 6, 7, 8</p><p>Type material.</p><p>Holotype: Pacific Ocean • 1 female, 20 mm; Clarion-Clipperton Zone; 11.604°N, 118.05°W; depth 4368 m; 31 May 2021; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-118.05&amp;materialsCitation.latitude=11.604" title="Search Plazi for locations around (long -118.05/lat 11.604)">NORI-D exploration contract area</a>, NORI-D 2 cruise MC_140, RV Maersk Launcher; multi-corer; NHMUK 2025.2873, COI (PZ 022426) . Paratypes: Pacific Ocean • female, 19 mm; Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-116.55&amp;materialsCitation.latitude=12.367" title="Search Plazi for locations around (long -116.55/lat 12.367)">UKSR- 1 exploration contract area</a>, R/V Thompson, ABYSSLINE- 2, EBS, AB 2 - EB 01, 18 Feb. 2015, 12°22.02'N, 116°33.00'W, 4352 m, SMF 63361, COI: PQ 734459 • juvenile, 8 mm; Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-116.63&amp;materialsCitation.latitude=12.451" title="Search Plazi for locations around (long -116.63/lat 12.451)">UKSR- 1 exploration contract area</a>, R/V Thompson, ABYSSLINE- 2, EBS, AB 2 - EB 07, 02 Mar. 2015, 12°27.06'N, 116°37.80'W, 4145 m, SMF 63362, COI: PQ 734626 • juvenile, 6 mm; Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-116.29458&amp;materialsCitation.latitude=11.309075" title="Search Plazi for locations around (long -116.29458/lat 11.309075)">BGR exploration contract area</a>, R/V Kilo Moana, EBS, KM 23-50, 1 May 2023, 11°17.7919'N, 116°18.8626'W – 11°18.5445'N, 116°17.6747'W, 4185– 4182 m, SMF 63364, COI: PQ 734672 • juvenile, 5.5 mm; Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-116.29458&amp;materialsCitation.latitude=11.309075" title="Search Plazi for locations around (long -116.29458/lat 11.309075)">BGR exploration contract area</a>, R/V Kilo Moana, EBS, KM 23-50, 1 May 2023, 11°17.7919'N, 116°18.8626'W – 11°18.5445'N, 116°17.6747'W, 4185– 4182 m, SMF 63363 COI: PQ 734362</p><p>Other material.</p><p>Pacific Ocean • juvenile, 6 mm; Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-118.02085&amp;materialsCitation.latitude=11.618417" title="Search Plazi for locations around (long -118.02085/lat 11.618417)">BGR exploration contract area</a>, R/V Kilo Moana, EBS, KM 23-69, 4 May 2023, 11°36.252'N, 118°02.981'W – 11°37.1050'N, 118°01.2511'W, 4368– 4356 m, DSB_8423), COI: PQ 734342</p><p>Diagnosis.</p><p>Head protuberant. Pereonite 7 posterodistal margin minutely serrate with single acute dorsal tooth. Epimera 1–3 posterior margin smooth, posterodistal corner subquadrate. Telson length 2.5 times breadth, longer than uropod 3 peduncle, deeply cleft (90 % of telson depth), without setae along the lateral margin, with single pair of short robust apical setae.</p><p>Description.</p><p>Colour in life bright red, transitioning to lighter orange posteriorly.</p><p>Head (Figs 4, 5, 6) protuberant; rostrum short, directed ventrally, apically acute; lateral cephalic lobe absent; eyes pale pink / orange ommatidia in white matrix (not apparent in preserved material); accessory eyes absent. Antenna 1 peduncular article 1 not elongate, with an anterior distal tooth; peduncular article 2 not elongate; flagellum shorter than pereon. Antenna 2 flagellum 16 - articulate. Mandible palp article 2 with many slender setae; article 3 with many slender apical setae; lacinia mobilis tri-dentate; molar greatly enlarged, smooth, not triturative; right accessory setal row with five serrate setae; left accessory setal row with seven serrate setae. Maxilla 1 inner plate unknown, outer plate with ten robust setae, palp article 2 lined with medial and apical slender setae. Maxilliped not foliaceous.</p><p>Pereon (Figs 4, 5, 7). Pereonites 1–6 dorsal margin smooth, without lateral ridge. Pereonite 7 posterodistal margin minutely serrate with single acute dorsal tooth. Gnathopod 1 subchelate; coxa anterior margin not produced, not tapering distally; basis longer than carpus; propodus palm nearly transverse, defined by a serrate robust seta. Gnathopod 2 subchelate; coxa not distally tapering; basis longer than carpus; propodus palm nearly transverse, defined by a serrate robust seta; dactylus well developed. Pereopod 3 coxa anterodistal lobe produced and subacute, posterodistal lobe margin smooth, truncate, depth 1 / 2 of coxa. Pereopod 4 coxa smaller than coxa 3, lobate in shape, with weakly developed posteroventral lobe. Pereopods 5–7 basis subovoid, expanded, posterodistal lobe not extending below ischium, anterodistal corner rounded, posterior margin broadly serrate.</p><p>Pleon (Figs 5, 6). Pleonites 1–3 posterodistal margin minutely serrate, with single acute dorsal tooth, without lateral ridges. Epimera 1–3 posterior margin smooth, posterodistal corner subquadrate. Uropod 3 length exceeding uropods 1 and 2; peduncle short, length twice breadth. Telson length 2.5 times breadth, longer than uropod 3 peduncle, deeply cleft (90 % of telson depth), without setae along the lateral margin, with single pair of short robust apical setae.</p><p>Etymology.</p><p>Named for Naomi Manowitz, who illustrated amphipods from the north eastern Pacific offshore of the Columbia River, Oregon, in the 1970 s publications of Jerry Barnard.</p><p>Molecular identification.</p><p>Following the definition given by Pleijel et al. (2008), the sequence of the holotype male of S. manowitzae sp. nov. (NHMUK 2025.2873, GenBank accession number PZ 022426) is designated as a hologenophore of all obtained sequences. The sequences of the paratypes and non-type collection of the species are deposited in GenBank with the following accession numbers: PQ 734342, PQ 734362, PQ 734459, PQ 734626, PQ 734672. The species has also received a Barcode Index Number from Barcode of Life Data Systems: BOLD: AEA 8314 (https://doi.org/10.5883/BOLD:AEA8314).</p><p>Remarks.</p><p>The protuberant head of Syrrhoe manowitzae sp. nov. aligns it with three other Syrrhoe species, namely S. oluta J. L. Barnard, 1972, S. papyracea Stebbing, 1888, and S. longifrons Shoemaker, 1964 . Syrrhoe manowitzae sp. nov. is most closely related to S. oluta and S. longifrons based on the long, deeply cleft telson. Syrrhoe manowitzae sp. nov. has a tooth flanked by serrations on pleonite 7 and pleonites 1 and 2, which separates it from S. oluta and S. longifrons that have smooth dorsal margins across all posterior somites (pereonite 7, pleonites 1 and 2). Eyes sizes also differ with S. manowitzae sp. nov. having much smaller compound eyes in comparison to S. longifrons in where the eyes are very large (Fig. 4).</p><p>The single dorsal tooth with minute lateral serrations (pereonite 7, pleonites 1 and 2) on S. manowitzae sp. nov. is similar to S. serrima J. L. Barnard, 1972 (5.8 mm, Argentina); these species differ in the epimera 3 posterior margin which is smooth in S. manowitzae sp. nov. and serrate in S. serrima .</p><p>Syrrhoe manowitzae sp. nov. individuals were recorded from similar depths despite the significant difference in size of individuals: 4185–4368 m depth and 5.5–20 mm in body size.</p></div>	https://treatment.plazi.org/id/D09A76EA781D55A5868010C5F1BA7238	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Pensoft via Plazi	Hughes, Lauren Elizabeth;Tandberg, Anne Helene Solberg	Hughes, Lauren Elizabeth, Tandberg, Anne Helene Solberg (2026): Synopiidae Dana, 1853 (Crustacea, Amphipoda) of the Clarion-Clipperton Zone. ZooKeys 1274: 255-270, DOI: 10.3897/zookeys.1274.141366
