identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
D370F8C0950655BABE513FABEBF1526C.text	D370F8C0950655BABE513FABEBF1526C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Alexandrella Chevreux 1911	<div><p>Genus Alexandrella Chevreux, 1911</p><p>Alexandrella Chevreux, 1911: 1167 — Chevreux 1912: 213; Chevreux 1913: 134; Holman and Watling 1983: 32; J. L. Barnard and Karaman 1991: 703; d’Udekem d’Acoz and Verheye 2017: 166 (see for an extensive synonym list).</p><p>Generic remarks.</p><p>The genus Alexandrella is thoroughly treated taxonomically by d’Udekem d’Acoz and Verheye (2017), who synonymised Bathypanoploea Shellenberg, 1939 and Astyroides Birstein &amp; Vinogradova, 1960 with Alexandrella and include four still undescribed Antarctic species of Alexandrella in a key to all Antarctic and sub-Antarctic Alexandrella . These decisions were based on a combination of morphology and genetic information, and they gave no new formal diagnosis to the genus, but rather they still leant on the diagnosis from Barnard (1969). Recently, Souza-Filho et al. (2024) described a deep-sea Alexandrella from northeastern Brazil, and this is the only addition since d’Udekem d’Acoz and Verheye (2017). See Souza-Filho et al. (2024) for a diagnosis of the genus.</p></div>	https://treatment.plazi.org/id/D370F8C0950655BABE513FABEBF1526C	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	Tandberg, Anne Helene S.;Hughes, Lauren E.	Tandberg, Anne Helene S., Hughes, Lauren E. (2026): Stilipedidae Holmes, 1908 (Crustacea, Amphipoda) of the Clarion-Clipperton Zone. ZooKeys 1274: 17-34, DOI: 10.3897/zookeys.1274.141416
0E7519DF8E81585D91CD43B0302D8879.text	0E7519DF8E81585D91CD43B0302D8879.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Alexandrella haubeni Tandberg & Hughes 2026	<div><p>Alexandrella haubeni sp. nov.</p><p>Figs 2, 3, 4, 5</p><p>Etymology.</p><p>Named for Lawrence Hauben, who illustrated amphipods of the North-eastern Pacific off California in the 1960 s for Jerry Barnard.</p><p>Type material.</p><p>Holotype: Pacific Ocean • SMF 63340; 1 ♂, 3 mm; Clarion-Clipperton Zone; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.005&amp;materialsCitation.latitude=11.828" title="Search Plazi for locations around (long -117.005/lat 11.828)">BGR exploration contract area</a>; R / V Kilo Moana, MANGAN 2016, EBS, Ma 16-28, 01 / 05 / 2016; 11.828, - 117.005; depth 4143 m; COI: PQ 734654.</p><p>Diagnosis.</p><p>Labrum asymmetrically lobed. Mandibular incisors broad, irregularly toothed, right lacinia mobilis toothed and not reduced. Gnathopods 1 and 2 parachelate. No dorsal carina or projections, marked dorsal bose on pereonite 1.</p><p>Description.</p><p>Head. Rostrum weakly developed, eyes unknown. Body smooth without dorsal projections. Antenna 1 peduncle article 1 subequal to articles 2 and 3 combined; flagellum with 10 segments; accessory flagellum, 1 - articulate, length 3 times breadth, with single apical setae. Antenna 2 (broken). Upper lip as long as broad, asymmetrically lobed, right lobe much larger than left. Mandible well developed, incisors broad, serrate; right lacinia mobilis broad, serrate; accessory setae row with 5 setae; molar present, raised conical, not triturative; palp 3 - articulate; article 2 longer than 3, with 2 distal setae; article 3 with marginal setal row and long apical setae. Lower lip lost in dissection. Maxilla 1 inner plate large, lined with 8 plumose setae; outer plate broad, with 8 cuspidate setal teeth; palp 1 - articulate (see also other authors illustrations), distally broad, length 1.5 times width, with 7 short, broad robust setae. Maxilla 2 inner plate 1.5 times width of outer plate, margin with long slender simple setae; outer plate margin with long slender plumose setae. Maxilliped inner plate without setae; outer plate broad, margins weakly convex, inner margin lined with 7 short robust setae increasing in length, outer margin lined with minute setules; palp 4 - articulate, short, length 0.66 times outer plate, with few setae; dactylus recurved with single medial tooth.</p><p>Pereon. Gnathopods 1 and 2 similar, parachelate. Gnathopod 1 coxa anterodistally produced, broadly rounded, coxa partially covering the head; carpus rectilinear, broader than propodus, length 1.8 times breadth; propodus posterior margin with a few long setae; dactylus 0.6 times length of the propodus, weakly recurved with unguis present. Gnathopod 2 coxa anterior and posterior margins straight, ventral margin rounded; carpus rectilinear, broader than propodus, posterodistally produced, length twice breadth; dactylus length 0.8 times propodus, weakly recurved with unguis present. Pereopods 3–4 similar in length. Pereopod 3 coxa margins parallel, ventral margin convex, length 2.5 times width. Pereopod 4 coxa posterior lobe acute. Pereopods 5–7 similar: coxae small as normal for genus, bases posteriorly convex with small acute posterior lobes, merus with parallel margins (all broken above carpus).</p><p>Pleon. Pleonites 1–3 without dorsal carina; epimera 1–3 unknown. Urosomite 1 with dorsal bose (a deep excavation medially), without carina. Urosomites 2 and 3 dorsally smooth, without carina. Uropod 1 subequal to uropod 2; biramous, rami subequal. Uropod 2 inner ramus length 0.6 times of outer ramus. Uropod 3 peduncle short, broader than long; rami subequal (one ramus broken in dissection and not drawn). Telson as long as broad, lobes apically convex, cleft 0.25 times length, with pair of subapical setules.</p><p>Remarks.</p><p>Alexandrella haubeni sp. nov. is most similar to Alexandrella subchelata Holman &amp; Watling, 1983 and Alexandrella setosa Serejo, 2014 with both the gnathopods 1 and 2 subchelate to parachelate, as all other Alexandrella have the gnathopods 1 and 2 simple. Alexandrella haubeni sp. nov. is distinguished by the lack of carina on the dorsal body margin and having only 7 robust setae on the maxilla 1 palp, while both A. subchelata and A. setosa have carinae present on the pleonites and urosome and more than 20 robust setae on the maxilla 1 palp.</p><p>Molecular identification.</p><p>The species has received a Barcode Index Number from Barcode of Life Data Systems: BOLD: AEA 9764 (https://doi.org/10.5883/BOLD:AEA9764).</p></div>	https://treatment.plazi.org/id/0E7519DF8E81585D91CD43B0302D8879	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	Tandberg, Anne Helene S.;Hughes, Lauren E.	Tandberg, Anne Helene S., Hughes, Lauren E. (2026): Stilipedidae Holmes, 1908 (Crustacea, Amphipoda) of the Clarion-Clipperton Zone. ZooKeys 1274: 17-34, DOI: 10.3897/zookeys.1274.141416
5CA98D468D455096B6F6EEEFA5E0EAF5.text	5CA98D468D455096B6F6EEEFA5E0EAF5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Astyra Boeck 1871	<div><p>Genus Astyra Boek, 1871</p><p>Astyra Boeck, 1871: 53 — Andres 1997: 81; d’Udekem d’Acoz and Verheye 2017: 178.</p><p>Generic remarks.</p><p>Andres (1997) discussed the taxonomy of the subfamily Astyrinae, and d’Udekem d’Acoz and Verheye (2017) also gave a taxonomic overview of the genus. A diagnosis is found in Barnard and Karaman (1991) and was discussed and updated by Andres (1997). The subfamily Astyrinae (Pirlot, 1934) was previously classified as the family Astyridae (Pirlot 1934; Coleman and Barnard 1991; Berge and Vader 2005) and then as a subfamily of Stilipedidae (Holman and Watling 1987; Barnard and Karaman 1991), which is the curently accepted classification containing the genera Astyra and Eclysis (Horton et al. 2024) .</p></div>	https://treatment.plazi.org/id/5CA98D468D455096B6F6EEEFA5E0EAF5	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	Tandberg, Anne Helene S.;Hughes, Lauren E.	Tandberg, Anne Helene S., Hughes, Lauren E. (2026): Stilipedidae Holmes, 1908 (Crustacea, Amphipoda) of the Clarion-Clipperton Zone. ZooKeys 1274: 17-34, DOI: 10.3897/zookeys.1274.141416
3EF5662386965D949A9ABD946B779A92.text	3EF5662386965D949A9ABD946B779A92.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Astyra mclaughlinae Tandberg & Hughes 2026	<div><p>Astyra mclaughlinae sp. nov.</p><p>Figs 6, 7, 8, 9</p><p>Etymology.</p><p>Named for Mrs D. McLaughlin who illustrated amphipods of the North-eastern Pacific off California in the 1960 s for Jerry Barnard.</p><p>Type material.</p><p>Holotype: Pacific Ocean • SMF 63341; 1 ♀, 4 mm; Clarion-Clipperton Zone; UKSR- 1 exploration contract area, R / V Thompson, ABYSSLINE- 2, EBS, AB 2 - EB 01, 18 / 02 / 2015; 12.367, -116.55; depth 4209 m; COI: PQ 734740.</p><p>Diagnosis.</p><p>Rostrum short, antenna 1 medium length (as long as head and first 5 pereonites combined). Strongly elevated ridge on outer face of bases of P 5 and P 6 (not on P 7). Mandible molar scullcap-like, mandible molar article 2 slightly longer than article 3.</p><p>Description.</p><p>Head shorter than pereonites 1 and 2 together; rostrum weakly developed, lateral cephalic lobe subacute; eyes unknown. Body smooth without projections on dorsal margin. Antenna 1 peduncle article 1 subequal to articles 2 and 3 combined; flagellum with more than 26 articles; accessory flagellum 1 - articulate (width not observable). Antenna 2 length subequal to antennae 1, flagellum with more than 49 articles. Upper lip lost in dissection. Mandible well developed, incisors broad, serrate; right lacinia mobilis broad, serrate with 5 serrations, accessory setae row with 9 setae; molar a slightly rised curve (scullcap-like); mandibular palp 3 - articulate; article 2 longer than 3, with margin with few setae; article 3 with marginal setal row and long apical setae. Lower lip inner margin sinusoidal, lined with rows of setae. Maxilla 1 inner plate well developed, lined with 6 plumose setae; outer plate broad, with 11 cuspidate setal teeth; palp 2 - articulate, distally broad, length 2.1 times width, with 5 short, broad robust setae. Maxilla 2 inner plate 0.7 times width of outer plate, margin with 2 rows of plumose setae; outer plate margin with long slender plumose setae. Maxilliped inner plate with apical and lateral setae; outer plate broad with sparse facial setules, inner margin straight, lined with 9 short robust setae slightly increasing in length distally, outer margin weakly convex and smooth; palp 4 - articulate, long, length 1.4 times outer plate, with few setae; dactylus slightly recurved with 5 medial teeth.</p><p>Pereon. Gnathopod 1 and 2 similar, subchelate, gnathopod 2 slightly larger than gnathopod 1. Gnathopod 1 coxa anterodistally produced, broadly rounded; carpus subtriangular, broader than propodus, length 1.8 times width; propodus posterior margin with rows of plumose setae, palm subacute, minutely serrate, defined by four robust setae; dactylus length 0.4 times propodus, weakly recurved, unguis present, posterior margin with 8 teeth. Gnathopod 2 coxa anterior margin straight, ventrally rounded; carpus rectilinear, broader than propodus, posterodistally produced, length 1.7 times width; propodus posterior margin with rows of plumose setae, palm subacute, minutely serrate, define by 5 robust setae; dactylus length 0.4 propodus, weakly recurved, unguis present, margin with 8 teeth. Pereopods 3–4 broken. Pereopod 3 coxa margins subparallel, ventral margin convex and slightly prodced ventrally, length 2.2 times width. Pereopod 4 coxa posterior lobe acute. Pereopods 5–6 similar in shape of basis, both with a strong elevated ridge on the outer face of the bases, anterior and posterior margins slightly curved, but paralell, very small posterior lobe. The basis of pereopod 7 does not have an elevated ridge, posterior margin strait, wide and square posterior lobe. (Pereopods 5–7 were broken distally).</p><p>Pleon. Pleonites 1–3 without dorsal carina; epimera 1 posteriorly rounded; epimera 2 and 3 posteriorly subquadrate. Urosomite 1–3 without dorsal bose or carina. Uropod 1 subequal to uropod 2; biramous, rami subequal. Uropod 2 biramous, rami subequal. Uropod 3 peduncle short, almost as broad as long; inner ramus length 0.8 times outer ramus. Telson slightly longer than broad, lobes apically subacute, cleft 0.66 times length, without apical setules.</p><p>Remarks.</p><p>Astyra mclaughlinae sp. nov. is most smimilar to the cold-water species Astyra abyssi Boeck, 1871 (Boreal – North Atlantic) and Astyra antarctica Andres, 1997 (Antarctic – Weddell Sea), who both have mandibular palp article 3 slightly shorter than article 2, and the ornamentation of the outer plate of the maxilliped but differs from both these species in the longer maxilliped palp. Astyra mclaughlinae is distinguished from A. antarctica by its elevated ridges on the bases of pereopods 5 and 6, and from A. abyssi by not having an elevated ridge on the basis of pereopod 7. Astyra mclaughlinae has a mandibular molar that is close to the molar of A. antarctica, also distinguishing it from all other Astyrinae .</p><p>Molecular identification.</p><p>The species has received a Barcode Index Number from Barcode of Life Data Systems: BOLD: AEA 9765 (https://doi.org/10.5883/BOLD:AEA9765).</p></div>	https://treatment.plazi.org/id/3EF5662386965D949A9ABD946B779A92	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	Tandberg, Anne Helene S.;Hughes, Lauren E.	Tandberg, Anne Helene S., Hughes, Lauren E. (2026): Stilipedidae Holmes, 1908 (Crustacea, Amphipoda) of the Clarion-Clipperton Zone. ZooKeys 1274: 17-34, DOI: 10.3897/zookeys.1274.141416
