identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
7C968020FEFE5B3881B087FEC96DBA2D.text	7C968020FEFE5B3881B087FEC96DBA2D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Eperopeus Mills 1967	<div><p>Genus Eperopeus Mills, 1967</p><p>Eperopeus Mills, 1967: 351. ― Karaman 1974: 10; Barnard and Karaman 1991: 576; Biswas et al. 2009: 24 (in key); Paz-Rios and Pech 2022: 2.</p><p>Type species.</p><p>Eperopeus abyssicola Mills, 1967 (original designation).</p><p>Diagnosis.</p><p>Head lacking rostrum. Antennae short, equal in length or antenna 2 slightly longer than antenna 1. Coxae all very shallow, subovate or subquadrate. Gnathopods 1 and 2 carposubchelate; carpus elongate, broad medially; propodus short, not expanded; palm lacking. Mandible, incisor toothed; palp article 2 expanded. Maxilla 1, palp article 2 expanded distally. Maxilliped, inner plate small, narrow; palp longer than inner edge of outer plate. Pereopods 5 and 6 with long slender dactyls. No dorsal processes on urosome in either sex. Uropods 1 and 2 rami without setae. Uropod 3 short, outer ramus two-articulate. Telson entire. (Amended after Mills 1967).</p><p>Remarks.</p><p>The genus Eperopeus was erected for the single species, E. abyssicola, which was described from the western North Atlantic Ocean, near Bermuda, between 2500–4977 m (Mills 1967). The genus Eperopeus is unique among the Pardaliscidae in possession of an entire telson and carposubchelate gnathopods 1–2.</p><p>The recently described genus Paraeperopeus Paz-Rios &amp; Pech, 2022 has similar gnathopods, with the carpus longer than the propodus and broadened medially, but differs in having a long, distinct rostrum (lacking in Eperopeus), setose ventral margins of coxae 1–4, and a slightly emarginate telson.</p><p>Eperopeus also shares the characteristic gnathopods with Necochea Barnard, 1962, Pardaliscoides Stebbing, 1888, and Princaxelia Dahl, 1959, from which it is distinguished by numerous morphological characters in addition to the entire telson. The only other genus with an entire telson is Parpano Barnard, 1964 (Caribbean Sea), from which Eperopeus can be distinguished by, among many other characters, the broadened carpus of gnathopods 1–2 (carpus is strongly shortened in Parpano), very shallow coxae (deep in Parpano), and stout mandibular palp (slender in Parpano).</p><p>Species.</p><p>Eperopeus abyssicola Mills, 1967; Eperopeus vermiculatus sp. nov.</p></div>	https://treatment.plazi.org/id/7C968020FEFE5B3881B087FEC96DBA2D	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	Horton, Tammy;Valls Domedel, Georgina;Stewart, Eva C. D.;Hendrycks, Ed A.	Horton, Tammy, Valls Domedel, Georgina, Stewart, Eva C. D., Hendrycks, Ed A. (2026): Description of a new species of the genus Eperopeus Mills, 1967 (Crustacea, Amphipoda, Pardaliscidae) from the Clarion-Clipperton Zone, Central Pacific Ocean. ZooKeys 1274: 201-213, DOI: 10.3897/zookeys.1274.139483
0C97B46295855C3896891219F56C5CBD.text	0C97B46295855C3896891219F56C5CBD.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Eperopeus vermiculatus Horton & Valls Domedel & Stewart & Hendrycks 2026	<div><p>Eperopeus vermiculatus sp. nov.</p><p>Figs 1, 2, 3, 4, 5</p><p>Type material.</p><p>Holotype: Pacific • female (with setose oostegites), 3.6 mm (13 slides); Clarion-Clipperton Zone; 10.3773°N, 117.1558°W; depth 4302 m; 14 / 05 / 2021; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.1558&amp;materialsCitation.latitude=10.3773" title="Search Plazi for locations around (long -117.1558/lat 10.3773)">NORI-D contract area</a>, RV Maersk Launcher, Cruise C 5 D, Station STM_168, Box Core BC_395; NHMUK 2025.28 (Specimen 7249_TH_AMP_1), 16 S (PV 075086) . Paratypes: Pacific • female (without oostegites), 2.9 mm; Clarion-Clipperton Zone; 10.8397°N, 116.1504°W; depth 4132 m; 25 / 05 / 2021; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-116.1504&amp;materialsCitation.latitude=10.8397" title="Search Plazi for locations around (long -116.1504/lat 10.8397)">NORI-D contract area</a>, RV Maersk Launcher, Cruise C 5 D, Station SPR_160, Box Core BC_412; NHMUK 2025.29 (Specimen 8233_TH_AMP_1) • female (with setose oostegites), 4.1 mm; Clarion-Clipperton Zone; 10.3315°N, 117.1872°W; depth 4284 m; 28 / 05 / 2021; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.1872&amp;materialsCitation.latitude=10.3315" title="Search Plazi for locations around (long -117.1872/lat 10.3315)">NORI-D contract area</a>, RV Maersk Launcher, Cruise 5 D, Station STM_195, Box Core BC_415; NHMUK 2025.30 (Specimen 8571_TH_AMP2), 16 S (PV 075086), 28 S (PV 075089) • female (without oostegites), 2.9 mm; Clarion-Clipperton Zone; 10.3559°N, 117.1688°W; depth 4277 m; 11 / 11 / 2020; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.1688&amp;materialsCitation.latitude=10.3559" title="Search Plazi for locations around (long -117.1688/lat 10.3559)">NORI-D contract area</a>, RV Maersk Launcher, Cruise 5 A, Station STM_010, Box Core BC_355; NHMUK 2025.31 (specimen 8803 _ TH _ AMP 1) • Male (with expanded callynophore), 4.3 mm; Clarion-Clipperton Zone; 10.3336°N, 117.186°W; depth 4279 m; 02 / 12 / 2022; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.186&amp;materialsCitation.latitude=10.3336" title="Search Plazi for locations around (long -117.186/lat 10.3336)">NORI-D contract area</a>, MV Island Pride, Cruise 7 B, Station TF_007 _ 01, Box Core BC_478; NHMUK 2025.32 (specimen 10333_TH_AMP_1), COI (PV 077102), 16 S (PV 075087), 28 S (PV 075090), H 3 (PV 078005) .</p><p>Other material.</p><p>Pacific • female, 4.0 mm; Clarion-Clipperton Zone; 10.3773°N, 117.1558°W; depth 4302 m; 14 / 05 / 2021; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.1558&amp;materialsCitation.latitude=10.3773" title="Search Plazi for locations around (long -117.1558/lat 10.3773)">NORI-D contract area</a>, RV Maersk Launcher, Cruise C 5 D, Station STM_168, Box Core BC_395; DISCOLL -TMC-AMP-7251-a (specimen 7251_TH_AMP 1) • female (no obvious oostegites), 2.3 mm; Clarion-Clipperton Zone; 10.3553°N, 117.169°W; depth 4274; 09 / 09 / 2022; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.169&amp;materialsCitation.latitude=10.3553" title="Search Plazi for locations around (long -117.169/lat 10.3553)">NORI-D contract area</a>, MV Island Pride, Cruise 7 A, STM_010, Box Core BC_337; DISCOLL -TMC-AMP-9393-a (specimen 9393_TH_AMP_1) • female, 3.1 mm; Clarion-Clipperton Zone; 10.3281°N, 117.1817°W; depth 4286 m; 24 / 11 / 2023; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.1817&amp;materialsCitation.latitude=10.3281" title="Search Plazi for locations around (long -117.1817/lat 10.3281)">NORI-D contract area</a>, MV Coco, Cruise 8 A, Station IM 013 _ BCR 2, Box Core BC 487; DISCOLL -TMC-AMP-12535-a (specimen 12535_TH_AMP_1), COI (PV 077103), 16 S (PV 075088) • female (with oostegites), 4.5 mm; Clarion-Clipperton Zone; 10.3541°N, 117.2424°W; depth 4290 m; 13 / 12 / 2023; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.2424&amp;materialsCitation.latitude=10.3541" title="Search Plazi for locations around (long -117.2424/lat 10.3541)">NORI-D contract area</a>, MV Coco, Cruise 8 A, Station IM 003 _ BC, Box Core BC 501; CMNC 2025-0001 (specimen 12548_TH_AMP_3) • male; not measured, Clarion-Clipperton Zone; 11.892°N, 117.489°W; depth 4193–4256 m; 10 / 05 / 2016; <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-117.489&amp;materialsCitation.latitude=11.892" title="Search Plazi for locations around (long -117.489/lat 11.892)">BGR contract area</a>, RV Kilo Moana, Cruise MANGAN 16, Station SO 262-96, Epibenthic Sledge; DSB_3704, COI (PQ 734521) .</p><p>Type locality.</p><p>Abyssal Pacific Ocean, Clarion-Clipperton Zone, 10.3773°N, 117.1558°W; depth 4302 m.</p><p>Diagnosis.</p><p>Gnathopod dactyls inner margin lacking teeth; gnathopod 2 carpus narrower than that of gnathopod 1; pereopods 3–4 dactyls short, length 0.8–0.9 × respective propodus; pereopods 5–6 dactyls length 1.2 × propodus; mandibular palp article 1 elongated, 0.9 × length of article 2; maxilla 1 palp article 2 widened; uropod 1 rami length 0.8 × peduncle; telson longer than wide, bluntly rounded distally, length 1.1 × width.</p><p>Description.</p><p>Based on holotype female with setose oostegites, 3.6 mm, NHMUK 2025.28.</p><p>Body (Figs 1, 2): vermiform, pereonites and pleonites subequal or longer than deep. Pleonite 1, 2 (Fig. 2) smooth, lacking dorsal teeth. Urosomite 1 (Fig. 2) smooth, lacking dorsal teeth. Epimeron 1 (Fig. 2) with a rounded posterodistal corner and a small seta. Epimeron 2, 3 (Fig. 2) subquadrate, anterodistal corner broadly rounded, distal margin convex, posterodistal corner not produced, posterior margin straight. Coxae 1 – 7 (Fig. 2) reduced and shallow, much shorter than corresponding pereonites.</p><p>Head (Fig. 2): shorter in length than pereonites 1–2 combined; rostrum not obvious. Lateral cephalic lobe broadly triangular. Eye not apparent in preserved specimens. Antenna 1 very short, length 0.17 × body, geniculate; peduncular article 1 length 1.8 × width, angled on lateral margin so inner margin is longer; peduncular articles 2–3 short, length less than peduncle 1; flagellum five-articulate, first article of flagellum not callynophorate, each article with a large aesthetasc; accessory flagellum short, two-articulate, first article slightly broader. Antenna 2 slightly longer than antenna 1, gland cone small; peduncular articles 4–5 subequal, very weakly spinose and setose; flagellum five-articulate.</p><p>Mouthparts (Figs 2, 3): Epistome (Fig. 2) level with and scarcely differentiated from upper lip. Mandible (Fig. 3) incisor weakly dentate; left lacinia mobilis three-dentate; accessory spine row with four setae; molar absent; palp strong, article 1 elongate, length 2.36 × width and 0.9 × length of article 2, article 2 slightly shorter than article 3, not expanded, with one distal seta, article 3 cylindrical, subacute distally, with four strong setae; right mandible incisor four-dentate, teeth large, accessory spine row with one spine and fine setae. Lower lip (Fig. 3) outer lobe broad, mandibular lobe narrow. Maxilla 1 (Fig. 3) inner plate missing; outer plate with four strong teeth; palp two-articulate, article 2 strongly widened distally, with six nodular setae. Maxilla 2 (Fig. 3) slightly reduced, inner plate slightly shorter and broader than outer, tapering distally, both with long pappose apical setae. Maxilliped (Fig. 3) inner plate reduced, distal margin with two long setae; outer plate subovate, reaching distomedial end of palp article 1, with two apical and three medial setae, medial margin straight; palp short, weakly setose medially, articles 1–2 slightly expanded, article 3 narrow, article 4 long, length 0.8 × article 3.</p><p>Pereon (Figs 2, 4): Gnathopod 1 (Fig. 2) carposubchelate; coxa narrow, length 2.5 × width, anterodorsal corner rounded, posterior margin nearly straight, distal margin straight; basis short, strongly expanded, length 1.3 × width; ischium shorter than merus; carpus broad, length 1.6 × width, posterior margin with five strong pectinate setae; propodus narrow and curved, length 0.64 × carpus, posterior margin with two strong pectinate setae, lacking palm; dactylus narrow, inner margin lacking teeth. Gnathopod 2 (Fig. 2) carposubchelate; coxa subrectangular, length 1.7 × width, anterodorsal corner rounded, posterior margin convex, distal margin straight; basis short, expanded, length 2.1 × width: ischium shorter than merus; remaining articles as in gnathopod 1 except carpus narrower, length 2.4 × width. Pereopod 3 (Fig. 4) coxa crescent-shaped, shallow, length 2.3 × width, ventral margin convex; merus widening distally, triangular, slightly shorter than carpus; carpus dilated, ovate, posterior margin with two long pectinate setae; propodus subequal in length to carpus, anterodistal corner acute; dactylus straight, length 0.8 × propodus. Pereopod 4 (Fig. 4) similar to pereopod 3 except coxa longer; merus slightly narrower; carpus narrow and dactylus longer, length 0.9 × propodus. Pereopod 5 (Fig. 4) coxa narrow, length twice width, anterodistal and posterodistal margins rounded; basis narrow, length 3.2 × width, anterior and posterior margins slightly convex; merus length 0.7 × carpus-propodus; carpus, posterodistal corner with two spines; propodus narrow, longer than carpus, posterodistal corner acute with spine; dactylus straight, length 1.2 × propodus. Pereopod 6 (Fig. 4) coxa narrowly ovate, length 2.9 × width; basis narrow, length 3 × width, anterior margin strongly convex, posterior margin slightly concave; rest of pereopod articles as in pereopod 5. Pereopod 7 (Fig. 4) long, length 1.3 × pereopod 5–6; coxa small, narrowing posteriorly, margins round; basis narrow, length 2.8 × width, anterior margin convex proximally, posterior margin straight; merus slightly shorter than carpus, with one posterodistal spine; carpus long, anterior margin with two spines, posterodistal corner with one spine; propodus long, length 1.2 × carpus, with two spines; dactylus partially missing.</p><p>Urosome: Uropod 1 (Fig. 5) peduncle length 1.36 × rami, dorsolateral corner with three or four small spines; rami lanceolate, equal in length, lacking spines. Uropod 2 (Fig. 5) Peduncle subequal in length to outer ramus, dorsomedial margin with one strong spine and seven very small spines; rami lanceolate, inner ramus longer than peduncle and outer ramus, margins microsetose, both lacking spines. Uropod 3 (Fig. 5) Peduncle short, length 0.65 × biarticulate outer ramus; outer ramus cylindrical, second article short, 0.26 × length of article 1; inner ramus slightly shorter than outer, strongly tapering with margin microsetose, with one apical seta. Telson (Fig. 5): Short, entire, length 1.1 × width, lateral margins with one submarginal seta, distal margin bluntly rounded, straight.</p><p>Oostegites (Fig. 4): present on pereopods 3–5, short, subrectangular with two or three medium length apical brood setae.</p><p>Gills (Fig. 4): present on pereopods 3–6. Subovate to cylindrical, shorter than basis.</p><p>Male: as for female except Antenna 1 (Fig. 2): peduncular article 1 length 2.2 × width; callynophore present. Accessory flagellum with a single flattened, broad, scale-like article, distal articles not apparent.</p><p>Etymology.</p><p>The species name, vermiculatus, is from the Latin, meaning “ like worms ” or “ of worms ”. It was chosen to honour both the vermiform morphology of this new amphipod, and in recognition of the World Register of Marine Species (WoRMS 2025), a wonderful resource for all marine taxonomists.</p><p>Remarks.</p><p>This is the second species of Eperopeus described and the first record of this rarely reported genus from the Pacific Ocean. A list of differences between the two species is provided in Table 2. These differences are minor but allow for the separation of the two species (for which a key is also provided).</p><p>Molecular identification.</p><p>The species has received a Barcode Index Number from Barcode of Life Data Systems: BOLD: AEB 4130 (https://doi.org/10.5883/BOLD:AEB4130).</p><p>Distribution.</p><p>Abyssal Pacific Ocean, Clarion-Clipperton Zone, 4132–4302 m.</p></div>	https://treatment.plazi.org/id/0C97B46295855C3896891219F56C5CBD	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	Horton, Tammy;Valls Domedel, Georgina;Stewart, Eva C. D.;Hendrycks, Ed A.	Horton, Tammy, Valls Domedel, Georgina, Stewart, Eva C. D., Hendrycks, Ed A. (2026): Description of a new species of the genus Eperopeus Mills, 1967 (Crustacea, Amphipoda, Pardaliscidae) from the Clarion-Clipperton Zone, Central Pacific Ocean. ZooKeys 1274: 201-213, DOI: 10.3897/zookeys.1274.139483
