identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
565387F3FF97E35E70C74E4912862B9D.text	565387F3FF97E35E70C74E4912862B9D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Metopa cristata Gurjanova 1955	<div><p>Metopa cristata Gurjanova, 1955</p><p>Metopa cristata Gurjanova 1955: 176 –78, fig 7–8 Metopa cristata Shoemaker 1964: 396 –97, fig 3</p><p>Type locality: east coast of Iturup Island, Kurile Islands. Sandy bottom, 207m. (Gurjanova, 1955) Material examined. Morphological examination: NMNH 96488, (Albatross st. 5037: 20 Oct. 1906, E of N. Honshu Isl, Japan, 42°02’ 40”N, 142°33’ 20”E, 640m (349 fathoms), ovigerous female, 6mm, same material as used in Shoemaker 1964</p><p>See figures 1, 2, 3 and 4.</p><p>Morphological description. Ovigerous female, 6mm.</p><p>Head (Fig. 1): epistome small and rounded, cephalic lobe rounded; eye 1/2 of head length, well defined. Antenna 1 (Fig. 2): long and slender, slightly more than half body length; flagellum 17-articulate, with minute setae on each article; no accessory flagellum observed. Antenna 2 (Fig. 2): slightly longer than A1; peduncle more than 3x flagellum; flagellum ca 10-articulate, each article with one minute seta. Mandible (Fig. 2): mandibular palp 2-articulate, circular in cross-section, apical article very small, long thin simple setae on both articles; incisor and lacinia mobilis both serrate and well developed; no molar. Maxilla 1 (Fig. 2): inner plate with one simple distal seta; outer plate with four cuspidate and one conate distal setae and 10 short and simple setae on inner margin; palp 1-articulate, reaching 1.5x length of outer plate, with three cuspidate setae and one tooth apically, four simple setae facially and a row of very short simple setae on inner margin. Maxilla 2 (Fig. 2): outer plate in normal position to and slightly longer than inner plate; both plates with several simple setae (outer with 14 and inner with six). Labrum (Fig. 2): rounded and smooth. Maxilliped (Fig. 2): long and slim; inner plates separate, with a row of short simple setae along distal edge; outer plate reduced, ischium rectangular; palp 4-articulate with several simple setae at inner edge of articles 1 and 2, article 3 with a thickly set "cushion" of setae at tip, article 4 with a single row of short setae along inner edge.</p><p>Pereon: smooth; pereonite 1 slightly shorter than the rest. Gnathopod 1 (Fig. 3): subchelate; coxa subquadrate; basis linear, a few simple setae distally; ischium subquadrate, with one long and one short simple distal seta; merus with posterodistal corner free and covered with a row of short and a series of longer simple setae; carpus subrectangular and inner side with long simple setae; propodus slightly shorter than carpus and slightly less broad, almost transverse palm with rounded palmar corner, a few long simple setae on frontal margin, palm distal margin with a row of short, simple setae; dactylus smooth, slightly longer than palm, curved slightly at tip. Gnathopod 2 (Fig. 3): coxa covering coxa 1, directed forwards; merus covering much of carpus, very few and short setae at venterodistal margin of both; propodus palm almost transverse, weakly oblique, coarsely crenulate with simple setae, small, sharp tooth at palmar corner, posterior margin straight, longer than palm; dactylus as long as palm, slightly curved, smooth. Pereopods 3 and 4 (Fig. 3): simple and slender; coxa 3 subrectangular, coxa 4 triangular, ventral margin rounded, dactyli simple. Pereopod 5 (Fig. 4): basis slender, with a posterodistal rounded "tongue" 3/4 length of ischium; meral lobe 1/3 of carpus, a row of very small conical setae at anterior margin of both carpus and propodus; dactylus simple. Pereopods 6 and 7 (Fig. 4): coxae small; basis posteriorly expanded; meral lobe 1/2 and more than 1/2 carpus, respectively, P6 propodus with very small conical setae, similar to P5, but on anterior and posterior margins, P7 propodus with a few at posterior margin; dactyli simple.</p><p>Urosome (Fig. 1): smooth. Epimeral plate 3 (Fig. 1): rounded. Uropod 1 (Fig. 4): longer than uropod 2; biramous; peduncle slightly longer than rami, rami subequal in length; inner ramus with three small setae, outer ramus with one small seta. Uropod 2 (Fig. 4): longer than uropod 3; biramous; peduncle slightly longer than rami, inner ramus longer than outer, inner ramus with five small setae, outer ramus with two. Uropod 3 (Fig. 4): uniramous; ramus with two articles, peduncle slightly longer than ramus; peduncle and ramus each with three small setae, rounded, with two pairs of small marginal robust setae. Telson (Fig. 4): rounded, tongue-like; two pairs of setules.</p><p>Male and female very similar (Shoemaker 1964)</p><p>Distribution: only known from the type locality (east coast of Iturup Isl, Kurile Islands - sandy bottom 207 m depth) and this Albatross-station (east of northern Honshu Isl, 640m depth).</p><p>Discussion: Shoemaker (1964) mentions a 3-articulate mandibular palp, with article 2 very long and article 3 very small. He also mentions four pairs of setules at telson. He further mentions several pereon segments protruding dorsally to a low carinae, which can vary in “truncateness” - we have clearly examined less truncate specimens.</p></div>	https://treatment.plazi.org/id/565387F3FF97E35E70C74E4912862B9D	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.		MagnoliaPress via Plazi	Tandberg, Anne Helene S.	Tandberg, Anne Helene S. (2009): A redescription of Metopa species (Amphipoda, Stenothoidae) based on the type material. 2. The United States National Museum of Natural History (NMNH). Zootaxa 2309: 43-68, DOI: 10.5281/zenodo.191826
565387F3FF90E35270C74BFA10FE2E7C.text	565387F3FF90E35270C74BFA10FE2E7C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Metopa dawsoni J.L. Barnard 1962	<div><p>Metopa dawsoni J.L. Barnard, 1962</p><p>Metopa dawsoni Barnard 1962: 139 –142, figs 10 and 11 Barnard 1964: 246</p><p>Type locality: Southern California (Barnard, 1962)</p><p>Material examined. Morphological examination: NMNH 106858-59, Southern California. Barnard No 6098. female, 5mm. 33°38’45”N, 118°14’45”W, 44,5m Feb1959. (from type locality, but not same lot as type, ID by JL Barnard)</p><p>See figures 5, 6 and 7.</p><p>Morphological description. Female, 5mm.</p><p>Head: epistome small and rounded, cephalic lobe rounded; eye 1/3 of head length, round and well defined. Antenna 1 (Fig. 5): long and slender, subequal to body length, peduncle article 2 longer than article 1, flagellum 13–15-articulate, minute thin and simple setules on each article; no accessory flagellum observed. Antenna 2 (Fig. 5): long and slender, slightly shorter than antenna 1; article 4 approximately as long as article 5, peduncle approximately 3x flagellum length; flagellum 8-articulate, each article with two minute simple setae. Mandible (Fig. 5): mandibular palp 3-articulate, article 1 short and article 3 minute; cross-section circular, long thin simple setae on two outer articles; lacinia mobilis and incisor well developed and serrate; no molar. Maxilla 1 (Fig. 5): inner plate with one distal simple seta; outer plate with four cuspidate, one conate and two simple setae and one smooth tooth apically, a row of simple setae along inner margin; palp 1- articulate, reaching 1.5x length of outer plate, with a series of serrate cuspidate teeth apically (sadly, this was not very well visible in the microscopic slide, and is missing in the illustration). Maxilla 2 (Fig. 5): outer plate in normal position to inner plate, slightly longer; both plates with simple setae apically: three on inner plate and 10 on outer. Maxilliped (Fig. 5): slender, inner plate partly divided, with one small simple seta apically on each lobe; outer plate a very small lobe reaching less than 1/5 length of palp article 1; palp 4-articulate, sparsely setose with a thin and short cushion at inner distal margin of article 3, article 4 with a dense row of thin short setae along inner margin.</p><p>Pereon: smooth. Gnathopod 1 (Fig. 6): simple; coxa subquadrate; basis linear with long simple setae along anterior margin; ischium subquadrate; merus distal margin not free, a cushion of short simple setae on distal margin and a few type A setae (Tandberg and Vader 2009) along apical margin; carpus long, a row of long simple setae along distal margin; propodus shorter and less broad than carpus, no palm, few long simple setae on distal margin; dactylus smooth, reaching 1/3 length of propodus, row of simple setae on distal margin. Gnathopod 2 (Fig. 6): coxa covering coxa 1, directed forwards, oval; merus long and thin; carpus with ridges along anterior margin, triangular, a row of type A setae along distal margin; propodus broader than carpus, palm nearly transverse, slightly oblique, nearly smooth, but with a sharp tooth at palmar corner, setae along palm, posterior margin straight, slightly longer than palm; dactylus as long as palm, smooth, weakly curved. Pereopods 3 and 4 (Fig. 6): simple and slender; coxa 3 subrectangular, coxa 4 triangular, ventral margin rounded, dactyli simple. Pereopod 5 (Fig. 7): basis slender; meral lobe 1/2 of carpus; dacylus reaching 1/2 length of propodus, simple; medium length simple setae along both margins of entire leg. Pereopods 6 and 7 (Fig. 7): stronger than P5; coxae small; bases posteriorly expanded; meral lobe nearly as long as or as long as carpus, respectively; dactyli reaching 1/2 length of propodus, smooth and with weakly crenulate anterior margin, respectively; medium length simple setae on both margins of both legs.</p><p>Urosome (Fig. 7): smooth. Epimeral plate 3 (Fig. 7): rectangular with rounded corner. Uropod 1 (Fig. 7): longer than uropod 2; biramous; peduncle longer than rami, rami subequal in length; peduncle one with short seta apically, inner ramus with two and outer ramus with three setae. Uropod 2 (Fig. 7): longer than uropod 3; biramous; peduncle slightly shorter than inner ramus; inner ramus longer than outer ramus; peduncle with three setae, rami each with two setae. Uropod 3 (Fig. 7): uniramous; ramus with two articles; peduncle shorter than ramus; peduncle and ramus each with two setae. Telson (Fig. 7): rounded, weakly boat-shaped, two robust setae on each side.</p><p>Ecology: lives at "medium depths” off south California/ Baja California from 12–185m, in greatest masses (appr. 1 specimen / m2) deeper than 50m. (Barnard 1964)</p><p>Distribution: only known from around the type locality (Barnard 1962) off Southern California: Pt Argüello, Baja Cristobál and Baja California.</p><p>Discussion: This species is very well described by Barnard. The main reason it is included here, in addition to giving a description of the mouthparts, which are not in Barnard’s description, is to make a complete redescription of all " type "/author-identified material of Metopa for a phylogenetic revision that is planned (Tandberg, Krapp-Schickel &amp; Vader, in prep). Barnard (1962) notes an accessory flagellum "forming a minute bump" in the diagnosis of the male, but nothing is observed on antennae in female. This accessory flagellum was not observed in this study. As the specimen described here is a female, the specific morphology of gnathopod 2 for males will have to be extracted from Barnard (1962), where it is stated as having pereopod margin weakly crenulate with a deep excavation, dactylus not as long as palm, and merus being produced anteriorly.</p><p>Barnard (1962) proposes it very close to Metopa wiesei Gurjanova 1933, from which it differs by the “angle of projection of the last tooth on the finger-hinge process of male gnathopod 2” and the relative lengths of the carpus and dactylus of gnathopod 1 ( M. dawsoni having a longer carpus and shorter dactylus than M. wiesei). It is also proposed to be close to Metopa alderi (Bate, 1857), but also from this species it differs by its long carpus of gnathopod 1, in addition to the “telsonic spines”. It is also separated from Metopa boeckii Sars, 1895 and Metopa robusta Sars, 1895 by the form of their gnathopods.</p></div>	https://treatment.plazi.org/id/565387F3FF90E35270C74BFA10FE2E7C	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.		MagnoliaPress via Plazi	Tandberg, Anne Helene S.	Tandberg, Anne Helene S. (2009): A redescription of Metopa species (Amphipoda, Stenothoidae) based on the type material. 2. The United States National Museum of Natural History (NMNH). Zootaxa 2309: 43-68, DOI: 10.5281/zenodo.191826
565387F3FF9CE35770C74EDB10B22809.text	565387F3FF9CE35770C74EDB10B22809.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Metopa majuscula Gurjanova 1948	<div><p>Metopa majuscula Gurjanova, 1948</p><p>Metopa majuscula Gurjanova 1948: 283, fig 2</p><p>Metopa majuscula Gurjanova 1951: 436 –37, figs 282, 283</p><p>Type locality: Japan Sea (Gurjanova, 1948)</p><p>Material examined. Morphological examination: Albatross station 5016-64. 1906 Sept 26, Okhotsk Sea, 46°44’30”N, 143°45’E. male, 6mm. ID by Shoemaker.</p><p>See figures 8, 9, 10 and 11.</p><p>Morphological description. Male, 6mm.</p><p>Head (Fig. 9): small and rounded, epistome weakly pointed; eyes approximately 1/3 head length, round, well defined. Antenna 1 (Fig. 9): long and slender; slightly shorter than body-length; peduncle articles 1 and 2 subequal length; flagellum 30-articulate, double length of peduncle; no accessory flagellum observed. Antenna 2 (Fig. 9): slender, much shorter than antenna 1; peduncle article 4 slightly longer than article 5; flagellum shorter than peduncle, 15-articulate, each with a short simple seta. Mandible (Fig. 9): palp 3- articulate, article 2 longest, article 3 small, cross-section circular; incisor serrate and well defined, lacinia mobilis well defined with deep incision in middle, serrate edge; no molar. Maxilla 1 (Fig. 9): inner plate small and squarish, one simple seta; outer plate with four cuspidate, one serrate and one conate seta and one tooth; palp slightly longer than outer plate, broad, 1-articulate, row of six cuspidate setae apically. Maxilla 2 (Fig. 9): outer plate in normal position to inner plate; inner plate with seven and outer plate with nine long and four shorter simple setae apically. Maxilliped (Fig. 9): long and slender; inner plates well separated, one conate and two simple setae apically; outer plate very small; palp 4-articulate, series of simple setae along inner margin, article 4 triangular in cross-section with short simple setae along inner margin.</p><p>Pereon (Fig. 8): smooth. Gnathopod 1 (Fig. 10): subchelate; coxa suboval, small; basis linear, ischium subquadrate; merus distally free, posterior margin cushioned with thick-set setae; carpus long and slender, long simple setae along posterior margin; propodus distally widened, palm transverse, palmar corner rounded, short simple setae on the smooth palm, long simple setae along posterior margin, which is 2x palm length; dactylus 3-dimensional (as in article 4 of mxp palp), row of short thick setae at inner margin, as long as palm. Gnathopod 2 (Fig. 10): coxa covering coxa 1, directed forwards, subrectangular; basis with "flat" front, triangular cross-section; ischium short and bare; merus triangular with few setae on posterior margin; carpus short, cup-shaped, with a strong row of type A setae along outer distal margin; propodus elongate and widened, basically subquadrate, palm transverse, convex, crenulate, ending in a strong tooth at palmar corner, few simple setae along palm, posterior margin almost 2x palm, near parallel with anterior margin; dactylus smooth, with a series of very short setae along inner margin, reaches to but not over palmar corner tooth. Pereopod 3 (Fig. 11): coxa suboval, slightly longer than coxa 2; rest of leg thin and elongate with linear basis, few and simple setae; dactylus simple, reaching 0.7x propodus. Pereopod 4 (Fig. 11): coxa triangulate; rest of leg simple, thicker than P3, few simple setae along margins; meral lobe reaching 0.5x carpus length; dactylus posterior margin crenulate, reaching 0.6x propodus. Pereopod 5 (Fig. 11): coxa small, somewhat extended posteriorly; basis slender, row of simple setae along posterior margin; meral lobe reaching 0.4x carpus; dactylus reaching 0.5x propodus, with small notch at distal anterior margin. Pereopods 6 and 7 (Fig. 11): coxae small; bases posteriorly expanded; meral lobe reaching 0.9x and 1.1x carpal length, respectively; dactyli with crenulate anterior margins, with an extra notch at distal ends, each reaching approximately 0.6x propodus length; few and simple setae along both legs margins.</p><p>Urosome (Fig. 10): smooth. Epimeral plate 3 (Fig. 10): rounded, margins at a sharp angle. Uropod 1 (Fig. 11): longer than uropod 2; biramous; peduncle slightly shorter than rami; rami subequal; rows of simple setae along both keels on peduncle and inner margins of rami. Uropod 2 (Fig. 11): longer than uropod 3; biramous; rami longer than peduncle, inner ramus longer than outer; few simple setae on propodus and rami. Uropod 3 (Fig. 11): uniramous; peduncle slightly shorter than ramus, ramus with two articles, inner article longer; peduncle with one short seta and ramus with four simple short setae on inner article. Telson (Fig. 11): rounded, flat; three pairs of short strong setae.</p><p>Ecology: there are no published data on the ecology.</p><p>Distribution: t his is known from Gurjanovas type location in the Japan Sea, in the Bering Sea (Gurjanova, 1951) and the Albatross-station in the Okhotsk-sea.</p></div>	https://treatment.plazi.org/id/565387F3FF9CE35770C74EDB10B22809	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.		MagnoliaPress via Plazi	Tandberg, Anne Helene S.	Tandberg, Anne Helene S. (2009): A redescription of Metopa species (Amphipoda, Stenothoidae) based on the type material. 2. The United States National Museum of Natural History (NMNH). Zootaxa 2309: 43-68, DOI: 10.5281/zenodo.191826
565387F3FF99E34B70C7486910072EE4.text	565387F3FF99E34B70C7486910072EE4.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Metopa spinicoxa Shoemaker 1955	<div><p>Metopa spinicoxa Shoemaker,1955</p><p>Metopa spinicoxa Shoemaker 1955: 20 –22, fig 6 g –o</p><p>Type locality: off Point Barrow, Alaska (Shoemaker, 1955)</p><p>Material examined. Morphological examination: NMNH 96250, Type. Male (6mm). "off Point Barrow base, Alaska. 175 feet (53m), 4 miles (6.5km) out, Oct 14, 1949 ".</p><p>See figures 12, 13 and 14.</p><p>Morphological description. Male, 6mm. (Type)</p><p>Head (Fig. 12): small; epistome pointed (Shoemaker says "prominent, projected forward and cleft in the center by a deep sinus"); eyes approximately 1/3 head length, round and well defined. Antenna 1 (Fig. 12): shorter than in the other species described here, reaching about 0.5x body length; peduncle article 1 barely longer than head; article 2 shorter than article 1; no accessory flagellum observed; flagellum subequal to peduncle, 14-articulate, each article with two simple short setae distally. Antenna 2 (Fig. 12): slightly longer than antenna 1; peduncle strong, 2.5x length of flagellum, article 4 longer than article 5; flagellum 10- articulate. Mandible (Fig. 12): mandibular palp 2-articulate, article 1 short and "round", article 2 long and slender with several simple setae; cross-section circular; incisor and lacinia mobilis serrate and well developed, a strong row of 10 raker setae; no molar. Maxilla 1 (Fig. 12): inner plate with one simple seta; outer plate with three serrate and one conate setae, one pointed tooth and two rows of simple setae along inner margin and along distal margin; palp 1-articulate, weakly serrate with one short and one long simple seta for each serration, small tooth at apex, 2x length of outer plate. Maxilla 2 (Fig. 12): outer plate somewhat at normal position to inner plate, inner plate shortened, inner plate with one type A seta and five simple setae, outer plate with nine simple setae. Labrum (Fig. 12): rounded; bilobate; weakly asymmetrical. Maxilliped (Fig. 12): long and slim; inner plate well separated, several short simple setae at distal margin; outer plate short and thin, reaching 1/4 of palp article 1; palp 4-articulate, several simple setae along inner margin, few very thin simple setae along outer margin; article 3 with a thin cushion of short setae at distal margin and three type A setae, article 4 3-dimensional, thick row of short setae along the inner "flat" margin.</p><p>Pereon: smooth. Gnathopod 1 (Fig. 13): simple; coxa subquadrate; basis linear and naked; ischium subquadrate; merus distal margin nearly free, a cushion of simple setae along distal posterior margin, and six simple longer setae apically; carpus long and rectangular, a row of long simple setae on posterior margin; propodus slightly longer and thinner than carpus, narrowing at distal end, no palm, few long simple setae along straight posterior margin; dactylus reaching approximately 0.5x propodus, simple but strong, a row of strong short setae along inner/posterior margin, very weakly curved. Gnathopod 2: missing on type. Pereopod 3 (Fig. 13): long and slender; coxa subrectangular, short simple setae along posterior distal margin; rest of leg simple with few but strong simple setae sparsely spread along posterior margins of merus, carpus and propodus; dactylus reaching 0.5x propodus, simple, curved at distal margin, naked. Pereopod 4 (Fig. 13): coxa subtriangular, ventral margin rounded; rest of leg slender, double sets of strong setae along posterior margins of carpus and propodus; dactylus naked and simple, curved, reaching 0.5x propodus length. Pereopod 5 (Fig. 14): coxa small and weakly elongated posteriorly; basis slender; meral lobe reaching 0.5x carpus; dactylus reaching 0.7x propodus, naked and weakly curved; merus to propodus with double set of strong simple setae at anterior margin, merus with simple setae also at posterior margin. Pereopods 6 and 7 (Fig. 14): coxae small; basis posteriorly expanded, short strong setae along posterior margin; meral lobe as long as carpus on both legs, double sets of short simple setae along both margins; dactyli approximately 0.6–0.7 x propodus length, simple and smooth, weakly curved.</p><p>Urosome (Fig. 14): smooth. Epimeral plate 3 (Fig. 14): rounded, margins at right angles to each other. Uropod 1 (Fig. 14): longer than uropod 2; peduncle longer than rami, several short simple setae along outer margin; biramous, rami subequal, three strong setae around basis of inner ramus. Uropod 2 (Fig. 14): longer than uropod 3; biramous; peduncle subequal to inner ramus, inner ramus longer than outer ramus; peduncle with few simple setae, rami naked. Uropod 3 (Fig. 14): uniramous, ramus with two articles; peduncle with five strong setae, ramus inner article with one seta. Telson (Fig. 14): toungeshaped, elongate; flat; three pairs of robust setae.</p><p>Ecology: we have no notion about the ecology of this species. Shoemaker (1955) mentions females to be very similar to males, only a little smaller, and with shorter antennae.</p><p>Distribution: only known from type locality</p><p>Remarks: Shoemaker (1955) mentions this species to be very close to Metopa bruzelii (Goës, 1866) as it is figured in Sars (1890-95), but a little "stouter", especially gnathopod 2, which must have been taken out for special examination and is missing in the type. Because gnathopod 2 was missing in the examined specimen, the original description from Shoemaker (1955) is included here: "Gnathopod 2 moderately developed; sixth joint a little wider than the fifth and a little shorter than the second, front and hind margins slightly convex, and widest in the middle; palm oblique, a little shorter than hind margin of joint, convex, bearing low wavy teeth, the central one of which is the largest, defined by an angular process adjacent to which is a shallow sinus bearing a spine; seventh joint fitting palm and bearing a row of spinules on inner margin." Shoemaker further mentions this gnathopod to be more robust than in Metopa bruzelii, the palm of M. bruzelii being smooth and not having a sinus adjacent to the defining angle. Shoemaker (1955) further mentions a 3- articulate mandibular palp, here it is described as two-articulate, but this character seems to be a plastic character in the genus Metopa (Tandberg &amp; Vader 2009) .</p></div>	https://treatment.plazi.org/id/565387F3FF99E34B70C7486910072EE4	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.		MagnoliaPress via Plazi	Tandberg, Anne Helene S.	Tandberg, Anne Helene S. (2009): A redescription of Metopa species (Amphipoda, Stenothoidae) based on the type material. 2. The United States National Museum of Natural History (NMNH). Zootaxa 2309: 43-68, DOI: 10.5281/zenodo.191826
565387F3FF85E34070C74F33109D2E03.text	565387F3FF85E34070C74F33109D2E03.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Metopa stelleri Shoemaker 1964	<div><p>Metopa stelleri Shoemaker, 1964</p><p>Metopa stelleri Shoemaker 1964: 394 –396, fig.2</p><p>Type locality: Cape Rollin, Simushir Island, Kurile Islands. 419m (Shoemaker, 1964)</p><p>Material examined. Morphological examination: 7 mm male from Alb. Sta. 4803 (46°42’ N, 151°45’ E), June 24, 1906, 229 fath. (419 m) Cape Rodhin, Simshir Island (Kurile islands, Russia). This is the type locality, paratypes have been examined (from the same station as the type). These were also used in the 1964 paper from Shoemaker, the figures were made in 1952)</p><p>See figures 15, 16, 17 and 18.</p><p>Morphological description. Male, 7mm, paratype.</p><p>Head (Fig. 15): epistome small and rounded; cephalic lobe rounded; eye 1/3 of head length, round, well defined. Antenna 1 (Fig. 15): half length of body, slender; peduncle subequal in length to flagellum; flagellum 16-articulate, naked; no accessory flagellum observed. Antenna 2 (Fig. 15): slightly longer than A1; slender; peduncle article 4 slightly longer than article 5; flagellum subequal to peduncle article 5, 12-articulate. Labium (Fig. 16): round; short simple setae at apex. Mandible (Fig. 16): palp 3-articulate, article 3 very small, article 2 elongate, cross-section circular; right mandible with lacinia mobilis broadly serrate with one tooth at inner margin; incisor serrate and well defined on both sides; 15 strong, serrate raker setae, no molar. Maxilla 1 (Fig. 16): inner plate naked and small; outer plate with six strong (two of which are serrate) setae and one tooth, a series of simple setae along inner margin, palp 2x length of outer plate, 1-articulate, one tooth and one strong seta at apex, serrate with a row of shorter setae along inner margin, several simple setae on palp face. Maxilla 2 (Fig. 16): outer plate in normal position to inner plate, inner plate somewhat shortened, outer plate setose (37 simple setae), inner plate with four long and several shorter simple setae. Labrum (Fig. 16): rounded; bilobed. Maxilliped (Fig. 16): long and slender; inner plates partly divided, one small and one slightly longer simple seta on distal margin; outer plate very small, reaching 1/8 of palp article 1 length; palp 4-articulate, article 3 with thin cushion of short simple setae distally; article 4 with a dense row of short simple setae along inner margin.</p><p>Pereon: pereonites 1–5 dorsally smooth, pereonites 6 and 7 and pleon segments 1 and 2 produced dorsally into backward-pointing teeth, forming a small carina. Gnathopod 1 (Fig. 17): subchelate; coxa very small and subquadrate; basis linear, distal anterior margin with long simple setae; ischium subquadrate; merus not distally free, a thick cushion of simple short setae at posterodistal margin, several longish simple setae at distal margin; carpus longish, several long simple setae at posterior margin; propodus as long and wide as carpus, two rows of simple setae along anterior margin, palm oblique, almost transverse, smooth with short simple setae, palmar corner rounded, posterior margin longer than palm; dactylus smooth with flat inner margin (3– dimensional) covered with a thick row of short setae, as long as palm, very slightly curved. Gnathopod 2 (Fig. 17): coxa covering coxa 1, suboval, pointing forwards; basis linear, a row of simple setae along anterior "keel" (basis having a triangular cross-section); ischium short with simple setae along posterior margin; merus subtriangular, few simple setae at distal margin; carpus short, posterodistal margin with a patch of flat, short setae forming a flat cushion around posterodistal margin, a row of simple setae along distal margin; propodus elongate and slightly broader than carpus, suboval, palm oblique and crenulate with a large excavation near palmar corner, forming a tooth, posterior margin as long as palm; dactylus smooth with flat inner margin with row of tiny setae, curved, reaching tooth of palm. Pereopod 3 (Fig. 17): coxa subrectangular; rest of leg slender, long and simple, almost naked; propodus 3x dacylus; dactylus with serrate posterior margin. Pereopod 4 (Fig. 17): coxa subtriangular, ventral margin convex; rest of leg slender, thicker than P3; carpus and propodus with short groups of several setae along posterior margin, dactylus with serrate posterior margin, reaching 0.5x propodus. Pereopod 5 (Fig. 18): coxa small; basis linear; meral lobe reaching 0.5x carpus; dactylus reaching 0.5 propodus, serrate anterior margin; basis and merus with short simple setae along posterior margins, carpus and propodus with brushes of groups of three simple setae along anterior margins. Pereopods 6 and 7 (Fig. 18): coxae small; bases posteriorly expanded; meral lobe reaching 0.7x and 0.8x carpus, respectively, simple short setae along posterior and anterior margins; carpus and propodus with brushes of 3 simple setae along anterior margins; dactyli with serrate anterior margins, reaching less than 1/2 length of propodus.</p><p>Urosome (Fig. 18): smooth. Epimeral plate 3 (Fig. 18): rounded sharp angle. Uropod 1 (Fig. 18): longer than uropod 2; biramous; peduncle longer than rami, several short simple setae along outer margin; rami subequal. Uropod 2 (Fig. 18): longer than uropod 3; biramous; peduncle longer than rami, row of short simple setae along outer margin; inner ramus longer than outer ramus, few short simple setae on inner ramus. Uropod 3 (Fig. 18): uniramous, peduncle longer than ramus, row of simple setae along outer margin; ramus 2- articulate, articles subequal, one seta at inner article. Telson (Fig. 18): round, somewhat boat-shaped; four pairs of robust and one pair of small setae.</p><p>Shoemaker (1964) mentions that the female is very like the male, but with shorter antennae. He further proposes this species to be close to Metopa cristata, from which it differs in the lack of dorsal teeth on pereon segments 1–5.</p><p>Ecology: we know nothing about the ecology.</p><p>Distribution: this is only known from the type locality and the nearby Albatross station 4804 (4642’ N, 151 47 ’E) both by the Kurile Islands, both at around 400m depths.</p></div>	https://treatment.plazi.org/id/565387F3FF85E34070C74F33109D2E03	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.		MagnoliaPress via Plazi	Tandberg, Anne Helene S.	Tandberg, Anne Helene S. (2009): A redescription of Metopa species (Amphipoda, Stenothoidae) based on the type material. 2. The United States National Museum of Natural History (NMNH). Zootaxa 2309: 43-68, DOI: 10.5281/zenodo.191826
