196,660 research outputs found
Fig. 26 in New deep-sea Atlantic and Antarctic species of Abyssorchomene De Broyer, 1984 (Amphipoda, Lysianassoidea, Uristidae) with a redescription of A. abyssorum (Stebbing, 1888)
No full textFig. 26. Abyssorchomene shannonae sp. nov., holotype, ♀, 12 mm (ZMH K-61209); allotype, ♂, 7 mm (ZMH K-61210), RV Polarstern ANT XXII-3 (ANDEEP III), station PS67-78-1, eastern Weddell Sea, depth 2194 m., 21 February 2005. Dotted line on habitus shows approximate stomodeum position. Figures with sex not indicated are of female. Scale bars = 1 mm.Published as part of <i>Hendrycks, Ed A. & Broyer, Claude De, 2022, New deep-sea Atlantic and Antarctic species of Abyssorchomene De Broyer, 1984 (Amphipoda, Lysianassoidea, Uristidae) with a redescription of A. abyssorum (Stebbing, 1888), pp. 1-76 in European Journal of Taxonomy 825</i> on page 54, DOI: 10.5852/ejt.2022.825.1829, <a href="http://zenodo.org/record/6686625">http://zenodo.org/record/6686625</a>
Fig. 10 in New deep-sea Atlantic and Antarctic species of Abyssorchomene De Broyer, 1984 (Amphipoda, Lysianassoidea, Uristidae) with a redescription of A. abyssorum (Stebbing, 1888)
No full textFig. 10. Abyssorchomene patriciae sp. nov., habitus, ♂, size unknown, RRS James Cook (2007), Northwest Atlantic, Mid-Atlantic Ridge, north of Charlie-Gibbs Fracture Zone, station JC 011-079, 53°56.44′ N, 36°11.56′ W, depth 2564 m, trap deployed 5 August 2007 (photo taken August 7, 2007 by David Shale, permission granted).Published as part of <i>Hendrycks, Ed A. & Broyer, Claude De, 2022, New deep-sea Atlantic and Antarctic species of Abyssorchomene De Broyer, 1984 (Amphipoda, Lysianassoidea, Uristidae) with a redescription of A. abyssorum (Stebbing, 1888), pp. 1-76 in European Journal of Taxonomy 825</i> on page 28, DOI: 10.5852/ejt.2022.825.1829, <a href="http://zenodo.org/record/6686625">http://zenodo.org/record/6686625</a>
Fig. 11 in New deep-sea Atlantic and Antarctic species of Abyssorchomene De Broyer, 1984 (Amphipoda, Lysianassoidea, Uristidae) with a redescription of A. abyssorum (Stebbing, 1888)
No full textFig. 11. Abyssorchomene patriciae sp. nov., holotype, ♀, 10.5 mm (NHM UK 2022.6); allotype, ♂, 7.5 mm (NHM UK 2022.7), RRS James Cook (2011), station JC 062-063, Northeast Atlantic, Porcupine Abyssal Plain, depth 4848 m, 8 August 2011. Aesthetascs omitted from A1 callynophore. End of flagellar articles missing on male and female A1. Scale bars = 0.5 mm unless indicated otherwise.Published as part of <i>Hendrycks, Ed A. & Broyer, Claude De, 2022, New deep-sea Atlantic and Antarctic species of Abyssorchomene De Broyer, 1984 (Amphipoda, Lysianassoidea, Uristidae) with a redescription of A. abyssorum (Stebbing, 1888), pp. 1-76 in European Journal of Taxonomy 825</i> on page 29, DOI: 10.5852/ejt.2022.825.1829, <a href="http://zenodo.org/record/6686625">http://zenodo.org/record/6686625</a>
Leucothoe weddellensis Krapp-Schickel & Broyer 2014, sp. nov.
No full textLeucothoe weddellensis sp. nov. urn:lsid:zoobank.org:act: 2069CF2D-D7B6-4A96-874A-46818C6A3344 Figs 19-27 sub L. spinicarpa variant 1 – Holman & Watling 1983: 227-230 fig. 10 (but see also discussion about L. spinicarpa variant 1 and 2). Etymology The latinized adjective refers to the fact that much of the material comes from the Weddell Sea. Type material Holotype ♀ ov. 20 mm (in alcohol) (RBINS, Brussels, I.G. 31073/ INV. 103464); Polarstern ANT XIX/3 (ANDEEP I): sta. PS61/067 GSN; 4 Feb. 02; Scotia Sea, north to Elephant Island; 60°55’53”S, 55°27’38”W to 60°55’09”S, 55°24’50”W; 115-182 m; bottom trawl; coll. C. De Broyer, P. Dauby & F. Nyssen. Preliminary remarks Before starting to cite the localities, we have to explain the division in two parts: Quite like Holman & Watling (loc. cit.) we hesitated between attributing the entire material to one species, or dividing the material into two new species. Like the cited authors we first separated the material into two different size classes with large or small ovigerous females, but then could not find any clearcut morphological definition which would not show here or there intermediate structures. Unfortunately, we have no clue about the life span of these females and how often they become ovigerous, thus all the observed tiny differences could also be due to allometry. Therefore we kept the locality citations separated and first gave information about the smaller specimens, followed by the larger ones. This might help to continue gathering observations within this so puzzling genus. Diagnosis for the material of 6-14 mm length Eyes big, round. Mandibular palp ratio art. 3:art. 2 = 0.6. Cx 3 tongue-shaped rounded, smooth. Gn 1 propodus l:w = 5, dactylus reaching 1/4-1/3 of propodus length. P 5-7 basis narrow oval, P 5, 6 with slightly concave hind margin, P 7 hind margine serrate, ratio l:w about 2. Ep 2, 3 posterodistally with small rounded upturned corner. T l:w = 3. Additional smaller specimens Australian Museum, Sydney P. 25977: 1 Feb. 1971; Ross Sea, Ross Island, Cape Bird, Southern Rookery; 77.2°S, 166.4° E; 83 m depth: 1 spec. 10 mm. P. 25978: sta. C3-C4; 14 Dec. 1971; Ross Sea, Ross Island, Cape Bird, Southern Rookery; 77.2°S, 166.4°E; 85 m depth; spionid polychaete bottom: 1 spec. 14 mm. P. 25979: 30 Jan. 1971; Ross Sea, Ross Island, Cape Bird, Southern Rookery; 77.2°S, 166.4° E; 61 m depth: 3 spec. 10 mm, 9 mm, 6 mm. P. 25980: sta. R13; 9 Feb. 1971; Anvers Island, Arthur Harbour; 64.8°S, 64.1°W; 23 m depth; sand 50%, silt 44%, clay 7%: 1 spec. 6.5 mm. P. 25981: sta. R13; 9 Feb. 1971; Anvers Island, Arthur Harbour; 64.8°S, 64.1°W; 23 m depth; sand 49.9%, silt 43.78%, clay 7.14%: 1 spec. 7 mm. P. 34272: 8 Jan. 1982; Davis Station; 68.6°S, 78°E; 15 m depth; rock and silt: 1 spec. 13 mm, 1 juv. P. 81141: 14 Jan. 1971; Ross Sea, MacMurdo Sound, Ross Island, Cape Bird; 77.2°S, 166.4° E; 110 m depth: 1 spec. 10 mm. Belgian-Dutch Antarctic Expeditions (RBINS, Brussels: EABN 1966-67, coll. M. Steyaert & M. Meisch, RBINS I.G. 23694) EABN 1966-67: sta. 220; 3 Feb. 1967; Breidbay, Baie Léopold; 70°19’S, 24°14’E; 200 m: 2 spec. 13 and 14 mm. EABN 1966-67: sta. 236; 3 Feb. 1967; Breidbay, Baie Léopold; 70°19’S, 24°14’E; 200 m: 1 spec. 12 mm. British Antarctic Survey, Cambridge Sta. SG-EBS 3-5; 5 Apr. 2006; South Georgia; 54°15’S 36°45’W; 300-500 m: 1 spec. 6 mm. NIWA, Wellington NIWA 20425: sta. Tangaroa TAN 0402/15; 5 Feb. 2004; north-eastern Ross Sea, near Cape Adare; 71.7278°S, 171.7353°E to 71.7308°S, 171.7445°E; 466-467 m: 1 spec. 11 mm. NIWA20427: sta. Tangaroa TAN 0402/54; 13 Feb. 2004; north-eastern Ross Sea; 72.3248°S, 170.4277°E to 72.3315°S, 170.4287°E; 206- 199 m; 1 spec. 13 mm NIWA 20428: sta. Tangaroa TAN 0402/94; 17 Feb. 2004; north-eastern Ross Sea; 71.5299988°S, 170.1109924°E to 71.5234985°S, 170.1131744°E; 220- 191 m; 1 spec. 11 mm. NIWA 20873: sta. Tangaroa TAN 0402/14; 5 Feb. 2004; north-eastern Ross Sea; 71.7313309°S, 171.7500000°E; 451 m: 1 spec. 9 mm, NIWA 20874: sta. Tangaroa TAN 0402/129; 19 Feb. 2004; north-eastern Ross Sea; 71.3268356°S, 170.4515076°E to 71.3268356°S, 170.4515076°E, 120 m,. 1 spec. 10 mm, NIWA 21022: sta. Tangaroa TAN 0402/111; 18 Feb. 2004; north-eastern Ross Sea; 71.3044968°S 170.6179962°E; 357 m: 1 spec. 10 mm. Polarstern cruises (ANT VII/4 (EPOS 3), coll. C. De Broyer & M. Klages, RBINS I.G. 27497; ANT XIII/3 (EASIZ I), coll. C. De Broyer & G. Chapelle, RBINS I.G. 28252; ANT XV/3 (EASIZ II), coll. C. De Broyer & Y. Scailteur, RBINS I.G. 28252; ANT XXI/2 (BENDEX), coll. C. De Broyer, RBINS I.G. 31072; ANT XXIII-8, coll. C. d’Udekem d’Acoz & H. Robert, RBINS I.G. 31070) ANT VII/4 (EPOS 3): sta. PS14/245 GSN9; 2 Feb. 1989; eastern Weddell Sea; 74°40’S, 29°40’W; 483 m; bottom trawl: 3 spec. 14 mm; 2 smaller ones. ANT VII/4 (EPOS 3): sta. PS14/245 AGT9; 2 Feb. 1989; eastern Weddell Sea; 74°40’S, 29°42’W; 509 m; Agassiz Trawl: 1 spec. ♀ 12 mm. ANT XIII/3 (EASIZ I): sta. PS39/006 AGT1; 8 Feb. 1996; eastern Weddell Sea; 71°31’S, 13°34’W to 71°31’S 13°35’W; 254-261 m; Agassiz Trawl: 2 spec. 11 and 13 mm and one damaged. ANT XIII/3 (EASIZ I): sta. PS39/011 GSN4; 13 Feb. 1996; eastern Weddell Sea; 73°22’S, 21°10’W to 73°23’S, 21°12’W; 333-338 m; bottom trawl: 1 spec. 14 mm with orange spots. ANT XIII/3 (EASIZ I): sta. PS39/016 GSN; 15 Feb. 1996; eastern Weddell Sea; 73°53,40’S, 22°26,90’W; 246 m; bottom trawl: 1 spec. 11 mm. ANT XIII/3 (EASIZ I): sta. PS39/026 D; 24 Feb. 1996; eastern Weddell Sea, 71°29’S, 14°19’W to 71°29’S, 14°19’W; 210-214 m; dredge 21; coll. Rauschert: 2 spec. ANT XV/3 (EASIZ II): sta. PS48/044 AGT; 30 Jan. 1998; eastern Weddell Sea, north of Kapp Norvegia; 70°51’48”S, 10°34’W to 70°51’54”S, 10°33’48”W; 227-229 m; Agassiz Trawl: 1 spec. 14 mm. ANT XV/3 (EASIZ II): sta. PS48/049 AGT; 30 Jan. 1998; eastern Weddell Sea; 70°52’S, 10°27’18”W to 70°51’54”S, 10°26’48”W; 255-261 m; Agassiz Trawl: 1 spec. 12 mm. ANT XV/3 (EASIZ II): sta. PS48/077 AGT; 2 Feb. 1998; eastern Weddell Sea; 71°09’42”S, 12°28’42”W to 71°09’54”S, 12°29’12”W; 341-360 m; Agassiz Trawl: 1 spec. 13 mm.- ANT XV/3 (EASIZ II): sta. PS48/078 GSN; 3 Feb. 1998; eastern Weddell Sea; 72°51’06”S, 19°15’06”W to 72°50’54”S, 19°18’42”W; 390-391 m; bottom trawl: ♂ 14 mm, with orange spots in alcohol. ANT XV/3 (EASIZ II): sta. PS48/082 GSN; 3 Feb. 1998; eastern Weddell Sea, Drescher Inlet; 72°50’48”S, 19°18’48”W to 72°50’48”S, 19°21’54”W; 395-417 m; bottom trawl: 2 spec. 13 mm. ANT XV/3 (EASIZ II): sta. PS48/154 GSN; 11 Feb. 1998; eastern Weddell Sea, Halley Bay; 74°38’42”S, 26°59’W to 74°39’12”S, 27°01’12”W; 569-583 m; bottom trawl: 3 spec. 10-13 mm. ANT XV/3 (EASIZ II): sta. PS48/206 GSN; 18 Feb. 1998; eastern Weddell Sea, Kapp Norvegia; 71°00’24” S, 11°42’36”W to 71°00’42”S, 11°42’30”W; 594-602 m; bottom trawl: 1 spec. 12 mm. ANT XV/3 (EASIZ II): sta. PS48/222 GSN; 19 Feb. 1998; eastern Weddell Sea, Kapp Norvegia; 70°50’30”S, 10°35’30”W to 70°51’S, 10°35’30”W; 234-267 m; bottom trawl: 1 spec. 12 mm. ANT XXI/2 (BENDEX): sta. PS65/29 AGT; 25 Nov. 2003; Bouvet Island; 54°31,59’S, 03°13,05’E; 377 m; Agassiz Trawl; in sponge, 56 m: 2 spec. 10 and 12 mm. ANT XXIII/8, sta. PS69/RD 726-1; 23 Jan. 2007; Snow Hill Island; 64°30.86’S, 56°40.23’W; 197 m; Rauschert dredge; ♀ ov. 14 mm, 2 spec. 12 mm. Description Length Up to 14 mm Head Anterior margin rounded, anterodistal margin rectangular with rounded corner. Mid-cephalic keel prominent. Rostrum small, curved. Eyes large, round. Antenna 1 one third of body length, flagellum 10-14-articulate, peduncle art. 1 width proximally less than twice article 2, disto-inferiorly without acute tooth, length art. 1 subequal art. 2, art. 3 about 1/2 of art. 2, acc. flagellum not seen. Peduncle art. 3 + flagellum shorter than peduncle arts 1+2. Antenna 2 subequal in length with antenna 1, peduncle art. 4 clearly longer art. 5, flagellum 9-10 arts. Mouthparts: Mandibles lacking molars, incisor and lacinia mobilis dentate; palp 3-articulate, art. 2 with many lateral setae of different length, art. 3 with 2 distal setae, art. 3> 1/2 art. 2. Maxilliped IP small, OP very short; palp articles similar in length. Peraeon Cx 1 smooth, length> width; anterior margin smooth, facial setae absent, inferior margin smooth. Gn 1 basis not inflated, both margins with short setae; carpus basis more than half as long as propodus, distal part linear and narrow, about 10 x longer than wide; propodus straight, about 5 x as long as wide, palm minutely dentate with 9 short setae; dactylus smooth, reaching up to 1/3 propodus length. Cx 2 subquadrangular, about as long as wide, much wider than Cx 3, distally smooth; anterior margin convex, anterodistal corner rectangular, inferior margin straight, facial setae absent. Gn 2 basis scarcely inflated, many short setae on anterior margin; carpus nearly reaching half propodus length, curved, distally truncate, densely setose; propodus anterodistally with short prolongation and a bundle of setae, posterior margin with many low humps, palm convex, proximally near dactylus-end no corner; dactylus curved, both margins smooth, bare, reaching more than half of propodus length. Cx 3 length> width, distally obliquely rounded, tongue-shaped, smooth, facial setae absent. Cx 4 length subequal to width, smooth, bare, anterior margin convex, distal margin rounded, posterior margin shorter than anterior one, excavate, facial setae absent. P 3, 4 basis very narrow, a bit wider than merus; dactylus reaching less than half length of propodus, posterior margins with some short thin spines. Cx 5-7 facial setae absent. P 5-7 similar, bases l:w ratio up to 2, anterior margins with very slight serrations and small weak spines, posterior margins in P 5, 6 smooth, in P 7 weakly. Merus in P 5-7 with posterodistal corner lengthened. Pleon Ep 1-3 without spines or setae. Ep 2 posteroventral corner not acutely upturned, but produced with rounded corner, Ep 3 posteroventral corner blunt and rectangular. Uropods: U 1 with somewhat unequal rami, the shorter one shorter than peduncle; U 2 the shortest, with unequal rami, the shorter one subequal to peduncle; U 3 with equal rami much shorter than peduncle. Telson ratio l:w = 3. No sexual difference noticed. Distribution Circum-Antarctic (54°- 77°S, 10°- 64°W and 03°- 171°E). Depth range 15- 602 m. Remarks In Holman & Watling (1983: 227, fig. 11: upper part, L. spinicarpa variant 2) only few sketches of females of 6-6.5 mm are given which could match the here described specimens of 10-14 mm. On p. 229 the authors wrote: “[...] smaller specimens [in comparison to the following species of 20 mm] tending not to have this tooth [on Ep 3 posterodistal corner] or distinctive shape of Cx 3.[...] At stations where both variants 1 and 2 occurred, there is also a clear size dichotomy.” Diagnosis for the material of 14-24 mm length Eyes large, round. Cephalic keel acute. Mandibular palp ratio art. 3:art. 2 = 0.3. Cx 3 in large specimens distal margin excavate, posterodistal corner lengthened and tongue-shaped rounded, smooth, in smaller ones without this character. Gn 1 propodus l:w = 5-6, dactylus reaching 0.4 of propodus length. P 5-7 basis pear-shaped oval, all with convex and serrate hind margin, ratio length to width 1.7-1.8. Ep 1 posterior margin serrate, Ep 2 posterodistally with acutely lengthened but not much upturned corner, Ep 3 posteriordistal corner rectangular, with small prolongation. T l:b = 3. Additional larger size material NIWA, Wellington NIWA 9062: sta. LOCVI-2; Ross Sea, west to Beaufort Island; 77.8327789°S, 166.6138916°E; 28 Dec. 1959, 9- 19 m, 1 spec. 15 mm, NIWA 17881: Tangaroa sta. TAN 0402/53; 13 Feb. 2004; north-eastern Ross Sea; 72.3310013°S, 170.4278259°E; 197 m: 1?juv. 10 mm. NIWA 20426: Tangaroa sta. TAN 0402/67; 13 Feb. 2004; north-eastern Ross Sea; 72.3209991°S, 170.4751740°E to 72.3345032°S 170.4813385°E; 272-286 m: 1 spec. 13 mm NIWA 20429: Tangaroa sta. TAN 0402/108; 18 Feb. 2004; north-eastern Ross Sea; 71.2718353°S, 170.5996704°E to 71.2773361°S 170.6151733°E; 400-405 m: 1 spec. 13 mm, NIWA 20430: Tangaroa sta. TAN 0402/112; 18 Feb. 2004; north-eastern Ross Sea; 71.2935028°S, 170.5766602°E to 71.2961655°S 170.5908356°E; 346-351 m: 1 spec. 17 mm. NIWA 20431: Tangaroa sta. TAN 0402/133; 23 Feb. 2004; north-eastern Ross Sea; 71.6446686°S, 170.2188263°E to 71.6470032°S 170.2243347°E; 249-252 m: 1 spec. 15 mm. Polarstern cruises (ANT XV/3 (EASIZ II), coll. C. De Broyer & Y. Scailteur, RBINS I.G. 28252; ANT XIX/3 (ANDEEP I), coll. C. De Broyer, P. Dauby & F. Nyssen, I.G. 31073) ANT XV/3 (EASIZ II): sta. PS48/078 GSN; 3 Feb. 1998; eastern Weddell Sea; 72°51’06”S, 19°15’06”W to 72°50’54”S, 19°18’42”W; 390-391 m; bottom trawl: ♂ 16 mm, with orange spots. ANT XV/3 (EASIZ II): sta. PS48/062AGT; 31 Jan. 1998; eastern Weddell Sea; 70°53’36”S, 10°28’06”W to 70°53’42”S, 10°28’12”W; 235-241 m; Agassiz Trawl: 1 spec. 12 mm in 3 slides, 2 spec. 13 mm, 20 mm, all without eggs. ANT XIX/3 (ANDEEP I): sta. PS61/047-I; 30 Jan. 2002; north of Elephant Island; 61°04,18’S, 54°36,81’W; 190 m; bottom trawl: 9 spec. 18-20 mm. ANT XIX/3 (ANDEEP I): sta. PS61/048-1; 30 Jan. 2002; east of Elephant Island; 61°09,82’S, 54°33,40’W; 343 m; bottom trawl: 1 spec. 20 mm. ANT XIX/3 (ANDEEP I): sta. PS61/067 GSN; 4 Feb. 2002; north of Elephant Island; 60°55’53”S, 55°27’38”W to 60°55’09”S, 55°24’50”W; 115-182 m; bottom trawl: 1 spec. 20 mm. Polish Antarctic Expeditions (LPBO-UL, Łódź) Polish Ant. Exp. 2007, sta. Profile B II/4; 27 Mar. 2007; King George Island,Admiralty Bay; 62°09,643’S, 58°30,182’W; 112 m; Van Veen Grab; 1 spec. 19 mm. Polish Ant. Exp. 2007, sta. Profile B I/1; 27 Mar. 2007; King George Island, Admiralty Bay; 62°09,703’S, 58°30,272’W; 109 m; Van Veen Grab: 1 spec. 10 mm. Victoria Museum, Melbourne J 38264: Aurora Australis, sta.AA93-127; Lot 414; 12 Feb. 1993, 67°16.12’S, 65° 25.23’E; Mac Robertson Shelf, edge of Nielsen Basin; 109 m: 1 ov. ♀ 15 mm. Description Length Up to 24 mm. Head Anterior margin rounded, anterodistal margin rectangular with rounded corner. Mid-cephalic keel acute. Rostrum small, curved. Eyes large, round. Antenna 1 one third of body length, flagellum 20-articulate, peduncle art. 1 width proximally less than twice article 2, distally without acute tooth, length art. 1> art. 2, art. 3 about 1/3 of art. 2, acc. flagellum not seen. Peduncle art. 3 + flagellum shorter than peduncle arts 1+2. Antenna 2 subequal in length to antenna 1, peduncle art. 4 clearly longer art. 5, flagellum 10-16 arts. Mouthparts: Mandibles lacking molars, incisor and lacinia mobilis dentate; palp 3-articulate, art. 2 with many lateral and some distal setae of different length, art. 3 with 3 distal setae, art. 3 = 1/2 art. 2. Maxilliped IP small, OP absent; palp articles similar in length. Peraeon Cx 1 smooth, length = width; anterior margin smooth, facial setae absent, inferior margin smooth. Gn 1 basis not inflated, both margins smooth; carpus basis about half as long as propodus, distal part linear and narrow, about 8 x longer than wide; propodus straight, about 4.5 x as long as wide, palm smooth with 7-8 short setae; dactylus smooth, reaching 2/5 propodus length. Cx 2 subquadrangular, about as long as wide, much wider but shorter than Cx 3, distally smooth; anterior margin convex, anterodistal corner rectangular, inferior margin straight, facial setae absent. Gn 2 basis not inflated, many short setae on anterior margin; carpus nearly reaching half propodus length, curved, distally excavate in male, rounded in female, densely setose; propodus anterodistally with short, acute prolongation and a bundle of setae, posterior margin with many low humps, palm convex, proximally near dactylus-end no corner; dactylus curved, both margins smooth, bare, reaching more than half of propodus length. Cx 3 length> width, anterior and posterior margin straight, distal margin oblique and excavate, posterodistal corner in large animals tongue-shaped and lengthened, smooth, facial setae absent. Cx 4 length subequal to width, smooth, bare, anterior margin rounded, distal margin straight to excavate, posterior margin shorter than anterior one, straight to slightly excavate, facial setae absent. P 3, 4 basis very narrow, a bit wider than merus; dactylus reaching less than half length of propodus, posterior margins with some short thin spines. Cx 5-7 facial setae absent. P 5-7 similar, bases l:w ratio 1.7-1.8, anterior margins with very small spines, posterior margins serrate. Merus in P 5-7 with posterodistal corner lengthened. Pleon Ep 1-2 with spines anterodistally. Ep 2 posteroventral corner not upturned, but produced with acute corner, Ep 3 posteroventral corner rectangular with small rounded prolongation. Uropods: U 1 with equal rami, shorter than peduncle; U 2 the shortest, with unequal rami, the shorter one clearly shorter than peduncle; U 3 with slightly unequal rami much shorter than peduncle. Telson ratio l:w = 3. Distribution of the larger specimens Circum-Antarctic (60°- 78°S, 10°- 58°W and 65°- 170°E). Depth range 9- 405 m. Holman & Watling (1983) recorded “ L. spinicarpa variant 1” in the Drake Passage, south of Tierra del Fuego (Eltanin 9, sta. 740; 18 Sep. 1963; 56°06-07’S, 66°19’-30’W; 384-494 m), on the South Georgia shelf (Islas Orcadas 575, sta. 82; 6 Jun. 1975; 55°29.0’S, 35°20.5’W; 413-462 m; sta. 90; 7 Jun. 1975; 54°50.6’S, 37°23.8’W; 223-227 m), in the Scotia Sea (Eltanin 6, sta. 410; 31 Dec. 1962; 61°18’-20’S, 56°09’-10’W; 220-240 m) and north of the Antarctic Peninsula (Eltanin 12, sta. 1003; 15 Mar. 1964; 62°41’S, 54°43’W; 210-220 m). Remarks In Holman & Watling (1983: 227, Fig. 10) males are illustrated which are 19-24 mm long and match perfectly to the here illustrated material of 20 mm. Holman & Watling (l.c.: 229) defined their variant 1 as follows: “...ventral margin of coxa 3 bilobed in larger specimens, coxa 4 not excavate posteriorly. Gnathopod 1 very similar to that illustrated by Sars (1895) for L. spinicarpa, dactyl nearly half length and twice width of propodus, latter 5 times as long as wide. Gnathopod 2, distal margin of article 5 bifurcate in large males. Third epimeron posterodistal corner with small tooth but without distinct sinus above; however, smaller specimens tending not to have this tooth or distinctive coxa 3 shape....” Differences to the smaller material are, besides the nearly double length of mature females, the length of Md palp art. 3 (we doubt that there can be such a strong allometry), the shape of Cx 3, P 5-7 basis and U 3 rami. However, the main reason of our hesitation is that we found samples with both small and larger ovigerous females, and with larger specimens with and smaller ones without the characteristic shape of Cx 3 living together. Within all hitherto known Leucothoe species only L. serraticarpa Della Valle, 1893 has a distal lobation on a coxa in large specimens (like here on Cx 3), but in the former it is in Cx 4 and has a different shape.Published as part of Krapp-Schickel, Traudl & Broyer, Claude De, 2014, Revision of Leucothoe (Amphipoda, Crustacea) from the Southern Ocean: a cosmopolitanism concept is vanishing, pp. 1-55 in European Journal of Taxonomy 80 on pages 38-52, DOI: 10.5852/ejt.2014.80, http://zenodo.org/record/386090
Abyssorchomene shannonae Hendrycks & Broyer 2022, sp. nov.
No full textAbyssorchomene shannonae sp. nov. urn:lsid:zoobank.org:act: EEBF5622-BB6E-4CA5-9767-4CFE71A4ED9F Figs 26–34 Diagnosis Pereonites 1–7 and pleonites 1–2 with a weak but distinct dorsoposterior hump on each segment. Lateral cephalic lobe broadly rounded, dorsal and ventral margins nearly equally convex. Antennae 1–2 of male with calceoli, female without. Epistome level with the upper lip. Maxilla 1 palp, distal end weakly convex with distal conical spines contiguous. Maxilliped inner plate, distal margin nearly straight, strongly beveled, with a very slight concavity on outer half, with mediodistal extension surpassing outer corner; outer plate with strongly scalloped inner margin. Coxa 1 strongly widened distally, ~ 1.5–1.7 × proximal width. Gnathopod 2 propodus of female broad, anterodistal margin slightly expanded and protruding, length ~ 1.5× width, (different in form to narrow male propod), dactylus very small, inserted on the posterodistal one-third of the distal margin, palm with a distinct concavity. Coxa 5 distinctly posterolobate, posteroventral lobe broadly rounded, posterior margin evenly rounded. Pereopod 7 basis with anterior margin slightly concave, distal half of posterior margin with a steep, strong bevel. Uropod 1 peduncle long, about 1.6× length of outer ramus. Uropod 3 inner ramus extends past distal end of article 1 and reaches 20–25% length of article 2 of outer ramus. Telson cleft 55% of length, deeper in males. Etymology The species name is dedicated to Shannon Hendrycks, the wife of the first author for her continued enthusiasm and support over the many years of this and other amphipod studies. Material examined Holotype EASTERN WEDDELL SEA • ♀ (12 mm, mature, figured, appendages on 7 slides); RV Polarstern ANT XXII-3 (ANDEEP III), station PS67-78-1; 71°9.91′ S, 014°4.80′ W; depth 2194 m; gear, baited traps; 21 Feb. 2005; C. De Broyer and B. Danis leg.; ZMH K-61209. Allotype EASTERN WEDDELL SEA • ♂ (7 mm, figured, appendages on 6 slides); same collection data as for holotype; ZMH K-61210. Paratypes EASTERN WEDDELL SEA • 2 ♀♀ (8.4 mm, with dissected Gn1–2, 9.5 mm); same collection data as for holotype; RBINS INV. 138.491 • 2 ♀♀ (8.4 mm, 11.8 mm); same collection data as for holotype; CMNC 2022-0009 • 2 ♀♀ (mature, 10 mm), 4 ♀♀ (immature, 7.5 mm), 4 ♂♂ (~ 6 mm); same collection data as for holotype; CMNC 2022-0010. Additional material EASTERN WEDDELL SEA • 6 specs (6–8 mm); RV Polarstern ANT XXII-3 (ANDEEP III), station PS67-80-1; 70°40.78′ S, 014°41.24′ W; depth 2928 m; gear, baited traps; 22 Feb. 2005; C. De Broyer and B. Danis leg.; RBINS INV. 138.492 • 2 ♀♀ (immature, 8.0 mm, 9.0 mm), 2 ♂♂ (5.6 mm, 7.0 mm); RV Polarstern ANT XXII-3 (ANDEEP III), station PS67-81-1; 70°31.63′S, 014°35.00′W; depth 4412 m; gear, baited traps; 23 Feb. 2005; C. De Broyer and B. Danis; RBINS INV. 138.496. NORTHWEST WEDDELL SEA • 1 ♀ (12.4 mm, mature); Powell Basin; RV Polarstern ANT XXII-3 (ANDEEP III), station PS67-142AT; 62°12.40′ S, 049°31.67′ W; depth 3411 m; gear, baited traps; 18 Mar. 2005; C. De Broyer and B. Danis leg.; RBINS INV. 138.497. SCOTIA SEA • 1 ♀ (12 mm, mature); US Antarctic Research Program, Eltanin 9, station 696; 56°53′ S – 56°59′ S, 037°27′ W – 037°17′ W; depth 3001 m; gear, Isaac-Kid Midwater Trawl; 28 Aug.1963; Smithsonian Oceanographic Sorting Centre, Washington, D.C. SOUTHWEST ATLANTIC • 2 ♀♀ (7 and 8 mm, immature), 1 ♂ (6 mm); Argentine Basin; RV Meteor, DIVA 3 M79/1 expedition, station 531; 35°56.49′ S, 048°53.85′ W; depth 4586 m; gear, baited traps; 15 Jul. 2009; E. Hendrycks leg.; ZMH K-61211. Description Holotype Mature female, 12 mm, ZMH K-61209. PEREONITES 1–7 AND PLEONITES 1–2 (Fig. 26). With a slight but distinct dorsoposterior hump on each segment. PLEONITE 3 (Fig. 26). With a rounded, posterodorsal elevation slightly overhanging urosomite 1. COXAE 1–2 (Fig. 26). Slightly shorter to nearly subequal to corresponding pereonites (in lateral view). COXAE 3–4 (Fig. 26). Subequal to slightly longer (1.15 ×) than corresponding pereonites. EPIMERON 3 (Fig. 26). Subquadrate, with posterodistal angle narrowly rounded and slightly obtuse, posterior margin very weakly convex, nearly straight, ventral margin convex. UROSOMITE 1 (Fig. 26). With a deep, broadly rounded dorsal concavity in front of the strong, regularly rounded, dorsal boss, slightly overhanging urosomite 2. LATERAL CEPHALIC LOBE (Fig. 26). Broadly rounded, dorsal and ventral margin nearly equally convex. EYE (Fig. 26). Non ommatidial, formed of pigment granules; long, relatively narrow, crescent shaped; extending parallel to the front head margin, length about two-thirds of the head height. ANTENNA 1 (Fig. 26). Peduncular article 1 dilated, length 1.3 × width; flagellum 13-articulate, length 1.5× peduncle, first article of flagellum callynophorate, densely furnished with double row of aesthetascs medially; accessory flagellum 5-articulate, first article wider and longer than remaining articles combined; calceoli absent. ANTENNA 2 (Fig. 26). Slightly longer (less than 1.3 ×) than antenna 1; geniculate between peduncular articles 3–4, peduncular articles 4–5 lined with anteromedial brush setae; flagellum 16-articulate, calceoli absent. EPISTOME (Fig. 26). Level with the slightly rounded upper lip, from which it is separated by a minute slit; forming long anterior cephalic ridge, weakly concave upward. UPPER LIP (Fig. 26). Anterior margin weakly convex, not protruding; midventral margin with a small, angular projection. MANDIBLE (Fig. 29). Incisor smoothly convex and slightly widened; left lacinia mobilis curved, with 2 strong and 1 weak apical teeth, right lacking; accessory spine row with 3 strong spines, interspersed with fine setae; molar forming a narrow crest, somewhat falciform, acutely produced on proximal end, setose with mixed ornamentation, distal half or third setiferous, proximal half or two-thirds forming a reduced, narrow, triturative surface, hairy process attached proximal to molar; palp attached proximal to molar, article 2 1.56 × length of article 3, with 27 A2 setae, article 3 falciform, 0.63 × length of article 2, with 1 A3-seta, 22 D3-pectinate setae and 3 E3 setae. LOWER LIP (Fig. 28). Outer lobes broad, slightly truncated medially and strongly setose, without inner lobes, mandibular lobes narrow. MAXILLA 1 (Fig. 28). Inner plate ovate, with small blunt distal projection surpassing the basal insertion of the 2 plumose apical setae; outer plate with 11 elongated spine-teeth in 7/4 crown arrangement; palp article 2 slightly widened at distal two-thirds, with 10 (left side) or 9 (right side) contiguous (or nearly contiguous) conical apical spines. MAXILLA 2 (Fig. 28). Outer and inner plates strongly tapering distally, both with strong rows of pectinate medial marginal spines and setae; inner plate much shorter than outer plate, with marginal setae on the distal half of the inner margin; apex of inner plate slightly surpassing the proximal end of setal row of outer plate. MAXILLIPED (Fig. 30). Inner plate short, subrectangular, just reaching the distal end of the inner margin of palp article 1 and reaching about 0.3× length of outer plate, distal margin not excavate, very weakly concave on outer half and sloped, with weak medio-distal extension, with 3 equally spaced, strongly embedded nodular spines, medial margin strongly setose; outer plate well developed, subovate, length 1.58× width, not reaching inner distal end of palp article 2, with two dissimilar apical spines and numerous (10–11) embedded, medial nodular spines, medial margin distinctly scalloped; palp strongly setose medially, article 4 well developed, about half the length of article 3, with 6 apically plumose setae on distal inner margin. GNATHOPOD 1 (Fig. 31). Coxa distinctly widened, distal width 1.53 × proximal width and about 80% of length, anterior margin slightly concave, anterodorsal corner broadly rounded, posterior margin slightly sinuous, the distal half weakly concave, slightly convex in posterior half, posteroventral corner nearly right angled, narrowly rounded; basis stout, not expanded, width one-third of the length, slightly narrower than propod, anterior margin with long setae; ischium subequal to merus; carpus short, about half the length of the propodus, with produced narrow posterodistal lobe, not guarding the hind margin of propodus; propodus subchelate, subrectangular, with anterior margin regularly convex, posterior margin distinctly concave, with inflexion point at distal two-thirds, palm transverse, microcrenulate, palm corner with 2 blunt protrusions and defined by 1 medial and 1 lateral spine; dactylus subequal to palm or barely overriding palm corner. GNATHOPOD 2 (Fig. 31). Carpus stout, length 2× propodus; propodus chelate, suboval, anterodistal margin broadly expanded and slightly protruding, surface finely setose with distal groups of long pectinate setae, broad, length 1.48 × width, slightly narrower (about 90%) than carpus, hind margin weakly but distinctly convex; dactylus very small, inserted on the posterodistal one-third of distal margin, forming a distinct, curved cavity with the slightly excavate palm. PEREOPOD 3 (Fig. 32). Coxa with anterior margin slightly convex, posterior margin slightly concave, length 2.3× width; rest of pereopod like pereopod 4. PEREOPOD 4 (Fig. 32). Coxa with posterodistal lobe broadly rounded distally, angle subquadrate, located slightly more distally (55%) than half of the coxa length; posterior margins of ischium-merus with clusters of long setae; propodus with 6 short spine groups; dactylus ~ 0.4 × length of propodus. PEREOPOD 5 (Fig. 32). Coxa distinctly posterolobate, posterior lobe broad and regularly convex, coxa width slightly greater than length; basis length 1.13× width, posterior margin with small serrations and setules, posterodistal lobe extending to distal margin of ischium; merus slightly expanded (0.63× length), longer than carpus and bearing anterior and posterior setae; carpus with anterior marginal setae; propodus narrow, length equal to merus-carpus. PEREOPOD 6 (Fig. 32). Coxa with posterodistal lobe broadly rounded; basis length 1.54 × width, posterior margin with 3–4 weak serrations, posterodistal lobe not reaching distal margin of ischium; merus slightly expanded (narrower than in P5) and bearing anterior long setae and few short slender posterior spines only; propodus slightly shorter than merus-carpus, with 6–7 clusters of short spines; dactylus 0.3× length of propodus. PEREOPOD 7 (Fig. 32). Coxa small, subovate; basis with anterior margin slightly concave, distal half of posterior margin strongly beveled, nearly straight, with very weak concavity and 9 weak serrations, posterodistal lobe not extending to distal margin of ischium; merus not expanded (narrower than in P6), anterior margins of merus-carpus with short spine groups, posterior margin bearing few short slender spines; propodus slightly shorter than merus-carpus; dactylus 0.3× length of propodus. UROPOD 1 (Fig. 33). Peduncle long, about 1.6 × length of outer ramus and 1.74 × length of inner ramus, dorsolateral and dorsomedial margins spinose; inner ramus slightly shorter than outer, margins of rami with slender spines except medial margin of outer ramus, which lacks spines. UROPOD 2 (Fig. 33). Peduncle about 1.2× length of outer ramus, dorsolateral and dorsomedial margins with 4 and 3 spines respectively; inner ramus very slightly shorter than outer ramus; outer ramus with closely spaced slender spines on dorsolateral margin; inner ramus margins with slender spines. UROPOD 3 (Fig. 33). Peduncle long, 0.8 × length of biarticulated outer ramus; second article of outer ramus 0.46 × length of article 1; inner ramus extends past distal end of article 1 and reaches 20–25% of article 2 of outer ramus; inner margins of rami with long plumose setae and slender spines. TELSON (Fig. 33). 1.6 × longer than wide, relatively deeply cleft (55%), lobes tapering distally with 4 lateral, submarginal spines and 1 distal spine. GILLS 5–6 (Fig. 32). With 1 long tubular accessory lobe on gill 5 and 2 on gill 6. GILL 7 (Fig. 32). Present, well developed. BROOD PLATES (Fig. 32). On gnathopod 2 and pereopods 3–5, long, slender and curved distally, largest on gnathopod 2 and pereopods 3–4, with long curved brood setae, 20 setae on pereopod 4 plate and 12 on pereopod 5. STOMODEUM (Fig. 26). Extending to the 7 th pereonite. Male ( Allotype 7 mm, ZMH K-61210). Similar to female, but differing as follows: BODY. Smaller than female, and slightly less robust. LATERAL HEAD LOBE. Slightly narrower. ANTENNA 1 (Fig. 27). Peduncular article 1 stouter, more compact; callynophore stronger, flagellum 8-articulate, articles shorter, with calceoli. ANTENNA 2 (Fig. 27). Flagellum 12-articulate with calceoli. MAXILLA 1 (Fig. 28). Palp with 7 distal, conical spines; inner plate, distal projection acute. MAXILLIPED (Fig. 30). Inner plate, distal margin slightly more excavate. PEREOPODS (Fig. 34). Slightly more slender. GNATHOPOD 1 (Fig. 34). Coxa more strongly widened, distal width about 1.7 × proximal width; basis distinctly narrower than propodus, anterior margin lacking long setae. GNATHOPOD 2 (Fig. 34). Coxa slightly narrower and distally widening; propodus slender, length 2.5 × width, about ⅔ of carpus width, slightly expanded anteriorly, with straight hind margin, palm lacking concavity. COXA 3 (Fig. 34). Slightly narrower and widening distally. COXA 4 (Fig. 34). Slightly narrower, ventral margin more evenly convex and posteroventral lobe slightly smaller. COXA 5. Slightly more posterolobate. UROPOD 2 (Fig. 33). Peduncle shorter, about 1.13 × length of outer ramus, distolateral marginal spines of peduncle grouped at distal end; inner ramus distinctly shorter than outer; outer ramus distolateral spines stouter, bluntly rounded and more closely spaced distally, proximal spine acute (see p. 24). UROPOD 3 (Fig. 33). Peduncle shorter, 0.68 × length of biarticulated outer ramus. TELSON (Fig. 33). Cleft deeper (60%) than female. UROSOMITE 1 (Fig. 26). Dorsal boss more unevenly rounded and slightly more protruding upward. EPIMERON 3 (Fig. 26). Posteroventral corner slightly more subquadrate. Distribution Southern Ocean: Eastern Weddell Sea (De Broyer et al. 2006); Northwestern Weddell Sea: Powell Basin (De Broyer et al. 2006); Scotia Sea (this paper). Southwest Atlantic: Argentine Abyssal Basin (this paper). Depth range Bottom records: 2194 m (De Broyer et al. 2006) to 4586 m (this paper). Pelagic records: 3001 m (this paper). Remarks Abyssorchomene shannonae sp. nov. is easily differentiated from the smooth bodied Antarctic species A. scotianensis (Andres, 1983) in possessing a slight, but distinct dorsoposterior rounded hump on pereonites 1–7 and pleonites 1–2. The new species also differs from A. scotianensis by the very steeply angled, truncate bevel of the basis of pereopod 7 (vs weakly angled bevel) and the uropod 3 inner ramus length, which greatly exceeds the distal end of article 1 of the outer ramus (vs just reaching the distal end). Abyssorchomene shannonae sp. nov. is superficially very similar to A. abyssorum and A. patriciae sp. nov., as these species also possess the dorsoposterior hump on the pereonites and pleonites. However, A. shannonae differs from both these species in many characters. From A. abyssorum, it differs in the much greater distally widened coxa 1 (1.4–1.7× proximal width vs 1.2×); the (mature) female gnathopod 2 propodus which is broad, with a palm concavity (length less than 1.5 × width vs narrow, ~ 2.4× width and lacking concavity); the coxa 5 posteroventral lobe which is broadly rounded (vs narrowly rounded); the very strongly, steeply angled truncated bevel of the basis of pereopod 7 (vs weakly angled bevel) and the shorter uropod 3 inner ramus, which extends to about 20–25% of the length of article 2 of the outer ramus (vs extends to 70% of the length of article 2 of the outer ramus). Lastly, from A. patriciae sp. nov. it differs in the shape of the lateral head lobe, with dorsal and ventral margins nearly similar (vs dorsal and ventral margins not similar, dorsal margin strongly convex, ventral margin nearly straight); the female gnathopod 2 propodus with anterodistal margin broadly expanded and protruding, dactylus tiny, inserted near the bottom of the distal margin (vs anterodistal margin not expanded and protruding, dactylus large, inserted at the top of the distal margin); the coxa 5 posteroventral lobe which is broadly and evenly rounded (vs narrowly rounded, posterior margin straight posterodistally); the longer uropod 1 peduncle, which is 1.6 × the length of the outer ramus (vs 1.45 ×) and the length of the uropod 3 inner ramus, which reaches to 20–25% of article 2 of uropod 3 outer ramus (vs reaching to ~ 63% of article 2 of outer ramus).Published as part of Hendrycks, Ed A. & Broyer, Claude De, 2022, New deep-sea Atlantic and Antarctic species of Abyssorchomene De Broyer, 1984 (Amphipoda, Lysianassoidea, Uristidae) with a redescription of A. abyssorum (Stebbing, 1888), pp. 1-76 in European Journal of Taxonomy 825 on pages 53-67, DOI: 10.5852/ejt.2022.825.1829, http://zenodo.org/record/668662
Pseudfoxiphalus setosus Andres 1991
No full textPseudfoxiphalus setosus Andres, 1991 Andres, 1991: 187–196, figs. 1–5. De Broyer and JaŻdŻewski, 1993: 85. De Broyer and Rauschert, 1999: 286. Distribution: M Magellan Area: Chile, Seno de Reloncavi, Bahía Quillaipe, 41 ° 54 ’S 72 ° 75 ’W (sandy tidal flat) (HGA 91). Depth range: 0 m. Type-locality: Magellan Area: Chile, Seno de Reloncavi, Bahía Quillaipe, 41 ° 54 ’S 72 ° 75 ’W (sandy tidal flat) (HGA 91). Ecology: Collected from sandy tidal flat. Type material location: ZMH, Hamburg. Remarks: Since Andres (1991) described and illustrated the genus Pseudfoxiphalus, no other records or species were found.Published as part of Alonso, Gloria M., Pina, De, Rauschert, Martin & Broyer, Claude De, 2008, A catalogue of the Antarctic and sub-Antarctic Phoxocephalidae (Crustacea: Amphipoda: Gammaridea) with taxonomic, distribution and ecological data, pp. 1-40 in Zootaxa 1752 on page 27, DOI: 10.5281/zenodo.18174
Pseudfoxiphalus setosus Andres 1991
No full textPseudfoxiphalus setosus Andres, 1991 Andres, 1991: 187–196, figs. 1–5. De Broyer and JaŻdŻewski, 1993: 85. De Broyer and Rauschert, 1999: 286. Distribution: M Magellan Area: Chile, Seno de Reloncavi, Bahía Quillaipe, 41 ° 54 ’S 72 ° 75 ’W (sandy tidal flat) (HGA 91). Depth range: 0 m. Type-locality: Magellan Area: Chile, Seno de Reloncavi, Bahía Quillaipe, 41 ° 54 ’S 72 ° 75 ’W (sandy tidal flat) (HGA 91). Ecology: Collected from sandy tidal flat. Type material location: ZMH, Hamburg. Remarks: Since Andres (1991) described and illustrated the genus Pseudfoxiphalus, no other records or species were found.Published as part of Alonso, Gloria M., Pina, De, Rauschert, Martin & Broyer, Claude De, 2008, A catalogue of the Antarctic and sub-Antarctic Phoxocephalidae (Crustacea: Amphipoda: Gammaridea) with taxonomic, distribution and ecological data, pp. 1-40 in Zootaxa 1752 on page 27, DOI: 10.5281/zenodo.18174
A catalogue of the Antarctic and sub-Antarctic Phoxocephalidae (Crustacea: Amphipoda: Gammaridea) with taxonomic, distribution and ecological data
No full textAlonso, Gloria M., Pina, De, Rauschert, Martin, Broyer, Claude De (2008): A catalogue of the Antarctic and sub-Antarctic Phoxocephalidae (Crustacea: Amphipoda: Gammaridea) with taxonomic, distribution and ecological data. Zootaxa 1752: 1-40, DOI: 10.5281/zenodo.18174
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