A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae) Author Lowry, J. K. Author Kilgallen, N. M. text Zootaxa 2014 2014-09-26 3867 1 1 92 journal article 3965 10.11646/zootaxa.3867.1.1 e5bb465f-e713-45c1-8e0f-2c6125494b44 1175-5326 5585734 B7C6EC5F-5AA3-43B1-BD3D-D8111E0EC3A7 Parschisturella martrudan sp. nov. ( Figs 30–32 ) Types. Holotype , female, 12.0 mm, AM P.69042, east of Broken Bay , New South Wales , Australia ( 33°37'S 152°04'E to 33°39’S 152°02’E), 896–923 m , dredge, 10 December 1980 , R . T . Springthorpe, FRV Kapala [K80-20- 09] . Paratypes : 1 male , 10.2 mm , AM P.69044, north-east of Port Jackson , New South Wales , Australia ( 33°41’S 152°00’E to 33°44’S 151°57’E), 820–888 m , beam trawl, 11 February 1986 , R . T . Springthorpe, FRV Kapala [K86-01-07] ; 1 female , 12.8 mm , AM P.69045, east of Broken Bay , New South Wales , Australia ( 33°30’S 152°09’E to 33°33’S 152°11’E), 922–1015 m , beam trawl, 12 February 1986 , R . T . Springthorpe, FRV Kapala [K86-01-08] . Type locality. East of Broken Bay , New South Wales , Australia ( 33°37'S 152°04'E to 33°39’S 152°02’E ), 896–923 m depth . FIGURE 30. Parschisturella martrudan sp. nov. , holotype, female, 12.0 mm, AM P.69042, from east of Broken Bay, New South Wales, Australia. Additional material described. New South Wales . 1 specimen , AM P.44445, off Wollongong ( 34°32.25'S 151°15.16'E ), 300 m , baited trap , 6 May 1993 7 May 1993 , P. Freewater & party, MV Robin E [NSW-782] ; 3 specimens , AM P.69041, east of Broken Bay ( 33°31’S 152°08’E to 33°33’S 152°07’E), 914 m , 2.5 m sled dredge, 10 December 1980 , R . T . Springthorpe , FRV Kapala [K80-20-08] ; 2 females , AM P.69043, east of Broken Bay ( 33°37’S 152°04’E to 33°39’S 152°02’E), 896–923 m , dredge, 10 December 1980 , R . T . Springthorpe , FRV Kapala [K80-20-09] ; 1 male , AM P.69046, east of Broken Bay ( 33°30’S 152°09’E to 33°33’S 152°11’E), 922–1015 m , beam trawl, 12 February 1986 , R . T . Springthorpe , FRV Kapala [K86-01-08] ; 1 specimen , AM P.69047, east of Broken Bay ( 33°30’S 152°12’E to 33°33’S 152°09’E), 1053–1066 m , beam trawl, 12 February 1986 , R . T . Springthorpe , FRV Kapala [K86-01-10] . Tasmania . 16 specimens , AM P.51146; 8 specimens , AM P.51164, east of Fortescue Bay ( 43°08.97’S 148°15.37’E ), 1000 m , baited trap , 16–17 April 1993 , J.K. Lowry & P. Freewater , MV Tasmanian Enterprise [TAS-365 & TAS-367]; 539 specimens , AM P.51176; 503 specimens , AM P.51179, east of Fortescue Bay ( 43°08.97’S 148°15.37’E ), 1000 m , baited trap , 17–18 April 1993 , J.K. Lowry & P. Freewater , MV Tasmanian Enterprise [TAS-383 & TAS-384]; 5 specimens , AM P.51310; 10 specimens , AM P.51313; 41 specimens , AM P.51381; 180 specimens , AM P.57977, east of Fortescue Bay ( 43°08.97’S 148°15.37’E ), 1000 m , baited trap , 8–9 April 1994 , J.K. Lowry & K. Dempsey , MV Martrudan [TAS-401, TAS-403 & TAS-422-423]; 43 specimens , AM P.51357, east of Fortescue Bay ( 43°08.97’S 148°15.37’E ), 1000 m , baited trap , 9–10 April 1994 , J.K. Lowry & K. Dempsey , MV Martrudan [TAS-419]; 315 specimens , AM P.51388; 1 specimen , AM P.56090, east of Fortescue Bay ( 43°08.97’S 148°15.37’E ), 1000 m , baited trap , 9–10 April 1994 , J.K. Lowry & K. Dempsey , MV Martrudan [TAS-421]; many specimens, AM P.73705, 76.8km south-south-east of South East Cape , Main Pedra Hill ( 44°15.6'S 147°07.8'E ), 1312 m , baited trap , 21–24 January 1997 , CSIRO party, FRV Southern Surveyor [SS01/97/ 08]. 4 specimens , NMV J67753 , 48 km east-north-east of Cape Tourville ( 42°00.25'S 148°43.55'E to 41°57.77'S 148°42.08'E), 1264– 1130 m , gravel with lumps of sandy mud aggregate, WHOI epibenthic sled, 30 October 1988 , G.C.B. Poore et al., RV Franklin [ SLOPE 81 ]; 19 specimens , NMV J67754 , off Freycinet Peninsula ( 42°2.20 'S 148°38.70'E ), 800 m , coarse shelly sand, WHOI epibenthic sled, 27 July 1986 , M.F. Gomon et al., RV Franklin [ SLOPE 45 ] . Victoria . 2 specimens , NMV J67755 , south of Point Hicks ( 38°19.60'S 149°24.30'E ), 930 m , rock, rubble, clay, sand, biogenic sediment, WHOI epibenthic sled, 23 July 1986 , M.F. Gomon et al., RV Franklin [ SLOPE 33 ] . Etymology. Named for the beautiful crayfishing boat MV Martrudan which collected many of the amphipods used in this and other studies of Australian lysianassoid amphipods; used as a noun in apposition. Description. Based on holotype , female, 12.0 mm, AM P.69042. Head, lateral cephalic lobes subtriangular, apically subacute. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, 5-articulate, terminal article not offset; primary flagellum with strong 1-field callynophore; robust setae absent from proximal articles; calceoli absent. Antenna 2 peduncular article 3 short, articles 3 to 5 not enlarged, brush setae absent; flagellum short; calceoli absent. Labrum, epistome and upper lip separate; epistome less produced than upper lip, straight; upper lip produced, strongly acute apically. Mandible incisor large, left and right symmetrical; molar with asymmetrically reduced column, proximally setose, distally triturating; palp attached about midway, article 2 margins subparallel, article 3 blade-like. Maxilla 1 outer plate setal-tooth 7 present, left and right symmetrical, cuspidate distally along inner margin ; palp distal margin with apical robust setae. Maxilliped outer plate with one slender and one broad apical robust setae. Gnathopod 1 simple; coxa large, about as long as coxa 2, subrectangular with straight anterior margin; basis moderately to densely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), slightly longer than propodus, without posterior lobe; propodus margins tapering distally; dactylus simple. Gnathopod 2 propodus palm transverse, dactylus distinctly shorter than palm . Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis about as long as broad, posterior margin weakly or not serrate. Pereopod 7 basis posterodistally produced less than halfway along merus. Pleonite 3 without mid-dorsal carina, not produced dorsodistally, posterodorsal margin not produced. Epimeron 3 posterior margin smooth, posteroventral corner acutely produced, forming weak spine. Urosomite 1 not projecting over urosomite 2, dorsally rounded . Uropod 2 inner ramus with slight constriction . Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with few plumose setae on inner ramus. Telson moderately cleft , without dorsal robust setae, with 2 apical robust setae on each lobe. Sexually dimorphic characters. Based on paratype male, 10.2 mm , AM P.69044. Antenna 1 primary flagellum with strong 2-field callynophore; robust setae absent from proximal articles; calceoli present. Antenna peduncular brush setae present; calceoli present. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with plumose setae on both rami. Depth range. 820–1312 m . Remarks. Parschisturella martrudan and P. simplex appear to be the only species with truly simple first gnathopods. In Parschisturella martrudan the cusps on the medial margin of setal-tooth 7 are distal in P. martrudan (along most of the medial margin in P. simplex ); the gnathopod 2 dactylus is shorter than the palm in P. martrudan (fitting the palm in P. simplex ); the dorsal margin of urosomite 1 is evenly rounded in P. martrudan (straight in P. simplex ) and the telson is moderately cleft (deeply cleft in P. simplex ). FIGURE 31. Parschisturella martrudan sp. nov , holotype, female, 12.0 mm, AM P.69042, from east of Broken Bay; paratype, male, 10.2 mm, AM P.69044, from north-east of Port Jackson, New South Wales, Australia. Scale bars: 0.2 mm. FIGURE 32. Parschisturella martrudan sp. nov. , holotype, female, 12.0 mm, AM P.69042, from east of Broken Bay; paratype, male, 10.2 mm, AM P.69044, from north-east of Port Jackson, New South Wales, Australia. Scale bars: gnathopods, pereopods, 0.5 mm; uropods, telson, 0.2 mm. Distribution. Australia . New South Wales : east of Broken Bay; off Wollongong. Tasmania : east of Fortescue Bay; south-south-east of South East Cape, Main Pedra Hill; east-north-east of Cape Tourville. Victoria : south of Point Hicks.