Parschisturella pilot, Lowry & Kilgallen, 2014

Lowry, J. K. & Kilgallen, N. M., 2014, A generic review of the lysianassoid family Uristidae and descriptions of new taxa from Australian waters (Crustacea, Amphipoda, Uristidae), Zootaxa 3867 (1), pp. 1-92 : 57-61

Parschisturella pilot sp. nov.

( Figs 36–38 )

Types. Holotype, female, 12.0 mm, AM P.69452, north side of Cape Sorell , about 400 m outside Hannants Bight on a line toward large bluff of Ocean Beach, Tasmania, Australia (42°11.4’S 145°11.08'E), 30 m, sand, baited trap, 26 April 1991 – 27 April 1991, J.K. Lowry & S.J. Keable, Flying Scud [TAS-279] . Paratypes: 59 specimens, 7.5–12.4 mm, AM P.69451; 1 male, 12.1 mm, AM P.69453; 1 male, 9.2 mm, AM P.69454, same collection details as holotype.

Type locality. North side of Cape Sorell , about 400 m outside Hannants Bight on a line toward large bluff of Ocean Beach, Tasmania, Australia (42°11.4’S 145°11.08'E), 30 m depth .

Etymology. Named for the Macquarie Harbour pilot boat that put out on 23 July 1830 to guide the Government brig Tamar through the difficult harbour entrance known as 'Hells Gates'. When about half-way to the brig conditions deteriorated into a south-westerly gale and the pilot boat, with its nine crew, disappeared.

Additional material examined. New South Wales. 2 specimens, AM P.44241; 4 specimens, AM P.44252, off Wollongong (34°31.48’S 151°13.22’E), 200 m, Globigerina ooze, baited trap, 28–29 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-962, NSW-964]; 2 specimens, AM P.44265, off Wollongong (34°31.48’S 151°13.22’E), 200 m, 95.9% sand, 4.9% mud, baited trap, 27–28 March 1994, J.K. Lowry & K. Dempsey, MV Robin E [NSW-944]; 10 specimens, AM P.51107; 6 specimens, AM P.46906, off Wollongong (34°32.02’S 151°13.0’E), 200 m, baited trap, 6–7 May 1993, P. Freewater & party, MV Robin E [NSW-780, NSW-781]; 2 specimens, AM P.47020; 22 specimens, AM P.47034; 10 specimens, AM P.48186, off Wollongong (34°32.08’S 151°12.55’E), 200 m, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-797, NSW-798]; 10 specimens, AM P.44428; 1 specimens, AM P.44439, off Wollongong (34°32.38’S 151°15.0’E), 300 m, Globigerina ooze, baited trap, 7–8 May 1993, P. Freewater, S.J. Keable & W. Vader, MV Robin E [NSW-801, NSW-802]; 1 specimen, AM P.44455, off Wollongong (34°32.25’S 151°15.17’E), 300 m, Globigerina ooze, baited trap, 6–7 May 1993, P. Freewater & party, MV Robin E [NSW-783]; 3 specimens, AM P.48395, off Wollongong (34°26.42’S 150°58.03’E), 50 m, baited trap, 7–8 May 1993, P. Freewater & party, MV Robin E [NSW-792]; 26 specimens, AM P.48196, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 100 m, baited trap, 8–9 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-984]; 17 specimens, AM P.48423; 1 specimen, AM P.48411, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 100 m, baited trap, 9–10 September 1994, J.K. Lowry & K. Dempsey, MV Carrie Ann [NSW-1006, NSW-1007]; 14 specimens, AM P.55967, north-east of Coffs Harbour (30°15.93’S 153°21.9’E), 92.7 m, baited trap, 11–12 August 1993, P.B. Berents & R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-870]; 85 specimens, AM P.55978; 3 specimens, AM P.57648; 2 specimens, AM P.69459; 5 specimens, AM P.52649, north-east of Coffs Harbour (30°15.75’S 153°21.98’E), 98 m, baited trap, 12–13 August 1993, P.B. Berents & R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-885–NSW-887]; 55 specimens, AM P.58467, north-east of Coffs Harbour (30°14.63’S 153°27.68’E), 199 m, baited trap, 12–13 August 1993, P.B. Berents & R. T. Springthorpe & W. Vader, MV Cheryl Lee [NSW-884]; 1 specimen, AM P.69458, east of Long Reef (33°43'S 151°46'E to 33°44'S 151°46'E), 174 m, epibenthic sled, 20 December 1985, J.K. Lowry & R. T. Springthorpe , FRV Kapala [K85-21-08].

Queensland. many specimens, AM P.69460, east of Fitzroy Reef (23°26.16’S 152°28.46’E), 400 m, baited trap, 16–17 June 1993, J.K. Lowry, P. Freewater & R. T. Springthorpe , MV Reefknot [QLD-963/ SEAS] .

Tasmania. 1 specimen, AM P.50826, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’ S 148°03.45’E), 100 m, baited trap, 16–17 April 1993, J.K. Lowry & P. Freewater, MV Tasmanian Enterprise [TAS-354]; 1 specimen, AM P.51321, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’ S 148°03.45’E), 100 m, baited trap, 9–10 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-409]; many specimens, AM P.69455, north side of Cape Sorell , about 80 m outside Hannants Bight (42°11.5’S 145°11.0’E), 18 m, sand and detritus, baited trap, 26–27 April 1991, J.K. Lowry & S.J. Keable, Flying Scud [TAS-277]; 2 specimens, AM P.69456, D'Entrecasteaux Channel, north end of Tower Bay , 400 m off small shingle beach (43°23.6’S 147°02.4’E), 40 m, baited trap, 20–21 April 1991, J.K. Lowry & S.J. Keable, Flying Scud [TAS-222]; 1 specimen, AM P.69457, east of Fortescue Bay, north of Hippolyte Rocks (43°06.7’S 148°03.45’E), 100 m, baited trap, 8–9 April 1994, J.K. Lowry & K. Dempsey, MV Martrudan [TAS-390] .

Description. Based on holotype, female, 12.0 mm, AM P.69452. Head, lateral cephalic lobes small, subtriangular, apically subacute. Antenna 1 peduncular article 1 without anterodistal lobe; accessory flagellum not forming cap, terminal article not offset; primary flagellum with strong 2-field callynophore; robust setae absent from proximal articles; calceoli absent. Antenna 2 peduncular article 3 short; articles 3 to 5 not enlarged; flagellum short; calceoli absent. Labrum, epistome and upper lip separate; epistome less produced than upper lip, straight; upper lip produced, acute apically. Mandible incisor large, left and right symmetrical; molar with asymmetrically reduced column, proximally setose, distally triturating; article 2 margins subparallel. Maxilla 1 outer plate setaltooth 7 present, left and right symmetrical, cuspidate distally along inner margin; palp distal margin with apical robust setae. Maxilliped outer plate with 5 long apical robust setae, medial margins crenulated.

Gnathopod 1 weakly subchelate; coxa large, about as long as coxa 2, distally subovate; basis densely setose along anterior margin; ischium long (length 2 × to 4 × breadth); carpus long (length 2 to 4 × breadth), longer than propodus, without posterior lobe; propodus margins subparallel, palm slightly to moderately acute, entire, straight; dactylus simple, with large subapical spine. Gnathopod 2 propodus palm slightly obtuse; dactylus fitting palm. Pereopod 4 coxa with a well-developed posteroventral lobe. Pereopod 5 coxa without distinct lateral ridge; basis about as long as broad or longer than broad, posterior margin weakly 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, with tiny basal notch and weak spine. Urosomite 1 not projecting over urosomite 2, with rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 peduncle without dorsolateral flange; outer ramus article 2 short, with plumose setae on both rami. Telson deeply cleft , without dorsal robust setae, with 2–3 apical robust setae on each lobe.

Depth range. 18–400 m.

Remarks. See remarks under Parschisturella medora .

Distribution. Australia. New South Wales: north-east of Coffs Harbour; east of Long Reef; off Wollongong. Queensland: east of Fitzroy Reef. Tasmania: east of Fortescue Bay; D'Entrecasteaux Channel; north of Hippolyte Rocks; north side of Cape Sorell.

Figures

FIGURE 36. Parschisturella pilot sp. nov., holotype, female, 12.0 mm, AM P.69452, from the north side of Cape Sorrell, Tasmania, Australia.

FIGURE 37. Parschisturella pilot sp. nov., holotype, female, 12.0 mm, AM P.69452, from the north side of Cape Sorell, Tasmania, Australia. Scale bars: 0.2 mm.

FIGURE 38. Parschisturella pilot sp. nov., holotype, female, 12.0 mm, AM P.69452, from the north side of Cape Sorell, Tasmania, Australia. Scale bars: gnathopods, pereopods, 0.5 mm; uropods, telson, 0.2 mm.