Patonga nona, Lowry & Kilgallen, 2014

Lowry, J. K. & Kilgallen, N. M., 2014, New tryphosine amphipods from Australian waters (Crustacea, Amphipoda, Lysianassoidea, Lysianassidae, Tryphosinae), Zootaxa 3844 (1), pp. 1-64 : 41-44

publication ID 10.11646/zootaxa.3844.1.1

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scientific name

Patonga nona

sp. nov.

Patonga nona sp. nov.

( Figs 29–31 View FIGURE 29 View FIGURE 30 View FIGURE 31 )

Types. Holotype female, 3.3 mm, AM P.69443, east of Long Reef Point , New South Wales, Australia (33°46’S 151°43’E), 176 m, dredge, 5 December 1977, FRV Kapala stn K77-23-01 GoogleMaps . Paratypes: 1 female, 3.2 mm, AM P.69444, same collection data as holotype GoogleMaps ; 1 female, 3.4 mm, AM P.69445, Cape Banks , New South Wales, Australia (34°00’S 151°16’E) 65–70 m, Smith-McIntyre Grab, 29 October 1990 – 14 November 1990, The Ecology Lab for RMI/Pioneer Project stn 3-185 GoogleMaps .

Type locality. East of Long Reef Point , New South Wales, Australia (33°46’S 151°43’E), 176 m depth GoogleMaps .

Etymology. Named for the sailing vessel Nona, wrecked in 1857 in Broken Bay during a gale; used as a noun in apposition.

Description. Based on holotype female, 3.3 mm, AM P.69443. Head lateral cephalic lobe margins straight dorsally, ventrally sinusoidal, apically acute. Antenna 1 accessory flagellum not forming operculum, 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/upper lip separate; epistome produced equally with upper lip, slightly concave; upper lip not produced. Mandible molar with reduced column and reduced triturating surface; palp attached midway. 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 basis without recurved hook.

Pereonites 1–7 dorsally smooth. Gnathopod 1 subchelate; coxa large, about as long as coxa 2, subrectangular with straight anterior margin; basis moderately setose along anterior margin; ischium short; carpus long, longer than propodus, without posterior lobe; propodus small, margins subparallel, sparsely setose along posterior margin, palm moderately acute, entire, straight. Gnathopod 2 propodus palm transverse. Pereopod 5 basis longer than broad, not posteroproximally excavate, posterior margin not serrate. Pereopod 7 basis posterodistally produced, not reaching merus; not posterodistally excavate.

Pleonites 1–3 without mid-dorsal carina, not produced dorsodistally. Epimeron 3 posterior margin smooth, posteroventral corner subquadrate. Urosomite 1 with slight notch. Uropod 3 peduncle without dorsolateral flange; inner and outer rami well developed, outer ramus article 2 short, with plumose setae on both rami. Telson deeply cleft, longer than wide, with 2 dorsal robust setae per lobe and 1 apical robust seta on each lobe.

Sexually dimorphic characters. Unknown.

Depth range. 65–176 m.

Distribution. Australia. Coast of New South Wales.


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