Ulladulla selje, Lowry, J. K. & Kilgallen, N. M., 2015

Lowry, J. K. & Kilgallen, N. M., 2015, Debroyerella gen. nov. and Ulladulla gen. nov., two new lysianassoid genera (Crustacea, Amphipoda, Lysianassoidea), Zootaxa 3920 (1), pp. 153-162 : 157-160

publication ID	https://doi.org/ 10.11646/zootaxa.3920.1.7
publication LSID	lsid:zoobank.org:pub:58A3F138-7ED7-490C-B3F1-7D7CB9F4E4E2
DOI	https://doi.org/10.5281/zenodo.6111805
persistent identifier	https://treatment.plazi.org/id/F7358785-FFB5-0B11-FF47-5A76FD60E01F
treatment provided by	Plazi
scientific name	Ulladulla selje
status	sp. nov.

Treatment

Ulladulla selje sp. nov.

( Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 )

Type material. Holotype female, 5.6 mm, NMV J 67579 View Materials , 26 km south-west of Cape Otway, Victoria, western Bass Strait (39°01'S 143°22'E), 84 m, medium sand, naturalists’ dredge, 31 January 1981, M. Gomon et al., FRV Hai Kung (BSS-120D). Paratypes: 1 male, 4.8 mm, NMV J67580 View Materials ; 22 specimens, 3.6–6.2 mm, NMV J67581 View Materials , both with same collection data as holotype.

Additional material examined. 3 specimens, NMV J 67582 View Materials , 49 km west-north-west of Stokes Point, King Island, western Bass Strait (40°04’S 143°22’E), 112 m, medium sand, Smith-McIntyre grab, 11 October 1980, G.C.B. Poore, HMAS Kimbla (BSS-90G); 1 specimen, NMV J 67583 View Materials , 70 km south-west of Cape Otway, Victoria, western Bass Strait (39°26.3'S 143°06.8'E), 115 m, sand, WHOI epibenthic sled, 21 November 1981, R. Wilson, RV Tangaroa (BSS-194S); 1 specimen, NMV J 67584 View Materials , 31 km south-south-west of Cape Otway, Victoria, western Bass Strait (39°08’S 143°24’E), 77 m, medium sand, naturalists’ dredge, 8 October 1980, G.C.B. Poore, HMAS Kimbla (BSS-56D); 3 specimens, NMV J 67585 View Materials , 25 km east-south-east of Cape Otway, Victoria, central Bass Strait (39°59’S 143°47’E), 81 m, sand, 50% carbonate, Smith-McIntyre Grab, 7 October 1980, G.C.B. Poore, HMAS Kimbla (BSS 49G); 3 specimens, NMV J 67586 View Materials , 63 km south-south-west of Cape Otway, Victoria, western Bass Strait (39°22’S 143°10’E), 99 m, medium sand, carbonate, pipe dredge, 10 October 1980, G.C.B. Poore, HMAS Kimbla (BSS-71D); 3 specimens, NMV J 67587 View Materials , 31 km south-south-west of Cape Otway, western Bass Strait (39°08'S 143°24'E), 77 m, medium sand, Smith-McIntyre grab, 8 October 1980, G.C.B. Poore, HMAS Kimbla (BSS-56G); 1 specimen, NMV J 67588 View Materials , 25 km east-south-east of Cape Otway, Victoria, central Bass Strait (39°59’S 143°47’E), 81 m, sand, 50% carbonate, naturalists’ dredge, 7 October 1980, G.C.B. Poore, HMAS Kimbla (BSS-49D); 17 specimens, NMV J 67589 View Materials , 31 km south-west of Cape Otway, Victoria, western Bass Strait (39°01.0'S 143°15.2'E), 84 m, medium sand, naturalists’ dredge, 31 January 1981, M. Gomon et al., FRV Hai Kung (BSS-121D).

Etymology. Named for the SS Selje , wrecked off Cape Otway in 1929 after colliding with the SS Kaituna; used as a noun in apposition.

Description. Based on holotype, female, 5.6 mm, NMV J67579 View Materials .

Head eyes unknown; lateral cephalic lobe subtriangular, apically subacute. Antenna 1 accessory flagellum vestigial, not forming cap, 2-articulate, terminal article not offset; primary flagellum without 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, straight; upper lip not produced. Mandible molar weakly columnar, with subtriangular fully triturating surface; lacinia mobilis a long, slender apically cuspidate robust seta; palp attached distally. Maxilla 1 outer plate setal-tooth 7 cuspidate distally along inner margin; palp distal margin with apical robust setae. Maxilla 2 inner and outer plates broad, inner plate slightly shorter than outer plate. Maxilliped inner plate subrectangular, with 4 apical nodular setae; outer plate subovate with 2 short, broad apical robust setae, and short nodular robust setae along inner margin; palp 4-articulate, article 4 well developed, with unguis.

Gnathopod 1 subchelate; coxa large, about as long as coxa 2, distally subovate; basis moderately setose along anterior margin; ischium short; carpus long (2.0 × longer than broad), longer than propodus, without posterior lobe; propodus small, palm acute, entire, straight. Gnathopod 2 minutely subchelate; propodus palm transverse. Pereopods 3-4 propodus with large posterodistal locking seta. Pereopod 5 basis about as long as broad, not posteroproximally excavate, posterior margin strongly serrate. Pereopod 6 basis posterior margin strongly serrate. Pereopod 7 basis posterior margin strongly serrate.

Epimeron 3 posterior margin smooth, posteroventral corner acutely produced. Urosomite 1 with slight dorsal notch and rounded boss. Uropod 2 inner ramus without constriction. Uropod 3 peduncle without dorsolateral flange; inner and outer rami well developed, with plumose setae on both rami; inner ramus slightly shorter than outer ramus, outer ramus article 2 short. Telson deeply cleft (about 80%), with 2 dorsal robust setae per lobe, and 2 apical robust setae on each lobe.

Sexually (sexually dimorphic characters). Based on paratype male, 4.8 mm, NMV J67580 View Materials . Antenna 1 primary flagellum with weak 1-field callynophore (aesthetascs present along the length of the flagellum); calceoli absent. Antenna 2 flagellum short, calceoli present.

Depth range. 77– 115 m.

Distribution. Australia. Bass Strait (this study).