Kapalana stebbingi Berents &amp; Lowry 2018, sp. nov.
Creators: name: Berents, Penelope B.
name: Lowry, J. K.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Ischyroceridae
Kapalana
Kapalana stebbingi

description: <i>Kapalana stebbingi</i> sp. nov. Figs 16–19 <i>Cerapus abditus</i>.— Stebbing, 1910: 616, pl. 5a. <b>Holotype</b>, male, 8.9 mm, AM P.51210, east of Port Jackson, New South Wales, Australia (33°52'S 151°23'E), mud, 80 m, FRV <i>Kapala</i>, 27 October 1980, stn K-80-20-11. <b>Paratypes</b>: 1 female, ovigerous, 6.4 mm, AM P.51211; 1 male, 6.5 mm, AM P.99058; 1 male, 5.7 mm, AM P.99059; 1 male, 4.9 mm, AM P.99060; many specimens, AM P.99061; all same data as holotype. Many specimens, AM P.99062, south-east of Broken Bay, New South Wales, Australia, (33°36'S 151°30'E), trawl, 71–75 m, FRV <i>Kapala</i>, 10 February 1986, K86-01-02; 1 male, 1 female, MV J17211, south of Point Hicks, Victoria, Australia (38°14'48"S 149°09'18"E), WHOI epibenthic sled, 200 m, M.F. Gomon, 24 July 1986, Slope 41. <b>Additional material</b>. Many specimens, AM P.99063, southeast of Broken Bay, New South Wales, Australia, (33°36'S 151°30'E), trawl, 71–75 m, FRV <i>Kapala,</i> 10 February 1986; 1 female, AM P.2526; 1 male, 1 female, AM P.2527; 3–4 km off BotanY BaY, New South Wales, Australia, (34°05'S 151°15'E), mud, 91–95 m, E. R. Waite on HMCS <i>Thetis,</i> 11 March 1898, stn 37. 1 male, AM P.2528, 9– 12 km off Cape Three Points, New South Wales, Australia, (33°32'S 151°32'30"E), trawl, sticky mud and shell, 75–91 m, E. R. Waite on HMCS <i>Thetis</i>, 25 February 1898, stn 13; 1 male, AM P.99064, east of Broken Bay, New South Wales, Australia, (33°35'S 151°41'E), 135 m, FRV <i>Kapala</i>, 10 February 1986, K86-01-03; 2 specimens, AM P.99065, east of Long Reef Point, New South Wales, Australia, (33°46'S 151°43'E), dredge, 176 m, FRV <i>Kapala</i>, 5 December 1977, K77-23-01. <b>Type locality</b>. East of Port Jackson, New South Wales, Australia (33°52'S 151°23'E). <b>Etymology</b>. Named for T.R.R. Stebbing, who first illustrated this species. <b>Description</b>. Based on holotype male, 8.9 mm, AM P.51210. <b>Head</b>. Rostrum long, length 0.3 × head, evenly tapered, apically acute; lateral cephalic lobe with ventral corner rounded, subocular margin deeply recessed, reaching beyond eye, ventral margin sloping, posterior margin sloping. <i>Antenna 1</i> long, length 0.6 × body length; peduncle with scales; peduncular article 1 shorter than article 3, length 0.6 × peduncular article 3, not produced anterodistally and anteromedially, with strong acute projection along posterior margin, posterodistal corner produced; peduncular article 2 anterodistal corner without distal projection; flagellum 9-articulate; article 1 long. <i>Antenna 2</i> length 1.1 × antenna 1; flagellum 7-articulate. <i>Epistome and upper lip</i> fused, produced, broad base, apically acute. <b>Pereon</b>. <i>Pereonite 1</i> with lateral keel, without sternal keel. <i>Pereonites 2–3</i> without sternal keel. <i>Pereonite 5</i> length 1.8 × depth. <i>Gnathopod 1</i> simple; coxa fused to pereonite 1, without anteroventral lobe; basis length 2.2 × depth; carpus very broad, length 2.2 × depth with setose posterior lobe, propodus palm extremely acute. <i>Gnathopod 2</i> carpochelate; coxa fused to pereonite 2, length 1.3 × depth, without anteroventral lobe or cusp; basis long, slender, length 3 × breadth, basis without anteroproximal group of long slender setae, basis without anteroproximal bulge; carpus very long, length 1.9 × breadth, slender, palm straight, anterodistal tooth small, located near articulation with propodus, posterodistal tooth poorlY defined; propodus slender, slightlY curved, length 5.5 × width, with proximal tooth on posterior margin, posterodistal corner minutely rugose with 1 tooth; dactylus length 0.5 × propodus. <i>Pereopod 3</i> coxa not fused to pereonite 3, without anteroventral lobe, length 1.7 × depth; basis, length 2.4 × breadth, with proximal, subquadrate anterodorsal corner, with plumose setal group and simple setae along anterior margin, without denticles along anterior margin; ischium long, length 3.9 × breadth; merus length 1.1 × breadth; short; without ridges. <i>Pereopod 4</i> coxa not fused to pereonite 4, length 2.3 × depth, with anterior lobe separated from an anteroventral lobe; basis length 1.8 × breadth, with plumose setae along entire anterior margin; ischium long, length 2.5 × breadth. <i>Pereopod 5</i> coxa, length 1.5 × depth, with patches of small setae, with setae along ventral margin; merus with anterior lobe extending beyond anterior margin of carpus, posterior lobe with 1 simple seta; propodus with 2 setae along posterior margin; dactylus short, uncinate with 1 accessory hook. <i>Pereopod 6</i> coxa with setal fringe ventrally, with patch of small setae near posterior margin; basis with patch of small setae near anterior margin; merus length 2.2 × breadth; dactylus short, uncinate, with 1 accessory hook. <i>Pereopod 7</i> coxa with posterodorsal lobe, with patch of small setae; merus length 2.5 × breadth; dactylus short, uncinate, with 1 accessory hook. <b>Pleon</b>. <i>Pleopods 1–3</i> biramous, decreasing in size anteroposteriorly. <i>Pleopod 1</i> inner ramus 7-articulate; outer ramus 4-articulate, article 1 with straight medial margin. <i>Pleopod 2</i> inner ramus reduced, 1-articulate; outer ramus, broad, 1-articulate. <i>Pleopod 3</i> inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate. <i>Uropod 1</i> biramous; peduncle length 1.4 × outer ramus; rami with distoventral fan of robust setae; outer ramus with lateral row of denticles, without medial setae, with 8 lateral setae, with large apical robust seta and smaller slender setae; inner ramus, length 0.6 × outer ramus, without medial setae, with 4 lateral setae. <i>Uropod 2</i> uniramous, peduncle, length 2.8 × breadth, 4.4 × length of ramus; ramus small with 4 denticles and 1 slender apical seta. <i>Uropod 3</i> uniramous, peduncle length 1.8 × breadth; ramus with 2 curved hooks. <i>Telson</i> length 0.5 × breadth, moderately cleft (54 %), each lobe with 20–23 anteriorly directed hooks in 2 rows. <b>Tube</b>. Encrusted with sand grains and pieces of shell. Tubes of juveniles attached in a ring, circling the tube of adult female. <b>Habitat</b>. Sublittoral and continental shelf (71–200 m depth). <b>Remarks</b>. The shape of gnathopod 2 basis, propodus and carpus changes as males grow, with the propodus becoming slender and the basis carpus becoming much longer than gnathopod 2 is subchelate. The proximal tooth on posterior margin is not prominent in males smaller than 5 mm. The carpus posterior margin is excavate in males 5.5 to 7 mm. <i>Kapalana stebbingi</i> is the only species in the species group with antenna 1 peduncular article 1 with a strong subacute projection along the posterior margin, gnathopod 1 simple, the dactylus of pereopods 5–7 bearing 1 accessory hook, gnathopod 2 with a very long and slender carpus, the posterior margin of the propodus bearing a proximal tooth and a straight palm (all other species have an excavate palm). <b>Distribution</b>. Australia. <i>New South Wales</i>: off Cape Three Points; off Botany Bay (Stebbing, 1910); east of Port Jackson; east of Long Reef; off Broken BaY. <i>Victoria</i>: south of Point Hicks.
description: Published as part of <i>Berents, Penelope B. &amp; Lowry, J. K., 2018, The New Crustacean Amphipod Genus Kapalana from Australian Waters (Senticaudata, Ischyroceridae, Ischyrocerinae, Cerapodini), pp. 391-421 in Records of the Australian Museum 70 (4)</i> on pages 410-413, DOI: 10.3853/j.2201-4349.70.2018.1711, http://zenodo.org/record/5237503
description: {"references": ["Stebbing, T. R. R. 1910. Scientific results of the trawling expedition of H. M. C. S. \" Thetis \". Crustacea. Part V. Amphipoda. Australian Museum Memoir 4: 567 - 658, pls XLVII - LX. https: // doi. org / 10.3853 / j. 0067 - 1967.4.1910.1508"]}