Kapalana stebbingi, Berents & Lowry, 2018

Berents, Penelope B. & Lowry, J. K., 2018, The New Crustacean Amphipod Genus Kapalana from Australian Waters (Senticaudata, Ischyroceridae, Ischyrocerinae, Cerapodini), Records of the Australian Museum 70 (4), pp. 391-421 : 410-413

publication ID

https://doi.org/ 10.3853/j.2201-4349.70.2018.1711

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scientific name

Kapalana stebbingi

sp. nov.

Kapalana stebbingi sp. nov.

Figs 16–19 View Figure 16 View Figure 17 View Figure 18 View Figure 19

Cerapus abditus .— Stebbing, 1910: 616, pl. 5a.

Holotype, 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 Kapala , 27 October 1980, stn K-80-20-11 GoogleMaps . Paratypes: 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 GoogleMaps P.99062, south-east of Broken Bay , New South Wales, Australia, (33°36'S 151°30'E), trawl, 71–75 m, FRV Kapala , 10 February 1986, K86-01-02 GoogleMaps ; 1 male, 1 female, MV J17211 View Materials , south of Point Hicks , Victoria, Australia (38°14'48"S 149°09'18"E), WHOI GoogleMaps epibenthic sled, 200 m, M.F. Gomon, 24 July 1986, Slope 41.

Additional material. Many specimens, AM P.99063, southeast of Broken Bay , New South Wales, Australia, (33°36'S 151°30'E), trawl, 71–75 m, FRV Kapala , 10 February 1986 GoogleMaps ; 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 Thetis, 11 March 1898 GoogleMaps , 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 Thetis, 25 February 1898 GoogleMaps , stn 13; 1 male, AM P.99064, east of Broken Bay , New South Wales, Australia, (33°35'S 151°41'E), 135 m, FRV Kapala , 10 February 1986 GoogleMaps , 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 Kapala , 5 December 1977 GoogleMaps , K77-23-01.

Type locality. East of Port Jackson , New South Wales, Australia (33°52'S 151°23'E) GoogleMaps .

Etymology. Named for T.R.R. Stebbing, who first illustrated this species.

Description. Based on holotype male, 8.9 mm, AM P.51210.

Head. 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. Antenna 1 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. Antenna 2 length 1.1 × antenna 1; flagellum 7-articulate.

Epistome and upper lip fused, produced, broad base, apically acute.

Pereon. Pereonite 1 with lateral keel, without sternal keel. Pereonites 2–3 without sternal keel. Pereonite 5 length 1.8 × depth.

Gnathopod 1 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. Gnathopod 2 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.

Pereopod 3 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. Pereopod 4 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. Pereopod 5 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. Pereopod 6 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. Pereopod 7 coxa with posterodorsal lobe, with patch of small setae; merus length 2.5 × breadth; dactylus short, uncinate, with 1 accessory hook.

Pleon. Pleopods 1–3 biramous, decreasing in size anteroposteriorly. Pleopod 1 inner ramus 7-articulate; outer ramus 4-articulate, article 1 with straight medial margin. Pleopod 2 inner ramus reduced, 1-articulate; outer ramus, broad, 1-articulate. Pleopod 3 inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate. Uropod 1 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. Uropod 2 uniramous, peduncle, length 2.8 × breadth, 4.4 × length of ramus; ramus small with 4 denticles and 1 slender apical seta. Uropod 3 uniramous, peduncle length 1.8 × breadth; ramus with 2 curved hooks. Telson length 0.5 × breadth, moderately cleft (54 %), each lobe with 20–23 anteriorly directed hooks in 2 rows.

Tube. Encrusted with sand grains and pieces of shell. Tubes of juveniles attached in a ring, circling the tube of adult female.

Habitat. Sublittoral and continental shelf (71–200 m depth).

Remarks. 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.

Kapalana stebbingi 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).

Distribution. Australia. New South Wales: off Cape Three Points; off Botany Bay ( Stebbing, 1910); east of Port Jackson; east of Long Reef; off Broken BaY. Victoria: south of Point Hicks.


Australian Museum


University of Montana Museum


Woods Hole Oceanographic Institution


Departamento de Geologia, Universidad de Chile














Kapalana stebbingi

Berents, Penelope B. & Lowry, J. K. 2018

Cerapus abditus

Stebbing, T 1910: 616
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