Kapalana maia, 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: 403-407

publication ID

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

publication LSID

lsid:zoobank.org:pub:F0306801-9E69-4BEA-A543-CD187EA33C57

persistent identifier

http://treatment.plazi.org/id/03F487D4-FF9A-FFDC-FC48-FBA24FC9FD9B

treatment provided by

Felipe

scientific name

Kapalana maia
status

sp. nov.

Kapalana maia   sp. nov.

Figs 9–11 View Figure 9 View Figure 10 View Figure 11

Holotype, male, 10.0 mm, MV J70540 View Materials , 60 km east of North Point , Flinders Island, Bass Strait, (39°41'42"S 148°39'30"E), naturalist’s dredge, 115 m, 27 March 1979, G. C. B. Poore on HMAS Kimbla, BSS 32 GoogleMaps   . Paratypes, female, 12.5 mm, MV J70541 View Materials   ; 2 males, 3 females, 2 juveniles, MV J13712 View Materials , same data as holotype GoogleMaps   . 1 male, 1 female, MV J11270 View Materials , 63 km east of North Point, Flinders Island, Bass Strait , (39°44'48"S 148°40'36"E), WHOI epibenthic sled, 124 m, 14 November 1981, R. S. Wilson, BSS 167 S GoogleMaps   ; 2 females, 2 juveniles, MV J1705, 25 km south of Cape Otway, Bass Strait , (39°06'00"S 143°35'48"E), grab, sled and trawl, 95 m, M.F. Gomon, 31 January1981, BSS 118 GoogleMaps   .

Additional material examined. One female, MV J1706, 25 km south of Cape Otway, Bass Strait , (39°06'00"S 143°35'48"E), grab, sled and trawl, 95 m, M.F. Gomon, 31 January1981, BSS 118 GoogleMaps   ; 1 male, MV J11264 View Materials   and 1 male, 2 females, 4 juveniles, MV J11257 View Materials , 75   km south-south east of Port Fairy, Bass Strait , (39°01'S 142°35'E), Smith-McIntyre grab/pipe dredge, 90 m, G.C.B. Poore, 9 October 1980, BSS 63 GoogleMaps   ; 1 female, MV J11258 View Materials , 46   km south west of Lakes Entrance, Bass Strait , (38°17'S 147°29'E), otter trawl, 29–31 m, M.F. Gomon and R GoogleMaps   . S. Wilson , 31 July 1983, BSS 211 T   ; 1 female, MV J11260 View Materials , 52   km west north-west of Cape Farewell, King Island, Bass Strait , (39°25'S 143°23'E), Smith-McIntyre grab/pipe dredge, 103 m, G.C.B. Poore, 10 October 1980, BSS 80 GoogleMaps   ; 20 specimens, MV J11265 View Materials , 44   km NE of Cape Wickham, King Island, Bass Strait , (39°22'00"S 144°18'18"E), grab, sled and trawl, 60 m, R GoogleMaps   . S. Wilson , 23 November 1981, BSS 203   ; 1 female, MV J11267 View Materials , 80   km west south-west of Cape Otway, Bass Strait , (39°59'S 142°37'E), Smith-McIntyre grab/pipe dredge, 94 m, G.C.B. Poore, 9 October 1980, BSS 62 GoogleMaps   ; 1 male, MV J11291 View Materials , 79   km south south-east of Port Fairy, Bass Strait , (39°02'S 142°38'E), Smith-McIntyre grab/pipe dredge, 119m, G.C.B. Poore, 9 October 1980, BSS 64 GoogleMaps   ; 1 male, 2 females, MV J11292 View Materials , 15   km south of Cape Wellington, Wilsons Promontory, Bass Strait (39°03'12"S 146°39'30"E), 55 m, WHOI GoogleMaps   epibenthic sled, R. S. Wilson , 18 November 1981, BSS 179 S   ; 1 male, MV J11519 View Materials   , off Crib Point, Western Port , Victoria (38°20'56"S 145°13'20"E), Smith-McIntyre grab, 8 m, A.J. Gilmour, 29 March 1965, CPBS-N GoogleMaps   ; 6 specimens, MV J13710 View Materials , 60   km east of North Point, Flinders Island, Bass Strait , (39°41'42"S 148°39'30"E), naturalist's dredge, 115 m, G.C.B. Poore, 27 March 1979, BSS 32 GoogleMaps   ; 1 female, 200 m west of Kinghorne Point, Woodbridge , Tasmania, (43°10'00"S 147°17'00"E), pipe dredge, 27 m, R GoogleMaps   . S. Wilson , 17 April 1985, TAS 5   ; 1 female, MV J70505 View Materials , 30   km north of North Point, Flinders Island, Bass Strait , (39°26'18"S 144°18'18"E), grab, sled and trawl, 49 m, R GoogleMaps   . S. Wilson , 17 November 1981, BSS 173   ; 1 female, AM   P.99055, south east of Lakes Entrance, Bass Strait , (38°08'50"S 148°35'00"E), sandy clay, 146 m, C. Phipps on Esso Gipps, 5–7 May 1969, Stn. 9 GoogleMaps   ; 3 males, AM   P.99056, 65 km south of Cape Schanck, Bass Strait (39°08'18"S 144°43'54"E), coarse sand, 66 m, R GoogleMaps   . S. Wilson on RV   Tangaroa   , 23 November 1981, BSS 201; 2 males, 1 female, 1 juvenile, AM   P.99057, 23 km east of Cape Rochon, Three Hummock Island, Bass Strait (40°22'12"S 145°17'00"E), sand, epibenthic sled, 40 m, M.F. Gomon and G.C.B. Poore on RV GoogleMaps   Sarda   , 3 November 1980, BSS 112.

Type locality. 60 km east of North Point, Flinders Island, Bass Strait, (39°41'42"S 148°39'30"E).

Etymology. The species name is derived from the Greek maia   , meaning “good mother”, in reference to the juveniles living in tubes which are attached to the female tube.

Description. Based on Holotype, male, 10.0 mm, MV J70540 View Materials . Head. Rostrum long, length 0.4 × head, evenly tapered, apically acute; lateral cephalic lobe with ventral corner rounded, subocular margin deeply recessed, reaching beyond eye, anteroventral corner rounded, ventral margin sloping. Antenna 1 very long, length 0.8 × body length; peduncle without scales; peduncular article 1 shorter than peduncular article 3, length 0.7 × peduncular article 3; peduncular article 2 with medial triangular projection; flagellum 10-articulate; article 1 long. Antenna 2 length equal to antenna 1; flagellum 9-articulate.

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

Pereon. Pereonite 1 without lateral keel or sternal keel. Pereonite 2 with sternal keel. Pereonite 3 without sternal keel. Pereonite 5 length 1.3 × depth.

Gnathopod 1 coxa not fused to pereonite 1, length 2.2 × depth, without anteroventral lobe; basis, length 2.3 × depth; carpus broad, length 1.4 × depth with setose posterior lobe; propodus palm acute, robust setae absent. Gnathopod 2 carpochelate; coxa not fused to pereonite 2, length 1.5 × depth, without anteroventral lobe or cusp; basis short, broad, length 1.6 × breadth; carpus long, length 1.2 × breadth, broad, palm shallowly excavate, anterodistal tooth large, located near articulation with propodus, posterodistal tooth well defined, medium length, length 1.1 × width; propodus broad, curved, length 4 × width, without tooth on posterior margin, posterodistal corner smooth, with 1 tooth; dactylus length 0.4 × propodus.

Pereopod 3 coxa not fused to pereonite 3, with broad anteroventral lobe, length 1.8 × depth; basis, length 1.8 × breadth, evenly rounded, with simple setae along anterior margin, without denticles along anterior margin; ischium long, length 2.3 × breadth; merus length 1.1 × breadth, short, without ridges. Pereopod 4 coxa not fused to pereonite 4, length 2.4 × depth, with anterior lobe separated from an anteroventral lobe; basis, length 1.9 × breadth, with simple setal group midway along anterior margin; ischium long, length 2.5 × breadth; merus long, length 1.3 × breadth. Pereopod 5 coxa, length 1.3 × depth, without patches of small setae; merus with anterior lobe extending beyond anterior margin of carpus, posterior lobe with 3 plumose setae; propodus with 2 setae along posterior margin; dactylus short, uncinate with 2 accessory hooks. Pereopod 6 coxa with setal fringe ventrally, without patches of small setae near margins; basis without patch of small setae near anterior margin; merus length 2 × breadth; dactylus short, uncinate, with 2 accessory hooks. Pereopod 7 coxa without posterodorsal lobe, without patch of small setae; merus length 2.5 × breadth; dactylus short, uncinate, with 2 accessory hooks.

Pleon. Pleopods 1–3 biramous, decreasing in size anteroposteriorly. Pleopod 1 inner ramus 9-articulate; outer ramus 8-articulate, article 1 evenly swollen. Pleopod 2 inner ramus reduced, 1-articulate; outer ramus broad, 4-articulate. Pleopod 3 inner ramus reduced, 1-articulate; outer ramus broad, 1-articulate. Uropod 1 biramous; peduncle, length 1.5 × outer ramus; rami with distoventral fan of robust setae; outer ramus with lateral row of denticles, with 2 medial setae, lateral setae absent, with large apical robust seta and smaller slender setae; inner ramus, length 0.5 × outer ramus, with 6 medial, and 5 lateral setae, without large apical robust seta. Uropod 2 uniramous, peduncle, length 3 × breadth, 5.1 × length of ramus; ramus small with 7 denticles and 1 slender apical seta. Uropod 3 uniramous, peduncle length 1.8 × breadth; ramus with 2 curved hooks. Telson   length 0.7 × breadth, weakly cleft (27 %), each lobe with 28–29 anteriorly directed hooks in 2 rows.

Female (sexually dimorphic characters). Based on paratype female 12.5 mm, MV J.70541. Antenna 1 flagellum 11-articulate. Ant enna 2 flagellum 10-articulate. Pereonite 2 without sternal keel. Gnathopod 1 carpus length 1.3 × depth with setose posterior lobe. Gnathopod 2 subchelate, basis, length 1.8 × breadth. Oostegites from gnathopod 2 to pereopod 5.

Tube. Encrusted with fine sediment; tubes of juveniles attached in a ring, circling the tube of adult female.

Remarks. Kapalana maia   belongs to the species group with a subquadrate projection along the posterior margin of peduncular article 1 of antenna 1. It shares with K. durraween   , K. michaelmas   and K. wadei   a lack of apical robust seta on the inner ramus of uropod 1. It shares with K. durraween   and K. wadei   an anterodistal projection on peduncular article 2, but in K. maia   the projection is triangular and more pronounced. It has an evenly tapered rostrum similar to K. durraween   . Kapalana maia   has no lateral keel on pereonite 1 or sternal keel on pereonite 3 (both present in K. durraween   ). The tubes of K. maia   are encrusted with fine sediment (encrusted with sand grains and pieces of shell in K. durraween   ).

Distribution. Australia. Victoria: Bass Strait; Wilsons Promontory. Tasmania: Bass Strait; King Island; Flinders Island; Woodbridge.

MV

University of Montana Museum

WHOI

Woods Hole Oceanographic Institution

R

Departamento de Geologia, Universidad de Chile

T

Tavera, Department of Geology and Geophysics

AM

Australian Museum

RV

Collection of Leptospira Strains