Sheardella kapala Lowry, 1984

Lowry, J. K. & Stoddart, H. E., 2012, The Pachynidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea) 3246, Zootaxa 3246 (1), pp. 1-69 : 57-58

Sheardella kapala Lowry, 1984

( Fig. 40 )

Sheardella kapala Lowry, 1984: 54 , figs 1–3. ― Barnard & Karaman, 1991: 530. ― Springthorpe & Lowry, 1994: 21. ― Lowry & Stoddart, 2003: 170.

Material examined. 1 specimen, AM P.46623, off Cape Banks , New South Wales, Australia, 34°00'N 151°16'E, 65-70 m, sand, November 1990, The Ecology Lab, stn CB T3 S3 . – 2 specimens, AM P.46624, south-east of Bate Bay , NSW, Australia, 34°05.9'S 151°12'E, 70 m, sand, July 1990, The Ecology Lab, stn Cobblers S 2 T2 . – 1 specimen, AM P.52939, east of Providential Head , Wattamolla, New South Wales, Australia, 34°8' S 151°8.5' E, 50 m, sand, June 1990, The Ecology Lab, stn S2P3 . – 10 specimens in 6 lots, AM P.46428, P46619 to P46622, P52938, off Bass Point , NSW, Australia, 34°36'S 150°54'E, 45–70 m, sand, February 1990 to January 1991, The Ecology Lab . – 4 specimens, AM P.39240, south-east of Broken Bay , New South Wales, Australia, 33°36'S 151°30'E to 33°37'S 151°29'E, 71–75 m, 10 February 1986, R. T . Springthorpe & P.D. Filmer-Sankey, FRV Kapala, stn K86- 01-02 . – 2 specimens, MV J22347 , 3.2 km south of Cape Conran , eastern Bass Strait, Australia, 37°50.63"S 148°43.47'E, 49 m, sand and shell, Smith-McIntyre grab, 28 September 1990, Marine Science Laboratories, stn MSL-EG 55. – 1 female, MV J22348 , 8.6 km west south-west of Cape Conran, eastern Bass Strait, Australia, 37°51.19"S 148°38.53'E, 51 m, mud and shell, Smith-McIntyre grab, 28 September 1990, Marine Science laboratories, stn MSL-EG 56 . – 5 specimens, MV J13722 , 60 km east of North Point , Flinders Island, eastern Bass Strait, Australia, 39°41.7'S 148°39.5'E, 115 m, muddy sand, dredged, 27 March 1979, G.C.B. Poore, HMAS Kimbla , stn BSS 32 . – 1 male, MV J11269 , 63 km east of North Point , Flinders Island, eastern Bass Strait, Australia, 39°44.8'S 148°40.6'E, 124 m, muddy sand, epibenthic sled, 14 November 1981, R . Wilson , RV Tangaroa , stn BSS 167 . – 1 specimen, MV J62413 , 5 km north of North Point , Tasmania, central Bass Strait, Australia, 40°40.3'S 145°15'E, 33 m, medium shell, Smith-McIntyre grab, 4 November 1980, M. Gomon & G.C.B. Poore, FRV Sarda , stn BSS 115G . – 2 specimens, MV J62414 , 2 km east of Cape Boullanger , Maria Island, Tasmania, Australia, 42°34'S 148°06'E, 50 m, fine bryozoan and shell, epibenthic sled, 23 April 1985, R . S. Wilson , RV Challenger , MV stn TAS 29.

Diagnostic description. Head lateral cephalic lobe large, broadly rounded; ventral margin curved. Antenna 1 peduncular article 1 without posterodistal spine; accessory flagellum 2-articulate, article 1 short; flagellum without callynophore in female, with strong 2-field callynophore in male. Mandible lacinia mobilis a simple robust seta; lamina dentata absent; accessory setal row present, on raised setose ridge (weak); molar absent; palp attached midway; palp article 2 broad, longer than article 3; article 3 with anterior margin convex, not tapered distally. Maxilla 1 outer plate with 11 setal-teeth in 7/4 arrangement, outer row setal-teeth with lateral and medial cusps; palp well developed, 2-articulate, with apical slender setae. Maxilliped inner plate small; outer plate large; palp 4-articulate, article 4 large. Gnathopod 1 weakly chelate; ischium smaller than propodus, not swollen posteroproximally; carpus extremely compressed; propodus length about 2.5 × breadth, posterior margin well developed, palm with produced corner, corner of palm with complex robust seta; dactylus reaching to corner of palm. Gnathopod 2 palm large, transverse. Pereonite 4 without dorsal spines. Pereonite 5 without dorsal spines. Pereopod 5 merus without posteroproximal shoulder. Pereopod 6 basis with posteroventral lobe weakly produced; merus longer than broad, without posteroproximal shoulder. Pereopod 7 basis subquadrate with posterior margin weakly dentate. Oostegites from gnathopod 2 to pereopod 5. Epimeron 3 posterior margin without projections, posteroventral corner broadly rounded. Uropod 3 uniramous. Telson shorter than broad, entire.

Remarks. Sheardella kapala was incorrectly reported by Lowry (1984) as lacking a lacinia mobilis. A welldeveloped lacinia mobilis is present on the left mandible.

Distribution. South-eastern Australia, western South Pacific Ocean; 33–124 m depth.

Figures

FIGURE 40. Sheardella kapala Lowry, 1984. MD: holotype female, 5.0 mm, AM P.32390, east of Port Jackson, New South Wales, Australia; A1, G1: male, 3.5 mm, AM P.46428, east of Bass Point, New South Wales, Australia. Scales represent 0.1 mm.