Bradford, 1971 a (p.133, Descr.F, figs.F); Bradford-Grieve,1999 b (p.74, Rem., figs.173, 191); Park, 2000 (p.20, figs.F,M, Rem.)
Figures
Plate 1 issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.158, Fig.6]. Female: a, habitus (left side); b, c, urosome (left, dorsal, respectively); d, e, genital somite (left, ventral, respectively); f, exopod of P5 (anterior). Nota: Dorsally, genital somite relatively short, with smoothly curved lateral swellings.
Male: g, h, exopod of P5 (posterior, anterior, respectively); i, exopod of right P5 (posterior); j, right P5 with endopod omitted (anterior); k, left P5 (anterior); l, left P5 with endopod omitted (posterior); m, right P5 (posterior). mpr = medial projection.
Plate 2 issued from : M.V. Heptner in Zool. Zh., 1972, 51 (11). [p.1646, Fig.1]. As Disseta coelebs. Male (from Bougainville Trench): 1-2, habitus (lateral and dorsal, respectively); 3, ornamentation on the cephalosome (dorsol portion); 4, cephalosome (lateral); 5, last thoracic segment and urosomal segments 1 and 2 (lateral); 6, caudal rami (dorsal); 7, P5; 8, P1.
Plate 3 issued from : J.M. Bradford in N.Z. Jl mar. freshw. Res., 1971, 5 (1). [p.134, Fig.11]. Female (from 41°47'S, 175°01'E): a-b, habitus (dorsal and lateral, respectively); c, genital segment (lateral, left side); d, A1; e, A2; f, Md (mandibular palp); g, Md (edge of mandibular blade); h, Mx1; i, Mx2; j, Mxp; k, P1; l, P2; m, external spine of exopodal segment 3 of P2; n, P3; o, P4; p, right P5; q, endopodal segment 2 of left P5. Nota; A1 exceeding caudal rami by 5 segments. Rostrum with 2 filaments. Mx1 1st inner lobe with 14 spines and setae. Rami of swimming leg exopods with a larger number of posterior surface glandular pores than D. palumbii Genital segment widest anteriorly (in dorsal view). Genital segment and urosomal segment 2 covered with very small spinules, and borderd posteriorly by fringe of spinules as is urosomal segment 3.
Plate 4Disseta magna female: 1 - Dorsally, genital somite (Fig.6-c) relatively short, with smoothly curved lateral swellings.
Plate 5Disseta magna male: 1 - Left P5 (Fig.6-h), 2nd exopodal segment without a large lateral spiniform process. 2 - Left P5 (Fig.6-k), 2nd endopodal segment with an anterodistal lobe; 3rd exopodal segment with a small terminal spine.
Distribution
NZ: 5
Distribution map of Disseta magna by geographical zones
bathypelagic- abyssopelagic. Park (2000, p. 143) found this species in the low and midlatitudes of both the Pacific and Indian Oceans, accounted 6 % of specimens, vs 31 % for D. scopularis and 63 % for D. palumbii.
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