issued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1962, X (1). [p.64, Fig.140]. Female (from Izu region): a, habitus (dorsal); b, forehead (left lateral side); c, last thoracic segment and urosome (left lateral side); d, rostrum (dorsal view); e, Mx2; f, P1; g, P2; h, P3; i, P5.
Nota Female: - Cephalothorax about 4 times the abdomen length. 4th and 5th pedigers fused. - Posterolateral corners of the last thoracic segment rounded but there is a sudden change in outline along the dorso-lateral corner. - Rostrum with rami robust, terminate in fine filaments. - Abdominal segments and caudal rami proportional lengths 39 : 21 : 19 : 7 : 14 = 100. - Genital segment as long as wide, slightly swollen ventrally; there is a transverse row of minute spinules on the proximal part near junction with the cephalothorax. - Caudal rami slightly longer than wide. - A1 23-segmented; extends to the distal end of the caudal rami.. - A2 exopod 1.2 times as long as endopod. - Mx1 with 7 long and 2 short setae on the outer lobe; 9 setae on exopod; 5+3 setae on endopod; 5 setae on the 2nd basal; 4 setae on the 3rd inner lobe; 2 setae on the 2nd inner lobe; 13 setae on the 1st inner lobe (= arthrite). - Mx2 has 5 bud-like sensory filaments of about equal in size, and 3 long worm-like ones on the distal segments. - Mxp with a tuft of hairs at base of the bud-like sensory filament on the 1st basal segment, which arises from the middle of the external margin; 4th lobe with, beside 3 usual setae, a small rounded process near the distal border. - P1 with the 1st exopodal segment 1 outer edge spine reaching the distal margin of 2nd segment. - P2 with the 1st exopodal segment a long and curved outer edge spine, exceeding the middle of the outer margin of the 2nd segment. Terminal spine of exopod with 32 teeth. - P3 with 22 teeth on terminal spine of exopod. - P5 3-segmented. Distal segment with a strong inner marginal spine, coarsely denticulated along the anterior margin; terminal spine short, about 1/3 the length of the inner marginal spine; there is on the outer margin 1 small spine at base ot the terminal spine, and 1 small outer marginal spine opposite to the inner marginal spine. Posterior surface of segments furnished with a group of spines.
issued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1962, X (1). [p.65, Fig.141]. Male (from Izu region): a, forehead (left lateral side); b, thoracic segments (left lateral side); c, rostrum (dorsal view); d, A2; e, Mx2; f, P1 (posterior view); g, P2; h, P3; i, P4; j, P5.
Nota Male: - Cephalothorax about 2 times the abdomen lenth. - 4th and 5th pedigers incompletely fused, line of fusion clearly seen in lateral aspect. - Rostrum as in female, but the basal rami much stronger. - Urosome 5-segmented; segments and caudal rami in proportional lengths 9 : 32 : 27 : 25 : 2 : 5 = 100. - 2nd and 3rd abdominal segments fringed with fine teeth on the distal border. - Caudal rami divergent, a little wider than long. - A1 20-segmented on left sie, 19-segmented on right side; extends to the distal end of the 2nd abdominal segment. - A2 exopod 1.2 times as long as endopod; 1st exopodal segment furnished with short hairs along the anterior margin. - Md and Mx1 as in female. - Mx2 bears 5 bud-like sensory filaments and 4 worrm-like on the distal segments, one of the latter is much larger than the others. - P1 with 1 outer edge spine on , extending to the middle of the 2nd segment. - P2 with 1 outer edge spine on the 1st exopodal segment, curved considerably at the distal end. Terminal spine of exopod with 32 teeth. - P3 with on the 2nd basal segment (= basis) rows of spinules along anterior distal border. Terminal spine of exopod with 20 teeth.
Issued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.XLIX, figs.22-27]. As Scolecithrix propinqua. Female: 22, habitus (dorsal); 23, idem (lateral left side); 24, rostrum; 25, endopodal segments of P2; 26, endopodal segments of P3; 27, P5.
Nota Female (as Amallothrix propinqua): - Posterolateral corners of the last thoracic segment slightly obtusely rounded. - Rostrum comparatively shorter than A. gracilis, but of the same structure. - Urosome length about 1/4 of prosome. - Genital segment as long as two following segments together, slightly swollen ventrally. - Caudal rami small and slightly divergent. - A1 reaches end of caudal rami. - A2, mouthparts and swimming legs similar to those A. gracilis. - P5 resembles those A. gracilis, distinctly biarticulate; proximal segment shorter than distal and hairies outside at end; distal segment furnished with of number rigid hairies outside, segment obliquely truncate at yje extremity and with 2 spines, 1 inner very strong and 1 smaller at apex.
issued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1962, X (1). [p.63]. Female: Proportional lengths of segments of A1. -A1 23-segmented. Segments 14 and 18 with each a proximal seta.
issued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1962, X (1). [p.66]. Male: proportional lengths of segments on the left side of A1. - A1 20-segmented on the left side; 19-segmented on the right side. Segments 14, 18, 21, 22 and 25 have each a long seta. Proximal segments with well-developed aesthetascs.
South Africa (E, Natal), G. of Guinea, off Mauritania, Canaries, off NW Canary Is., off Portugal, off Bermuda: Station ‘’ S’’ (32°10’N, 64°30’W), Sargasso Sea, Medit. (S Adriatic Sea, Lebanon Basin, Egypt coast), Philippines (in C. B. Wilson, 1950), Japan, N-S Chile (in Björnberg, 1973)
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Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2020. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 27 septembre 2020]