Plate 1 Issued from : J. Renz, E.L. Markhaseva & K. Schulz in Proc. Zool. Inst. RAS, 2012, 316 (2). [p.151, Fig.1]. As Ryocalanus antarcticus. Female (from 73°24'S, 22°08'W): A-B, habitus (lateral and dorsal, respectively); C-D, rostrum (ventral and lateral, respectively); E-F, pedigers 4-5 and urosome (dorsal and lateral, respectively); G, posterior prosome and genital double-somite (dorsal); H, urosome (dorsal); J, urosome (right lateral); K urosome (left lateral); L, posterior prosome and urosome (ventral). Scale bars = 0.1 mm. A, C-D, F, H-K: holotype; B, E, L: paratypes; G: paratype from 52°02'S, 0°00'E.
Plate 2 Issued from : J. Renz, E.L. Markhaseva & K. Schulz in Proc. Zool. Inst. RAS, 2012, 316 (2). [p.152, Fig.2]. As Ryocalanus antracticus. Female: A, A1, segments I-XVIII, round dots are scars of broken aesthetasks; B, A1, segments XIX-XXVIII; C, A1, segment I; D, A1, segments I-XVI; E, A2 (coxa, basis and endopod); F, A2 (exopod); G, Mx1; H, Mx1 (praecoxal arthrite, asterisk marks teeth near bases of middle terminal spines; I, Mx1 (coxal endite. A,B: paratype from52°02'S, 0°00'E; paratypes from 73°24'S, 22°08'W; H: holotype. Scale bars = 0.1 mm.
Plate 3 Issued from : J. Renz, E.L. Markhaseva & K. Schulz in Proc. Zool. Inst. RAS, 2012, 316 (2). [p.153, Fig.3]. As Ryocalanus antarcticus. Female: A, Md; B, Mx2; C, Mxp; D, P1. Scale bars = 0.1 mm. A: paratype from 52°02'S, 0°0'E; B-D: paratypes from 73°24'S, 22°08'W.
Plate 4 Issued from : J. Renz, E.L. Markhaseva & K. Schulz in Proc. Zool. Inst. RAS, 2012, 316 (2). [p.155, Fig.4]. As Ryocalanus antarcticus. Female: A-C, P2 to P4, respectively.Scale bars = 0.1 mm. A, B: holotype; C, paratype.
Plate 5 Issued from : J. Renz, E.L. Markhaseva & K. Schulz in Proc. Zool. Inst. RAS, 2012, 316 (2). [p.156, Fig.5]. As Ryocalanus antarcticus. Male: (from 73°24'S, 22°08'W): A-B, habitus (lateral and dorsal, respectively); C, forehead (lateral); D, rostrum (ventral); E, urosomal segment 5 and caudal rami (dorsal); F, left A1, segments I-XVI; G, left A1, segments XVII-XXVIII; H, P1; I, P5. Scale bars = 0.1 mm.
Left A1 unmodified of 24 free segments extending to urosome (segments indicated on the figure in Roman numerals are primitive segments).
Plate 6 Issued from : J. Renz, E.L. Markhaseva & K. Schulz in Proc. Zool. Inst. RAS, 2012, 316 (2). [p.157, Fig.6]. As Ryocalanus antarcticus. Male (from 73°24'S, 22°08'W): A, right A1, segments X-XXVIII, arrow shows small segment XIX; B, C, right A1, segments XVIII-XX (other views); D, A1, segments XXI-XXVIII (asterisk marks place of attachment of segment XX). Scale bars = 0.1 mm.
Nota: Right A1 geniculate, strongly modified, 23 free segments (segments indicated on the figure in Roman numerals are primitive segments).
Plate 7 Issued from : V.N. Andronov in Russian Acad. Sci. P.P. Shirshov Inst. Oceanol. Atlantic Branch, Kaliningrad, 2014. [p.44, Fig.12, 7]. As Ryocalanus antarcticus after Renz & al., 2012. Female P1.
Distribution
NZ: 2
Distribution map of Yrocalanus antarcticus by geographical zones
Above seabed (depth: 1983 and 2987 m). For Renz & al. (2012, p.154 ) the female is more closely related to R. admirabilis (= Yrocalanus admirabilis). This species is the first ryocalanoid copepod recorded from the Southern Ocean.
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