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Calanoida ( Order ) |
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Clausocalanoidea ( Superfamily ) |
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Scolecitrichidae ( Family ) |
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Rythabis ( Genus ) |
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Rythabis asymmetrica Markhaseva & Schulz, 2007 (F) | |
| | | | | | | Ref.: | | | Markhaseva & Schulz, 2007 (p.737, figs.F) |  issued from : E.L. Markhaseva & K. Schulz in J. Nat. Hist., 2007, 41 (13-16). [p.738, Fig.4] Female (from 58°24'S, 25°01'E): A-B, habitus (lateral and dorsal, respectively); C, forehead (lateral); D-E, posterior prosome and urosome (dorsal and lateral, respectively); F-G, posterior prosome and genital double-somite (right and left lateral, respectively); H, genital double-somite (right lateral). Scale bars: 0.1 mm. Holotype: C, D, F, G. Paratype: A, B, E, H. Nota : Prosome 3.0-3.4 times longer than urosome. Cephalosome and pediger 1 incompletely separate ; 4th and 5th incompletely separate. Posterior corners of prosome rounded, asymmetrical, right one shorter. Genital double-somite nearly symmetrical ; spermathecae elongate, in distal half frontally directed. Caudal rami with 4 terminal setae, 1 small dorsal seta, ventral seta apparently missing.
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 issued from : E.L. Markhaseva & K. Schulz in J. Nat. Hist., 2007, 41 (13-16). [p.739, Fig.5] Female: A, A1; B, A2 (endopod segment 2 omitted); C, A2 (endopod segment 2); D, Md (mandibular palp); E, Md (endopod); F, Md (gnathobase); G, Md masticatory edge); H, Mx1; I, P5 (posterior). Scale bars: 0.1 mm. Nota : A2 exopod 7-segmented (2.5 times as long as endopod), with 0, 1, 1, 1, 1, 1, 3 setae ; endopod segment 1 with 2 setae, 2nd with 7 and 6 setae. Md gnathobase with 5 large and 3 small teeth, 1 seta and a row of spinules along cutting edge ; exopod of 5 segments with 1, 1, 1, 1, and 2 setae ; endopod segment 1 with 2 setae, segment 2 with 9 setae. Mx1 : praecoxal endite with 9 thick and 1 thin small terminal and 4 posterior setae ; coxal endite with 5 setae, coxal epipodite with 9 setae ; proximal basal endite with 4 setae, distal basal endite with 5 setae fused to endopod, endopod with 9 setae ; exopod with 4 setae. P5 uniramous, 3-segmented, coxa slightly smaller than basis, both with denticles on posterior surface medially and distally ; exopod armed with 4 spines, 1 toothed medial, 1 short lateral and 2 strong toothed spines distally.
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 issued from : E.L. Markhaseva & K. Schulz in J. Nat. Hist., 2007, 41 (13-16). [p.740, Fig.6] Female: A, Mx2 (praecoxal, coxal and proximal basal endites; posterior view); B, Mx2 (proximal basal endite (setae not figured) plus endopod; C, Mxp (syncoxa and basis; D, Mxp (endopod); F, P1 (anterior view); G, right endopod of P1 (anterior view). Scale bars: 0.1 mm. Mx2 : proximal praecoxal endite with 4 setae, distal with 3 setae ; proximal and distal coxal endites with 3 setae each ; proximal basal endite plus endopod with 6 worm-like (3 longer than others) and 2 brush-like sensory setae with distal filaments longer than setae itself. P1 : basis with curved mediodistal seta ; endopod 1-segmented with poorly developed lateral lobe, 3 medial and 2 terminal setae present, endopod with denticles along proximal lateral edge and lateral corner distally.
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 issued from : E.L. Markhaseva & K. Schulz in J. Nat. Hist., 2007, 41 (13-16). [p.741, Fig.7] Female: A, P2 (posterior); B, P3 (posterior); C, P4 (posterior).Scale bar: 0.1 mm.
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Distribution map of Rythabis asymmetrica by geographical zones
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| | | | | | | Loc: | | | Antarct. (Scotia Sea) | | | | N: | 1 | | | | Lg.: | | | (969) F: 1,28; 1,35; {F: 1,28-1,35} | | | | Rem.: | hyperbenthic; bathypelagic (2258-2281 m). | | | Last update : 12/07/2013 | |
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 Any use of this site for a publication will be mentioned with the following reference :
Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed April 25, 2024] © copyright 2005-2024 Sorbonne University, CNRS
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