Species Card of Copepod
Monstrilloida ( Order )
    Monstrillidae ( Family )
        Cymbasoma ( Genus )
Cymbasoma tranteri  Suarez-Morales & McKinnon, 2016   (F)
Suarez-Morales & McKinnon, 2016 (p.106, Descr. F, figs. F, Rem.)
Species Cymbasoma tranteri - Plate 1 of morphological figuresIssued from : E. Suarez-Morales & A.D. McKinnon in Zootaxa, 2016, 4102. [p.107, Fig.62].
Female (from 34°4.670'S, 151°9.100'E): A, right A1 (dorsal); B, cephalic region with arrow indicating medial process between A1 bases, left A1 omitted (lateral); C, same (ventral); D, detail of cuticular processes on ventral surface between A1 bases; E, urosome (dorsal); F, same (ventral); G, same (lateral).
Scale bars: A-C, E-G = 100 µm; D = 50 µm.

Nota: - Urosome (caudal rami not included) representing 12 % of total body length. Relative lengths of urosomites 32.6 : 40 : 27.4 = 100.
- Ovigerous spines paired, separated at base, relatively long, 52 % of total body length; spines equally long.
- Caudal rami not divergent, subrectangular, about 1.3 times as long as wide, armed with 3 caudal setae.
- A1 representing about 16.2 % of total body length and 23.4 % of cephalothorax length; 4-segmented, relative length of distal segment 57 %.
- P5medially conjoined, bilobate, outer (exopodal) lobe cylindrical, with distal rounded process. Inner lobe arising basally, thumb-like, reaching midlength of exopodal lobe. Outer lobe armed with 3 subapical setae, innermost seta longest.

Species Cymbasoma tranteri - Plate 2 of morphological figuresIssued from : E. Suarez-Morales & A.D. McKinnon in Zootaxa, 2016, 4102. [p.108, Fig.63].
Female: A, habitus (lateral); B, ovigerous spines; C, P1; D, P2 with intercoxal sclerite; E, P3 with inercoxal sclerite; F, detail of mammiliform outer spine on 3rd exopodal segment of legs (arrows in figuresC D indicates position of mammiliform spines.
Scale bars: A = 500 µm; C-E = 100 µm; F = 50 µm.

Nota: Cephalothorax representing 68 % of total body length.
- Midventral oral papilla moderately protuberant, located at 15 % of cephalothorax length.
- Pair of relatively large ocelli, pigment cups well developed, medially conjoined, separated by less than half an eye diameter, weakly pigmented; ventral cup as large as lateral cups.
- Frontal sensilla absent.

Species Cymbasoma tranteri - Plate 3 of morphological figuresssued from : E. Suarez-Morales & A.D. McKinnon in Zootaxa, 2016, 4102. [p.109].
Female: Armature formula of swimming legs P1 to P4.

NZ: 1

Distribution map of Cymbasoma tranteri by geographical zones
SE Australia (Port Hacking, New South Wales)

Type locality: 34°4.670' S, 151°9.100' E.
N: 1
(1198)* F: 2,23; {F: 2,23}

* Body length measured from the anterior end cephalothorax to the posterior end of the anal somite.
Rem.: For Suarez-Morales & McKinnon (2016, p.110) the species can be distinguised from its Autralian congeners that have a P5 inner lobe shorter than the outer lobe by details of the armature of the outer lobe.. A distinctive apomorphy of C. tranteri is the peculiar mammiliform shape of the outermost spine of the 3rd exopodal segment of P1-P4, a character not previously observed in any other known Cymbasoma (see in fig. 63C-F)
Last update : 04/10/2016
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2022. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed January 22, 2022]

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