Species Card of Copepod
Monstrilloida ( Order )
    Monstrillidae ( Family )
        Cymbasoma ( Genus )
Cymbasoma rostratum  (T. Scott, 1904)   (F)
Syn.: Thaumaleus rostratus T. Scott, 1904 (p.250, Descr.F, figs.F); van Breemen, 1908 a (p.216, figs.F); Isaac, 1975 (p.3, 9, fig.F);
Cymbasoma rostrata : Rose, 1933 a (p.350, figs.F)
Ref.:
Rose, 1933 a (p.350, fig.F)
Species Cymbasoma rostratum - Plate 1 of morphological figuresissued from : T. Scott in Rep. Fishery Bd Scotl., 1904, 12 (3). [Pl. XIV, fig.5]. As Thaumaleus rostratus.
Female (from Lerwick Harbour, Shetlad): 5, habitus (dorsal).

Nota : 1st cephalothoracic segment moderately stout, tapering gradually in front into a blunt pointed rostrum, while posteriorly the body becomes gradually narrower towards the distal extremity.


Species Cymbasoma rostratum - Plate 2 of morphological figuresissued from : T. Scott in Rep. Fishery Bd Scotl., 1904, 12 (3). [Pl. XIV, figs.6-8]. As Thaumaleus rostratus.
Female: 6, A1; 7, P5; 8, abdomen and caudal rami.
Abdomen 3-segmented ; 1st segment as large as the next two together, but the 2nd very small.
caudal rami each with 3 setae of moderate lengths
A1 short and moderately stout, 4-segmented and sparingly setiferous ; 1st and 3rd segments small, 2nd about one and a half times the length of the 3rd, while the last equal to the entire length of the other’ 3 segments.
P5 short and foliaceous, and each terminates in two unequal lobes ; the outer lobe, which is narrower than the inner and projects somewhat beyond it, furnished with 3 moderately long setae ; the inner lobe broadly rounded and provided with a single seta.

Compl. Ref.:
Grygier, 1995 a (p.20, 21,75); Holmes, 2001 (p.61)
NZ: 1

Distribution map of Cymbasoma rostratum by geographical zones
Loc:
Shetland Is., W Ireland
N: 3
Lg.:
(727) F: 3,9; {F: 3,90}
Rem.: Isaac (1975) suggests that Thaumaleus similirostratus could be the male of this species.
Last update : 02/09/2014
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Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2014. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Available at http://copepodes.obs-banyuls.fr/en 
[Accessed October 25, 2014]

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