Cymbasoma tropicum - Species Card - Marine Planktonic Copepods

Species Card of Copepod

Monstrilloida ( Order )	details
Monstrillidae ( Family )	details
Cymbasoma ( Genus )	details	List species for this Genus

Cymbasoma tropicum (Wolfenden, 1905) (F,M)

Abbreviations or symbols

Syn.:

Thaumaleus tropicus Wolfenden, 1905 (1906) (p.1025, figs.F); Cymbasoma nicobarica Sewell, 1949 (p.142, figs.M); Silas, 1972 (p.639); Cymbasoma tropica : Martin Thompson & Easterson, 1983 (p.176, figs.F,M, Rem.)

Ref.:

(

List of the studied authors )

Sewell, 1949 (p.142, 144: Rem.); Desai & Krishnaswamy, 1962 (p.163, 165); Grygier, 1995 a (p.31, 51, 77, Rem.)

Species Cymbasoma tropicum - Plate 1 of morphological figures

issued from : R.B.S. Sewell in The John Murray Expedition, 1933-34, Scientific Reports, IX (2), 1949. [p.143, Fig.40 A-D]. As Cymbasoma nicobarica.
Male (Nankauri Harbour, Nicobar Is.): A, habitus (dorsal); B, urosome (ventral); C, A1; D, exopod of P4.
Nota: Anterior border of the head rounded, with a pair of minute hairs or projections spring from the surface between the origins of A1. A pair of well-developed and deeply pigmented eyes. Genital segment oval in shape. Caudal rami widely divergent, each bears 4 setae, of which 3 arise from the distal end, while the 4th arises from a low rounded swemming on the posterior and inner margin, directed backwards. A1 about one-third of the body-length, 5-segmented (the line of separation of the 2nd and 3rd segments apparently incomplete; proportional lengths of the various segments as 15:22:12:26:25 = 100; there is a distinct hinge-joint between the 4th and 5th segments.

NZ:

Distribution map of Cymbasoma tropicum by geographical zones

Distribution map of Cymbasoma tropicum for the Zone Indian Ocean

Loc:

(

Geographical glossary )

Maldive Is., Bombay, Nicobar Is., Nankauri Harbour

Lg.:

(

References of the authors concerning dimensions )

(78) F: 2; (662) M: 1,5; (782) F: 2,18-1,8; M: 1,44-1,22; {F: 1,80-2,18; M: 1,22-1,50}

Rem.:

in surface tow-net.
According to Sewell (1949, p.144) it is possible that this is the unknown male of Wolfenden's species Cymbasoma tropicus, but it is impssible to reach any conclusion on this point.

Last update : 02/01/2015


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