Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Stephidae ( Family )
            Stephos ( Genus )
Stephos tropicus  Mori, 1942   (F,M)
Syn.: Stephus tropicus Mori, 1942 (p.551, figs.F,M); no Stephos tropicus Greenwood, 1977 (p.58, figs.M); Bradford-Grieve, 1999 a (p.25, Table1: Rem.)
Species Stephos tropicus - Plate 1 of morphological figuresissued from : T. Mori in Palao trop. biol. Stn Stud., 1942, 2 (3). [Pl.IX, Figs. 10, 11].
Female (from Palao Island): 10, Mx1; 11, P4.
Nota: Head truncate in lateral view).
Lateral corners of the last thoracic segment rounded and symmetrical.
Urosome 4-segmented.
Genital segment nearly as long as the other 3 urosomal segments together.
Caudal rami about as long as its width.
A1 24-segmented, reaching to the end of the 2nd urosomal segment.
Exopod of A2 shorter than twice the length of the endopod.
P5 symmetrical, each leg uniramous, 3-segmented; the 3rd segment nearly 4 times as long as the 2nd; the distalportion of outside is finely serrate.

Species Stephos tropicus - Plate 2 of morphological figuresissued from : T. Mori in Palao trop. biol. Stn Stud., 1942, 2 (3). [Pl.X, Fig. 10].
Male: 10, P5 (posterior view).
Nota: Urosome 5-segmented.

Compl. Ref.:
Jacoby & Greenwood, 1988 (tab.1)
NZ: 2

Distribution map of Stephos tropicus by geographical zones
Oropushakaru Island (Palau) in sea-water pool, Australia (Great Barrier Reef: Heron Reef)
N: 2
(561) F: 0,82; M: 0,73; {F: 0,82; M: 0,73}
Rem.: According to Mori (1942, p.551) this species resembles that of Stephos scotti (Sars).
After Bradford-Grieve (1999 a, p.25) this species belongs to type III (see Genus Stephos).
Last update : 14/08/2015
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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 May 29, 2024]

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Marine Planktonic Copepods

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