Species Card of Copepod
Calanoida ( Order )
    Diaptomoidea ( Superfamily )
        Pseudodiaptomidae ( Family )
            Pseudodiaptomus ( Genus )
Pseudodiaptomus cristobalensis  Marsh, 1913   (M)
Syn.: no Pseudodiaptomus cristobalensis : Carvalho, 1952 a (p.146, figs.F);
? P. wrighti Johnson, 1964 (p.38, figs.M variant)
Marsh, 1913 (p.6, Descr.M, figs.M); 1933 (p.33, figs.M); Wright, 1937 a (p.162); Sewell, 1948 (p.465); Dussart & Defaye,1983 (p.31); Grindley,1984 (p.226, fig.M); Walter,1986 (p.131); 1986 a (p.502, fig.1: zoogeogr.); 1987 (p.366); 1989 (p.603, Redescr.M, figs.M; .)
Species Pseudodiaptomus cristobalensis - Plate 1 of morphological figuresissued from : T.C. Walter in Bull. Mar. Sc., 1989, 45 (3). [p.604, Fig.7].
Male: A, habitus (dorsal); B, last thoracic segments and urosome (lateral right side); C, P5 (posterior view); D, idem (anterior view).
sp = spermatophore.

Species Pseudodiaptomus cristobalensis - Plate 2 of morphological figuresIssued from : C.D. Marsh in Proc. U.S. natn. Mus., 1933, 82 (18) (2959). [Pl. 17, figs.1-3].
Male (from old French canal, Isthmus of Panama): 1, last thoracic segment and 1st urosomal segments (dorsal); 2, urosome (dorsal); 3, exopod of A2.

Nota: Head and 1st thoracic segment fused.The exopods of A2 show clearly only two segments in the central portion.

Species Pseudodiaptomus cristobalensis - Plate 3 of morphological figuresIssued from : C.D. Marsh in Proc. U.S. natn. Mus., 1933, 82 (18) (2959). [Pl. 16, fig.7].
Male: P5.

Nota: The hook of the right exopod is stout and about equal in length to the 2nd segment. The left leg has a spatulate endopod, which is about twice as long as the 1st segment of the exopod; the 2nd segment of the exopod is truncate at its distal end, which is armed with minute setae, has a spine about midway of the outer margin.

Compl. Ref.:
Morales-Ramirez & Suarez-Morales, 2008 (p.521)
NZ: 1 + 2 doubtful

Distribution map of Pseudodiaptomus cristobalensis by geographical zones
Species Pseudodiaptomus cristobalensis - Distribution map 2issued from : T.C. Walter in Bull. Mar. Sc., 1989, 45 (3). [p.625, Fig.18].
Map of American continents showing the zoogeography of Pseudodiaptomus species.
E Panama Canal, Brazil, W Costa Rica, ? Ecuador
N: 4
(950) M: 1,25-1,30; {M: 1,25-1,30}*
* 0.1 mm in Marsh (1933), probably a mistake for 1 mm [C.R.].
Rem.: marine and brackish.
Incomplete data.

In Americanus species group (acutus subgroup) after Walter & al. 2006, p.203.
Last update : 08/02/2014
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2023. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed December 05, 2023]

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Marine Planktonic Copepods

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