Species Card of Copepod
Calanoida ( Order )
    Calanoidea ( Superfamily )
        Paracalanidae ( Family )
            Calocalanus ( Genus )
Calocalanus monospinus  Chen & Zhang, 1974   (F,M)
Chen & Zhang, 1974 (p.110, 115, figs.F,M, p.116: Rem.)
Species Calocalanus monospinus - Plate 1 of morphological figuresissued from : Q.-c. Chen & S.-z. Zhang in Studia Marina Sinica, 1974, 9. [Pl.6, Figs.62-71].
Female (from South China Sea): 62, habitus (dorsal); 63, abdomen (lateral right side); 64, Mxp (basal part); 65, P1; 66, P2; 67, P3; 68, P3 (posterior surface); 69, P5.
Nota: 2nd abdominal segment very short, being usually overlapped by the preceding segment. Anal segment slightly expanded laterally and bearing ventrally a bundle of long and fine setae. Caudal ramus slightly longer than broad. A1 24-segmented, about twice as long as body, the terminal segment about twice as long as the two preceding segments taken together. Mxp 7-segmented, 2nd segment provided on the inner border with 3 plumose setae and 11 teeth of unequal lengths. Endopods 2 and 3 of P3 and P4 provided each with 2 spinules on the posterior surface. P5 uniramous and symmetrical, segment 3 with a transverse line of spinules near the distal end and a long single spine at the apex.

Male: 70, habitus (dorsal); 71, P5.
Nota: Prosome about 4.5 times as long as urosome. Abdomen 5-segmented. Caudal ramus about 1.5 times as long as broad. P5 asymmetrical; left foot 5-segmented; right foot 4-segmented, segment 4 with a minute denticle interposed between the two terminal spines, the inner one very long, about as long as the segments 2-4 taken together

Compl. Ref.:
Shih & Young, 1995 (p.71); Noda & al., 1998 (p.55, Table 3, occurrence)
NZ: 2

Distribution map of Calocalanus monospinus by geographical zones
China Seas (East China Sea, South China Sea), S Japan (Kuchinoerabu Is.)
N: 4
(338) F: 0,8-0,65; M: 0,58-0,53; {F: 0,65-0,80; M: 0,53-0,58}
Rem.: For Chen & Zhang (1974, p.116) this species is a tropical species occurring abundantly in surface coastal waters all the year round, ranging from the Hsi-sha Islands to the eastern Kwangtung.
Last update : 06/02/2016
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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 March 03, 2024]

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Marine Planktonic Copepods

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