Cyclopoida ( Order )
Urocopiidae Humes & Stock, 1972 ( Cyclopoida )
Ref.: Humes & Stock, 1972 (p.122, 130); 1973 (p.6); Bowman & Abele, 1982 (p.12); Huys & Boxshall, 1991 (p.291, 412, 421); Razouls, 1993 (p.313); Boxshall & Halsey, 2004 (p.17, 694: Def.)
Rem.: 1 G. Urocopia Sars, 1917.
Family Urocopiidae - Plate 1Issued from : G.A. Boxshall & S.H. Halsey in The Ray Society, 2004, N°166, Part II. [p.695, Fig.231].
A, Urocopia singularis male; B, Female Md; C, Male Mxp; D, A2; E, Urocopia deeveyae (as Sinoculosapphirina deeveyae) female; F, Mx1; G, A2; H, Mxp.
Heron & Damkaer, 1996; Boxshall, 1981: E-H.

Family Urocopiidae - Plate 2Issued from : G.A. Boxshall & S.H. Halsey in The Ray Society, 2004, N°166, Part II. [p.694].
Armature formula of swimming legs P1 to P4.
Nota: Swimming legs P1 to P4 biramous, with 3-segmented rami; jointed by intercoxal sclerites in legs 1 to 45.
- P5 incorporated into somite, lacking any free segment; represented by 2 setae on small lobe in both sexes.
- P6 represented by genital operculum armed with 3 setae in female; with 2 setae in male.
(1) Urocopia Sars, 1917
Syn.: Sapphoncaea Olson, 1949;
Sinoculosapphirina Boxshall, 1981 a (p.310)
Ref.: Sars, 1917 a (p.9); Humes & Stock,1973 (p.329); Heron & Damkaer, 1986 (p.141, clé spp.); Boxshall & Halsey, 2004 (p.694, Clé des espèces)
Rem.: Bathypelagic forms. Total: 2 spp.

key to species after Boxshall & Halsey (2004, p.694):
- Caudal rami about as long as 3 preceding somites combined .............. Urocopia singularis Sars, 1917.
- Caudal rami about as long as preceding somites plus genital double-somite combined .........Urocopia deeveyae (Boxshall, 1981)
Remarks on dimensions and sex ratio:
The mean female size is 2.56 mm (n = 3; SD = 0.08359) and the mean male size is 1.17 mm (n = 2). The size ratio (male / female) is 0.56 - 0.46, or approximately 50 %. The sex ratio (female / male) is up to date 2/1 in 2014.

 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 [Accessed June 25, 2024]

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Marine Planktonic Copepods

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