List species and varieties by family
Rhincalanidae Geletin, 1976 ( Eucalanoidea )
(1) Rhincalanus Dana, 1852
Rem.: type: Rhincalanus cornutus Dana,1849. Total: 4 spp.

Diagnosis from Bradford-Grieve (1994, p.74) :
- As in the family definition.
- Urosome female 3-segmented, and the posterior borders of some or all pedigers 2-4 and urosomal segment 1 with dorsal spines.
- A2 endopod squat ; exopod segments 1 and 2 separate.
- Md palp basis and exopod squat ; endopod normal, inserted terminally on basis which also bears 4 setae.
- Mx1 with 2 inner lobes bearing setae, inner lobe 2 present but without setae.
- P1 with a 2-segmented endopod and exopod.
- P5 female present, uniramous on both sides.
- P5 male uniramous on the right and biramous on the left.

Key to species (based on females) after Boxshall & Halsey (2004, p.176) :
1 - Female P5 lacking setal element on middle segment; distal segment drawn out into tapering point and carrying large, serrated inner spine ........ R. rostrifrons.
1' - Female P5 with 1 or 2 inner setae on middle segment; distal segment with 2 inner plumose setae and terminal spine (which may be short and naked or long and plumose) ...... 2.
2 - Female P5 with naked outer terminal spine, shorter than its segment ........ R. cornutus.
2' - Female P5 with terminal spine plumose (at least on one side), much longer than segment ..... 3.
3 - 3rd and 4th pedigerous somites each with paired spinous processes dorsally on posterior margin ...... R. gigas.

Rhincalanus aculeatus    T. Scott, 1894   (F)
Ref.: T. Scott, 1894 b (p.31, figs.F)
Loc: G. de Guinée
Rem.: Cf. Arietellus setosus

[1] Rhincalanus cornutus  (Dana, 1849)   (F,M)    [Figs]

Rhincalanus cornutus atlanticus    Schmaus, 1917   (F)
Ref.: Schmaus, 1917 (p.306, 314, figs. juv., F,M); Schmaus & Lehnhofer, 1927 (p.358, 360, 367, figs.F,M, juv.M); Vervoort, 1946 (p.116, 120); Sewell, 1948 (p.449); Marques, 1959 (p.207, fig.F); Vervoort, 1963 b (p.101, Rem.); Mazza, 1967 (p;321); Park, 1970 (p.474); Brodsky & al., 1983 (p.202)
Rem.: Les formes de l'Atlantique sont considérées comme une variété, mais pour Bowman (1971, p.18) des synonymes de Rhincalanus cornutus. Cf. Rhincalanus cornutus

Rhincalanus cornutus typicus    Schmaus, 1917   (F,M)
Ref.: Schmaus, 1917 (p.306, 312, figs. juv.,F,M); Schmaus & Lenhofer, 1927 (p.359, 365, fig.F,M, juv.); Vervoort, 1946 (p.118, 119, figs.F,M, juv., Rem.); Sewell, 1947 (p.48, Rem.); 1948 (p.449); Vervoort, 1963 b (p.101, Rem.); Mazza, 1967 (p.321); Bowman, 1971 b (p.18, Rem.); Brodsky & al., 1983 (p.201)
Rem.: Cf. Rhincalanus rostrifrons

[2] Rhincalanus gigas  Brady, 1883   (F,M)    [Figs]

Rhincalanus grandis    Giesbrecht, 1902   (F)
Ref.: Giesbrecht, 1902 (p.18, Descr.F, figs.F); Wolfenden, 1911 (p.193, 194, Rem.); Vervoort, 1951 (Rem., p.57, 58)
Loc: Antarct.
Rem.: Cf. Rhincalanus gigas

[3] Rhincalanus nasutus  Giesbrecht, 1888   (F,M)    [Figs]

[4] Rhincalanus rostrifrons  (Dana, 1849)   (F,M)    [Figs]

 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., 2005-2022. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at [Accessed December 09, 2022]

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Marine Planktonic Copepods

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