List species and varieties by family
Aegisthidae Giesbrecht, 1892 ( Harpacticoida, Cervinioidea )
(1) Aegisthus Giesbrecht, 1891
Rem.: type: Aegisthus mucronatus Giesbrecht,1891. 2 spp. + 1 doutbtful (inc. sed.)
For Huys (1988, p.124) the sexual dimorphism amongst the three known Aegisthus species is markedly constant. Apart from differences in the antennular sgmentation in the male, Boxshall (1979) found that the Mx2 and Mxp are closer to the female condition in A. aculeatus males than in A. mucronatus males.

[1] Aegisthus aculeatus  Giesbrecht, 1891   (F,M)    [Figs]

Aegisthus atlanticus    Wolfenden, 1902   (F)
Ref.: Wolfenden, 1902 (p.364, Rem.F); Rose, 1933 a (p.294, Rem.F); Lang, 1948 (p.175)
Loc: off Ecosse N (Féroé-Shetland)
Lg.: (240) F : 1,45
Rem.: Cf. Aegisthus mucronatus

Aegisthus dubius    Sars, 1916   (M)
Ref.: Sars, 1916 (p.14, Descr.M, fig.M); Farran, 1926 (p.301, Rem.); Rose, 1933 a (p.294, figs.M, Rem.); Sewell, 1948 (p.466, Rem.); Lang, 1948 a (p.175); Vives & al., 1975 (p.56, tab.II); Kovalev & Shmeleva, 1982 (p.85); Lozano Soldevilla & al., 1988 (p.61)
Loc: G. de Gascogne, Baie Ibéro-marocaine
Lg.: M: 1,7-1,1
Rem.: Cf. Aegisthus mucronatus

Aegisthus longirostris    T. Scott, 1894   (F,M)
Ref.: T. Scott, 1894 b (p.104, figs.F,M); Lang, 1948 a (p.175)
Loc: G. de Guinée
Rem.: Cf. Aegisthus mucronatus

[2] Aegisthus mucronatus  Giesbrecht, 1891   (F,M)    [Figs]

[3] Aegisthus spinulosus  Farran, 1905   (F)    [Figs]
Rem.: The validity of this species species is doubted by Lang (1948) who considers it a juvenile of A. aculeatus. Boxshall (1979, p.206 ) who has not been in the occasion to observe specimens keeps the species valid for the moment, and comments the significant differences with A. aculeatus: absence of chitinous reticulations from the cephalothorax, the complete subdivision of the genital complex, the armature of Mxp and P6.
According to Conroy-Dalton & Huys (1999) this species is incertae sedis. There are several similarities between this species and Andromax muricatus.

Identification characters:
Female: Rostrum ending in short pointed. Anterior prosme without chitinuous net. Posterior margin of dorsal metasomal segments with a pair of spines.
(2) Andromastax Conroy-Dalton & Huys, 1999
Rem.: 2 spp.

[1] Andromastax muricatus  Conroy-Dalton & Huys, 1999   (F,M)    [Figs]

[2] Andromastax cephaloceratus  Lee & Huys, 2000   (F,M)    [Figs]
(3) Jamstecia Lee & Huys, 2000
Rem.: 1 sp.

[1] Jamstecia terazakii  Lee & Huys, 2000   (F)    [Figs]
(4) Nudivorax Lee & Huys, 2000
Rem.: 1 sp.

[1] Nudivorax todai  Lee & Huys, 2000   (F,M)    [Figs]
(5) Scabrantenna Lee & Huys, 2000
Rem.: Total: 1 sp.
For Lee & Huys (2000, p.41) this genus can be considered a transitionary genus between the more primitive genera, Nudivorx and Andromastax, and the truly planktonic Aesisthidae, Aegisthus. It shares with Aegisthus the strongly reduced mouthparts and the distally elongate antennules in the male. S. yooi is particularly reminiscent of A. aculeatus

[1] Scabrantenna yooi  Lee & Huys, 2000   (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., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed September 22, 2021]

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