Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Scolecitrichidae ( Family )
            Scolecithrix ( Genus )
Scolecithrix aculeata  Esterly, 1913   (F)
Syn.: Scolecithricella aculeata : Sewell, 1948 (p.557, 563);
? Scolecithrix elephas Esterly, 1913 (p.185, Descr.F, figs.F); Brodsky, 1950 (1967) (p.265, figs.F); Bradford, 1973 (p.143); Bradford & al., 1983 (p.78, Rem.)
Amallothrix aculeata : in CalCOFI regional list (MDO, Nov. 2013, M. Ohman, comm pers.)
Ref.:
Esterly, 1913 (p.183, Descr.F, figs.F); Brodsky, 1950 (1967) (p.264, figs.F); Bradford, 1973 (p.143); Bradford & al., 1983 (p.78, Rem.); Vyshkvartzeva, 1999 (2000) (p.235, Rem.)
Species Scolecithrix aculeata - Plate 1 of morphological figuresIssued from : C.O. Esterly in Univ. Calif. Publs Zool., 1913, 11 (10). [Pl. 10, Figs. 2, 25].
Female (from S California): 2, abdomen and posterior part of thorax (lateral); 25, forhead (lateral).Nota: Bifid rostrum, each prong of which is heavy at the base and carries a delicate but stiff and sharp spine at the distal end.
The last thoracic segment is rounded at the sides and the dorsal margin of the segment is slightly concave.
Abdomen 4-segmented; genital segment nearly as long as the second, 3rd, and 4th together; anal segment short, about 1/10 the length of the 1st segment.
Mx2 with 4 penicillate sensory appendages; the others vermiform.
length of cephalothorax: 1.35 mm.


Species Scolecithrix aculeata - Plate 2 of morphological figuresIssued from : C.O. Esterly in Univ. Calif. Publs Zool., 1913, 11 (10). [Pl. 12, Figs. 63, 64].
Female: 63, P5; 64, exopod of P1.

Nota: P5 with 3 segments; the distal margins of the first two segments with rows or groups of fine spines, the 3rd segment carries a long heavy spine on the inner margin and a shorter one on the diatal end, both set with small teeth.
P5 length = 160 µm. P1 exopod length: 329 µm.

NZ: 1

Distribution map of Scolecithrix aculeata by geographical zones
Loc:
NE Pacif. (California: San Diego)
N: 1
Lg.:
(144) F: 1,8; {F: 1,80}
Rem.: Transfer probable to the genus Amallothrix.
Last update : 31/01/2015
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Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2019. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed July 23, 2019]

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