Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Arietellidae ( Family )
            Arietellus ( Genus )
Arietellus pavoninus  Sars, 1905   (F)
Sars, 1905 c (p.22, Descr.F); Farran, 1908 b (p.82); Sars, 1925 (p.333, figs.F); Rose, 1933 a (p.240, figs.F); Jespersen, 1940 (p.64); Sewell, 1948 (p.505); Shmeleva, 1964 a (p.1068); Vervoort, 1965 (p.151, Rem.); Moraïtou-Apostolopoulou, 1969 a (p.189, Rem.); Ohtsuka & al., 1994 (p.131, Rem.F, figs.F); Bradford-Grieve & al., 1999 (p.882, 937, figs.F); Vives & Shmeleva, 2007 (p.149, figs.F)
Species Arietellus pavoninus - Plate 1 of morphological figuresissued from : S. Ohtsuka, G.A. Boxshall & H.S.J. Roe in Bull. nat. Hist. Lond. (Zool.), 1994, 60 (2). [p.132, Fig.16, B,H].
Female (from Canary Is.): B, genital double-somite (ventral); H, praecoxal arthrite, coxal and endopod of Mx1 (endopod indicated by arrowhead). cd = copulatory duct; cp = copulatory pore; g = gonopore; rd = receptacle duct; o, oviduct; s, spermatothore remnant; sr = seminal receptacle.
Scale bars in mm.
Nota: Genital double-somite similar to that of A. plumifer, but distinguishable since seminal receptacle relatively much larger than in A. plumifer, over half length of genital double-somite. Endopod of Mx1 distinctly 1-segmented, bulbous with 1 bipinnate seta.

Species Arietellus pavoninus - Plate 2 of morphological figuresissued from : S. Ohtsuka, G.A. Boxshall & H.S.J. Roe in Bull. nat. Hist. Lond. (Zool.), 1994, 60 (2). [p.134, Fig.18,J].
Female: J, 4th to 6th endopod segments of Mxp.
Scale bar in mm.
Nota: 4th and 5th endopod segments each with reduced innermost seta, 6th segment with reduced setae (a and b)

Species Arietellus pavoninus - Plate 3 of morphological figuresissued from : S. Ohtsuka, G.A. Boxshall & H.S.J. Roe in Bull. nat. Hist. Lond. (Zool.), 1994, 60 (2). [p.133, Fig.17 B].
Female: B, P5.
Scale bar in mm.
P5 with coxae incompletely fused in right leg; endopod represented by 2 plumose setae (not so produced as in A. plumifer; exopods 1-segmented, separate from basis, carrying 1 unipinnate spine terminally.

Species Arietellus pavoninus - Plate 4 of morphological figuresIssued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.CXX, figs.1-6].
Female: 1, habitus (dorsal); 2, forehead (lateral); 3, labrum and labium (ventral view); 4, Md; 5, P5; 6, distal segments of urosome and caudal rami (dorsal).

Compl. Ref.:
C.B. Wilson, 1950 (p.167); Shmeleva, 1964 a (p.1068); De Decker & Mombeck, 1964 (p.11); Roe, 1972 (p.277, tabl. 1, 2); Deevey & Brooks, 1977 (p.156, tab. 2, Station "S"); Vives, 1982 (p.294); Kovalev & Shmeleva, 1982 (p.85); Moraitou-Apostolopoulou, 1985 (p.303, occurrence/abundance in E Mediterranean Sea, Rem.: p.313); Lozano Soldevilla & al., 1988 (p.60); Hure & Krsinic, 1998 (p.71, 102); Holmes, 2001 (p.14); Kovalev, 2006 (p.67: Lessepsian migration); Zenetos & al., 2010 (p.397); Belmonte, 2018 (p.273, Table I: Italian zones)
NZ: 10

Distribution map of Arietellus pavoninus by geographical zones
Species Arietellus pavoninus - Distribution map 3
Chart of 1996
South Africa (E), G. of Guinea, Canary Is., Azores, Sargasso Sea, off Bermuda (Station "S"), S Iceland, off W Ireland, E Medit. (S Adriatic Sea, S Aegean Sea), Red Sea, Indian, off SE Hokkaido(in Morioka, 1972 a), SW Galapagos(in C. B. Wilson, 1950)
N: 19
(1) F: 4,8; (16) F: 4,8; (24) F: 5,25; (199) F: 5,1-4,9; {F: 4,80-5,25}
Rem.: mesopelagic. Sargasso Sea: 500-1000 m (Deevey & Brooks, 1977, Station "S");

Morphological characteristics of females:
- Last thoracic segment rounded.
- Caudal setae spread, broadly divergent.
Last update : 03/12/2020
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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 May 20, 2024]

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