Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Heterorhabdidae ( Family )
            Heterostylites ( Genus )
Heterostylites nigrotinctus  (Brady, 1918)   (F,M)
Syn.: Heterorhabdus nigrotinctus Brady, 1918 (p.27, Rem.M, figs.M); Sewell, 1948 (p.575, Rem.); Razouls & al., 2000 (p.343, tab. 2, Appendix);
Heterostylites major : Vervoort, 1951 (p.140, figs.M)
Ref.:
Ohtsuka & al., 1997 (p.593, Rem.); Park, 2000 (p.1, 44, figs.F,M); Park & Ferrari, 2009 (p.143, Table 3, 8, Appendix 1, biogeography)
Species Heterostylites nigrotinctus - Plate 1 of morphological figuresissued from : T. Park Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.174, Fig.22].
Female: a, habitus (left side); b, c, urosome (left, dorsal, respectively); d, forehead (dorsal); e genital somite (ventral).

Nota: Prosome length 3.00 mm.


Species Heterostylites nigrotinctus - Plate 2 of morphological figuresissued from : T. Park Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.175, Fig.23].
Female: a, P5 (anterior).

Male: b, P5 (anterior); c, P5 (with endopods omitted), posterior; d, e, second exopodal segment of right P5 (anterior, posterior, respectively).


Species Heterostylites nigrotinctus - Plate 3 of morphological figuresissued from : W. Vervoort in Verh. K. ned. Akad. Wet., Afd. Natuurk., 1951, (Sect. 2) 47 (2). [p.141, Fig.78]. As Heterostylites major.
Male (from ± 66.5 °S, 11°W): habitus (lateral).


Species Heterostylites nigrotinctus - Plate 4 of morphological figuresissued from : W. Vervoort in Verh. K. ned. Akad. Wet., Afd. Natuurk., 1951, (Sect. 2) 47 (2). [p.142, Fig.79]. As Heterostylites major.
Male: P5 (anterior aspect; lt = left foot, rt = right foot).


Species Heterostylites nigrotinctus - Plate 5 of morphological figuresHeterostylites nigrotinctus female:
1 - Dorsally, genital somite widest posteriorly.


Species Heterostylites nigrotinctus - Plate 6 of morphological figuresHeterostylites nigrotinctus male: 1 - Basal lobe of right P5 long (Fig.23-b); basal lobe of left P5 relatively long and rounded.
2 - Basal lobe of left P5 relatively large (Fig.23-b).

NZ: 2

Distribution map of Heterostylites nigrotinctus by geographical zones
Loc:
Antarct. (Drake Passage, Atlant., Indian, off S Tasmania).

Type locality: 64°34'S, 127°08'E.
N: 4
Lg.:
(31) M: 4,08; 3,75; (247) M: 5; (824) F: 4,64-4,44; M: 4,36; {F: 4,44-5; M: 3,75-4,36}
Rem.: epi-mesopelagic.
After T. Park (2000, p.45) the male described by Vervoort (1951) as H. major from the Atlantic sector of the Antarctic undoubtedly belongs to H. nigrotinctus according to the close similarity in P5.
Park et Ohtsuka & al. (1997) do not agree on a synonymy with Heterostylites major.
For Ohtsuka & al. (1997, p.593) this species is poorly descibed from a single male. Based on his illustrations of the right and left Md and Mx2, the body length (5 mm), this species must be treated as a junior subjective synonym of Heterostylites major (Dahl, 1894).
Last update : 06/01/2015
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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 January 23, 2021]

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