Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Heterorhabdidae ( Family )
            Neorhabdus ( Genus )
Neorhabdus capitaneus  Park, 2000   (F,M)
Park, 2000 (p.66, figs.F,M, Rem.)
Species Neorhabdus capitaneus - Plate 1 of morphological figuresissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.192, Fig.40].
Female: a, habitus (left side); b, c, urosome (left, dorsal, respectively); d, genital somite (ventral); e, masticatory edge of left Md (posterior); f, masticatory edge of right Md (posterior); g, left Mx1 (posterior); h, left Mx2 (posterior); i, right Mxp (anterior).

Nota: Prosome about 3/4 length of body and about 2.8 times length of urosome.
Cephalosome about 2/5 length of prosome.
Rostrum small bearing 2 filaments.
Urosome about 1/4 length of body.
Laterally, genital somite (Fig.40b) with a hump halfway along dorsal margin. Ventrally, genital operculum (Fig.40-d) typically with a width-length ratio of 100: 69 and about 4/9 as wide as somite itself. Genital field aith about 6 pores on each side.
2nd urosomal segment about 1/2 length of genital somite and about 1.2 times length of 3rd urosomal somite.
Anal segment only slightly longer than 3rd urosomal somite. Combined lengths of anal segment and left caudal ramus about 1.1 times length of genital somite.
Dorsally, right caudal ramus separate from anal segment by a clear line but left ramus fused with anal segment.
Left caudal ramus only slightly longer than right, its dorsal appendicular seta a little longer than that of right ramus.
A1 reaching about posterior end of anal segment. Four lobes of 1st segment with 1+2+2+2 setae and 0+1+ 20+16 aesthetes. 2nd to 19th segments each with 2 setae (1 middle and 1 distal). Normal number of aesthetes on each segment seems: segments 2-4 each with 21, segments 5 and 6 each with 25, segment 7 with 20, segment 8 with 17, segment 9 with 8, segment 10 with 2, segments 11-19 each with 1 or 2.
A2 as in N. latus, with inner marginal seta of last exopodal segment reduced to a vestige.
P1 to P5 similar to those of N. brevicornis except for details.

Species Neorhabdus capitaneus - Plate 2 of morphological figuresissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.193, Fig.41].
Female: a, P1 (anterior); b, exopod of P2 (anterior); c, exopod of P3 (anterior); d, exopod of P4 (anterior); e, P5 (anterior).

Male: f, P5 (anterior); g, left P5 (distal endopodalsegments omitted), posterior; h, right P5 (distal endopodal segments omitted), posterior.

Species Neorhabdus capitaneus - Plate 3 of morphological figuresNeorhabdus capitaneus female and male:
1 - In 3rd lobe of Mx2, anterior spine about as long as 1st terminal spine (Fig.40-h); Mx1 with 2nd inner lobe bearing 1 seta (Fig.40.g).
2 - Last exopodal segment of A2 with inner marginal seta reduced; 2nd-7th segments of A1 each with more than 20 small aesthetes.

NZ: 4

Distribution map of Neorhabdus capitaneus by geographical zones
off E Newfoundland, Mozambique Channel, Pacif. (E equatorial, Peru)

Type locality: 13°47'S, 77°49'W.
N: 1
(824) F: 13,16-11,66; M: 12; {F: 11,66-13,16; M: 12,00}
Last update : 24/01/2015
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 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., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed April 22, 2024]

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Marine Planktonic Copepods

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