Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Arietellidae ( Family )
            Sarsarietellus ( Genus )
Sarsarietellus suluensis  Ohtsuka, Nishida & Machida, 2005   (F)
Ref.:
Ohtsuka & al., 2005 (p.2504, Descr.F, figs.F)
Species Sarsarietellus suluensis - Plate 1 of morphological figuresissued from : S. Ohtsuka, S. Nishida & R.J. Machida in J. Nat. Hist., 2005, 39 (27). [p.2505, Fig.11].
Female (from Sulu Sea): A-B, habitus (lateral anr dorsal, respectively); C, anterolateral papilla of cephalosome (arrowed in fig.A); D, rostrum (anterior) (filaments missing); E, genital double-somite (ventral); F-G, idem (right lateral and left lateral, respectively); H, A1; I, terminal segments of A1; J, A2; K, Md (mandibular cutting edge).
Scale bars in mm.

Nota: Cephalosome with round papilla anterolaterally at each side.
Rostrum possibly with pair of filaments (missing).
Prosome about 3.1 times as long as urosome; prosomal end asymmetrical, with right side more produced outward; dorsolateral and ventrolateral processes acutely pointed.
Urosome 4-segmented.
Genital double-somite slightly asymmetrical from dorsal view, but highly from ventral view; genital system remarkably asymmetrical, with right gonopore larger and more anteriorly located than left one; copulatory pore opening beneath irregular ventral protrusion on right side; copulatory duct heavily chitinized, Y-shaped; seminal receptacle tubular, terminating at round tip, about half as long as genital double-somite.
Anal somite short.
Caudal rami symmetrical, ornamented with fine setules along inner margin; seta I rudimentary, seta IV thickest (terminal part missing).
A1 symmetrical, 23-segmented, reaching posterior margin of pediger 3; 1st (ancestral I-III) to 8 (ancestral X) segments fringed with long setules along posterior margin.
A2 with unarmed coxa; basis with serrate seta at inner corner; endopod 2-segmented, 1st segment with minute seta distally, 2nd segment with 3 inner setae of unequal length and 1 reduced and 5 ordinary terminal setae; exopod indistinctly 8-segmented, setal formula 0, 1, 1, 1, 1, 1, 0, 3 (1 vestigial).


Species Sarsarietellus suluensis - Plate 2 of morphological figuresissued from : S. Ohtsuka, S. Nishida & R.J. Machida in J. Nat. Hist., 2005, 39 (27). [p.2506, Fig.12].
Female: A, Md (mandibular palp; phoront of apostome ciliate (?) indicated by arrowed); B, phoront of apostome ciliate (?) on mandibular palp; C, Mx1; D, Mx2; E, basal spine of Mx2; F, Mxp (some setae omitted); G, 4th endopodal segment of Mxp (only smallest seta illustrated); H, 5th endopodal segment of Mxp (largest seta omitted).
Scale bars in mm.

Nota: Md with 2 mono- and 1 bicuspid teeth and 2 patches of setules along cutting edge; patch of long setules present near base of palp (not shown in fig.11K); endopod 1-segmented, with 1 well-developed and 1 rudimentary seta; exopod 5-segmented, setal formula 1, 1, 1, 1, 2.
Mx1 with praecoxal arthrite bearing 5 naked spines, 1 process and patch of long spinules; coxal endite bearing serrate seta; coxal epipodite with 8 setae; basis with 2 rows of long setules and 1 vestigial seta; endopod 1-segmented, bulbous, with 2 serrate unequal setae terminally; exopod 1-segmented, lobate, with 3 long setae (1 missing in figure 12C) terminally.
Mx2 with 1st praecoxal endite bearing 2 setae and 1 vestigial element; 2nd praecoxal to 2nd coxal endites each with 2 serrate setae; basis elongated, bearing relatively short spine with 2 longitudinal rows of fine setules; endopod indistinctly 4-segmented, with setal formula 1, 3, 2, 2.
Mxp with syncoxa bearing 1 middle and 2 subterminal serrate setae and patch of fine spinules; basis protruded midway, with 2 serrate setae and patch of fine spinules; 1st endopodal segment nearly incorporated into basis, with serrate seta; 2nd to 5th endopodal segments bearing 4, 4, 3, and 3 setae, respectively; 2nd endopodal segment elongate; terminal endopodal segment with reduced seta a and long seta b (fig.12H)


Species Sarsarietellus suluensis - Plate 3 of morphological figuresissued from : S. Ohtsuka, S. Nishida & R.J. Machida in J. Nat. Hist., 2005, 39 (27). [p.2507, Fig.13].
Female: A, P1 (anterior); B, endopod of P1 (anterior); C, P2 (anterior); D, outer distal corner of 2nd endopodal segment of P2; E, P3 (anterior); F, P4 (posterior); G, P5 (posterior).
Scale bars in mm.

Nota: P5 almost symmetrical, with coxae and intercoxal sclerite completely fused to form common base; basis bearing plumose seta near outer middle margin on posterior surface; endopod represented by process carrying 4 plumose setae, acutely pointed at tip; exopod 1-segmented, with 1 long, terminal and 4 short, outer spines; terminal right process of exopod slightly longer than left one.

NZ: 1

Distribution map of Sarsarietellus suluensis by geographical zones
Loc:
Sulu Sea (central)

Type locality: 08°57.31'N, 120°11.31'E.
N: 1
Lg.:
(983) F: 3,08; {F: 3,08}
Rem.: hyperbenthic (1516 m).
Last update : 31/01/2015
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