Species Card of Copepod
Monstrilloida ( Order )
    Monstrillidae ( Family )
        Monstrilla ( Genus )
Monstrilla hamatapex  Grygier & Ohtsuka, 1995   (F)
Syn.: Monstrilla sp. Sekiguchi, 1982 (p.26, figs.F)
Ref.:
Grygier & Ohtsuka, 1995 (p.703, figs.F, N); Chihara & Murano, 1997 (p.1002, Pl.234: F); Ferrari & Dahms, 2007 (p.15, Rem. N); Suarez-Morales, 2011 (p.8, 11)
Species Monstrilla hamatapex - Plate 1 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in J. Crustacean Biol., 1995, 15 (4). [p.710, Fig.5].
Female (from Tanabe Bay, Japan): A, habitus (lateral; most setae omitted from appendages); B, idem (dorsal; setae omitted from A1); C, anterior end (ventral); D, right A1 (lateral view); E, posterior part of urosome (dorsal); setules omitted from all but 2 of longer caudal setae.
Abbreviations (for D, see Fig.6): an = A1 or 1st segment thereof; cg = cerebral ganglion; e, cup of nauplius eye; gs = anterior part of genital double-somite; op = oral papilla; os = ovigerous spines; ps = pit setae; s = simple seta; dc = scars.
Scale bars in mm.


Species Monstrilla hamatapex - Plate 2 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in J. Crustacean Biol., 1995, 15 (4). [p.712, Fig.6].
Female: Semischematic diagram of newly devised nomenclature of basic setal armature of A1 in female monstrilloid copepods. it is drawn in dorsal view and a little from the medial side, assuming the antennule is held in its typical orientation, pointing straight forward from the head.
There are 4 main kinds of setae: Short, tapered, often spinelike setae (1-6) are arranged more or less medially in clusters of 1-5-1-5-1-2 from proximal to distal; in each group of 5, two are more dorsal (d1-2) and three more ventral (v1-3); Long, setulose, straplike setae (II-V) are associated with the first type in groups of 0-1-2-2-3-0, respectively, and are directed dorsally (d), ventrally (v), or, in one case, medially (m). There are 2 aesthetascs (aes), 1 of them ventral (4aes), the other apical (6aes). There are 6 setae (b) of variable form subapically on the antennule's outer edge; the three more dorsal ones are often highly branched (b1-3); of the others, the middle one may be slightly branched (b5) and two are simple (b4, b6). In some species, like M. hamatapex, none of the b-setae are branched (see Fig.5D


Species Monstrilla hamatapex - Plate 3 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in J. Crustacean Biol., 1995, 15 (4). [p.713, Fig.7].
Female: A, right P1 and coupler (posterior view); B, right P2 and coupler (anterior view); ; probable length of broken seta of basis shown as dashed on left leg 2); C, left P3 with short seta on basis (arrow) (posterior view); D, left P4 and coupler (posterior view); E, basis of right P2 (posterior view; enlarged from C, showing sclerite between basis and exopod (arrow)); F, basis of right P2 (anterior view enlarged from B); G, outer apical seta and spinelike seta of exopod of right P4 (posterior view); H, P5 (anterior view, showing aberrant inner seta on right leg.
Scale bars in mm.


Species Monstrilla hamatapex - Plate 4 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in J. Crustacean Biol., 1995, 15 (4). [p.718, Table 1].
Differences between M. hamatapex and European M. helgolandica

Species Monstrilla hamatapex - Plate 5 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.499, Fig.29].
Female: Dorsal and lateral pore and pit seta patterns, from rear of cephalothorax through genital compound somite.
Symbols: dots (three sizes) = pores; larger circles = pits of pit setae.
Pattern based on SEM and light microscopical examination.

NZ: 1

Distribution map of Monstrilla hamatapex by geographical zones
Loc:
Japan (Tanabe bay)
N: 1
Lg.:
(799) F: 2,08; (866) F: 1,5-1,8; {F: 1,5-2,08}
Last update : 02/07/2013
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[Accessed December 21, 2014]

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