Species Card of Copepod
Monstrilloida ( Order )
    Monstrillidae ( Family )
        Maemonstrilla ( Genus )
Maemonstrilla polka  Grygier & Ohtsuka, 2008   (F)
Ref.:
Grygier & Ohtsuka, 2008 (p.470, figs.F)
Species Maemonstrilla polka - Plate 1 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.471, Fig.7, A].
Female (paratype from Ishigaki Island): A, habitus (lateral; some legs removed).
Scale bar = 1.0 mm.


Species Maemonstrilla polka - Plate 2 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.462, Fig.1, A].
Body form of females from Ishigaki Island, with explanation of segmental terminology and measurements taken in lateral view [in dorsal view see Maemonstrilla turgida].
Abbreviations: al, antennal length; ch, cephalothorax height; cl, cephalothorax length; ml, metasome length; ul, urosome length.
Scale bar = 0.500 mm.


Species Maemonstrilla polka - Plate 3 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.471, Fig.7, B, C].
Female: B, oral papilla (o) and scars (arrow) (left lateral view); C, detail of scars.
Scale bars = 0.100 mm (B); 0.010 mm (C).


Species Maemonstrilla polka - Plate 4 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.472, Fig.8].
Female: right A1 (ventral view) (setules omitted, setal designation after Grygier & Ohtsuka, 1995, fig.6).
Scale bar = 0.100 mm.


Species Maemonstrilla polka - Plate 5 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.471, Fig.7, D].
Female: D, left A1 (outer view), foreshortened due to viewing angla, more distal segments numbered (2-4), arrw indicating branches of b5-seta.
Scale bar = 0.100 mm.


Species Maemonstrilla polka - Plate 6 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.473, Fig.9, D]. SEM.
Female: D, genital compound somite and penultimate segment of urosome (lateral view), anterior to left, showing apron-like posteroventral protrusion of compound somitre (arrow).
Scale bar = 0.050 mm.


Species Maemonstrilla polka - Plate 7 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.474, Fig.10]. SEM.
Female: A, dorsal surface of posterior part of cephalothorax and free pedigers 1 and 2, anterior at top; B, dorsal surface of free pedigers 3 and 4, anterior at top; C, dorsal surface of penultimate segment and telson (t) of urosome, anterior at top; D, proximal part of coxa of P1, showing spinulose outer lobes (arrows), anterior to left.
Scale bars = 0.100 mm (A, B); 0.020 mm (C, D).


Species Maemonstrilla polka - Plate 8 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.475, Fig.11].
Female: A, right P1 (anterior); B, left P2 (posterior); C, outer apical exopodal seta of left P2; D, right P3 (anterior); E, left P4 (posterior).
Slide-mount of legs P1 to P4, showing diagnostic red spots and invaginations or vestigial buttons replacing proximal inner endopodal seta of each leg (arrows), setules omitted and some setae cut short.
Scale bar = 0.200 mm (A, B, D, E); 0.100 mm in C.


Species Maemonstrilla polka - Plate 9 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.473, Fig.9, E]. SEM.
Female: E, P5 (arrow).
Scale bar = 0.100 mm.


Species Maemonstrilla polka - Plate 10 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.476, Fig.12]. SEM.
Female: A, basis and 1st exopodal segment of P1, outer view, proximal at top and anterior to right, showing 1 seta on each segment, anterior pore near basis seta (arrow), and spinules patches on exopod; B, 3rd segment of endopod (right) and exopod (left) of P2, anterior view showing distal pore on each segment (arrows); C, proximal endopodal segment of P2, anterior view, showing vestigial button-like seta (arrow); D, detail of outer apical exopodal seta.
Scale bars = 0.020 mm (A-C); 0.010 mm in D.


Species Maemonstrilla polka - Plate 11 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.


Species Maemonstrilla polka - Plate 12 of morphological figuresissued from : M.J. Grygier & S. Ohtsuka in Zool. J. Linnean Soc., 2008, 152. [p.477, Fig.13, A].
A, ovigerous female (holotype from Ishigaki Island).
photomicrographs of preserved specimen.
Scale bar = 0.500 mm.
Nota: In lateral view, egg mass appearing bigger than copepod itself (e.g. 2.07 mm long, 1.28 mm high), but width slightly less than half that of cephalothorax (within which all eggs were formerly stored). Mean egg diameter 0.0344 mm (n = 15).

NZ: 1

Distribution map of Maemonstrilla polka by geographical zones
Loc:
S Japan (Ishigaki Island)
N: 1
Lg.:
(1077) F: 2,56-2,66 * $: sum of lengths of cephalothorax, metasome and urosome.
Last update : 22/08/2011
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Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2014. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Available at http://copepodes.obs-banyuls.fr/en 
[Accessed November 01, 2014]

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