Species Card of Copepod
Monstrilloida ( Order )
    Monstrillidae ( Family )
        Monstrillopsis ( Genus )
Monstrillopsis ferrarii  Suarez-Morales & Ivanenko, 2004   (F)
Ref.:
Suarez-Morales & Ivanenko, 2004 (p.38, figs. F); Suarez-Morales & al., 2006 (p.101, 106, Tab.1)
Species Monstrillopsis ferrarii - Plate 1 of morphological figuresissued from : E. Suarez-Morales & V.V. Ivanenko in Arctic, 2004, 57 (1). [p.39, Fig.2].
Female (from White Sea): A-C, habitus (dorsal, lateral and ventral, respectively).
Nota: The 1st pedigerous somite is cephalically incorporated. Urosome with 4 somites


Species Monstrillopsis ferrarii - Plate 2 of morphological figuresissued from : E. Suarez-Morales & V.V. Ivanenko in Arctic, 2004, 57 (1). [p.39, Fig.3].
Female: A, cephalic area (lateral; showing cuticular ornamentation); B, idem (dorsal; showing cuticular protuberances and ornamentation); C, cephalic area (lateral; paratype); D, idem (dorsal; paratype).
Nota: Oral papilla slightly protuberant, located less than 21 % of way back along ventral surface. Pair of ocelli present, with pigment cups medially conjointed, well developed. Cephalic segment with irregular cuticular protuberances on forehead. Sensilla not observed on cephalic area.


Species Monstrillopsis ferrarii - Plate 3 of morphological figuresissued from : E. Suarez-Morales & V.V. Ivanenko in Arctic, 2004, 57 (1). [p.40, Fig.4].
Female: A, cephalic area (ventral); B, right A1 (dorsal; with some elements identifid following the nomenclature of Grygier & Ohtsuka, 1995); C, left A1 (dorsal); with complementary labels of antennular elements); D, 1st pedigerous somite, genital double-somite, and two free urosomites (lateral).


Species Monstrillopsis ferrarii - Plate 4 of morphological figuresissued from : E. Suarez-Morales & V.V. Ivanenko in Arctic, 2004, 57 (1). [p.40, Fig.5].
Female: A: P5 (ventral view); B, P1; C, P2; D, P3; E, P4; F, habitus (lateral).
A, F: paratype; B-E: holotype. The setae of swimming legs 1, 3 and 4, 5 are cut short.
Nota: A1 4-segmented


Species Monstrillopsis ferrarii - Plate 5 of morphological figuresissued from : E. Suarez-Morales & V.V. Ivanenko in Arctic, 2004, 57 (1). [p.41, Fig.6].
Female: A, urosome including 5th pedigerous, genital double-somite, and two free somites (ventral); B, idem (lateral); C, idem (dorsal); D, P5 (lateral view); E, idem (lateral view); F, idem (anterior view).
A, C, D, F, holotype; B, E: paratype.
Nota: P5 medially conjointed at the base and unsegmented, each consisting of a relatively large outer (exopodal) lobe and an inner (endopodal), digitiform, amost thumb-shaped lobe; the endopodal lobe reaches at most the distal margin of the exopodal lobe; 3 exopodal setae present, all unusually long, the outermost two longest, reaching the level of the proximal 1/3 of the caudal rami; the innermost seta slightly thinner and abour 35 % shorter than the outer ones; all 3 setae biserially and sparsely setulated.


Species Monstrillopsis ferrarii - Plate 6 of morphological figuresissued from : E. Suarez-Morales & V.V. Ivanenko in Arctic, 2004, 57 (1). [p.41, Fig.7].
Female: A, semilateral view of anterior part of cephalothorax (showing posteriorly fading cuticular pattern); B, detail of anterior-ventral cuticular processes and wrinkles.
Scale bars = 0.100 mm in A and 0.045 mm in B.


Species Monstrillopsis ferrarii - Plate 7 of morphological figuresissued from : E. Suarez-Morales & V.V. Ivanenko in Arctic, 2004, 57 (1). [p.42, Table 1].
Comparison of taxonomic features and morphometry in females of selected species of Monstrillopsis.
A1 = antennule; AN = anal somite; CT = cephalothorax; FP = 1st pediger; GS = genital double-somite; LA = last antennular segment; TL = total length; UR = urosome. All ratios are presented in percentage form.


Species Monstrillopsis ferrarii - Plate 8 of morphological figuresIssued from : E. Suarez-Morales, A. Bello-Smith & S. Palma in Zool. Anz., 2006, 245. [p.103, Table 1]. Structural characteristics.
Morphological characters for comparative morphology of the species assigned to the genus Monstrillopsis by different authorities. See : dubioides, M. fosshageni, M. reticulata, M. sarsi, Cymbasoma gracilis, M. dubia, M. zernovi, M; angustipes, Monstrillopsis sp.

Key for the identification of the currently known species of Monstrillopsis (female only) after Suarez-Morales & al. (2006, p.105):
1 - Outer lobe of P5 without distal elongation; last antennular segment less than the 45% of A1 length ; body length less than 3 mm...... 2.
2 - Anterior half of 5th pedigerous soùmite laterally protuberant; lateral margins of genital double-somite expanded proximally; A1 representing less than 20% of total body length; 4 caudal setae...... 3.
4 - Outer and middle exopodal setae of P5 equally long, inner seta relatively long, slightly shorter than other two setae; dorsal cephalic surface strongly corrugated; urosomal somites with well-developed pattern of cuticular wrinkles; body length over 2.5 mm.

Compl. Ref.:
Suarez-Morales, 2011 (p.12)
NZ: 1

Distribution map of Monstrillopsis ferrarii by geographical zones
Loc:
Arctic : White Sea (Kandalaksha Bay)
N: 1
Lg.:
(939) F: 1,98-2,56 [without Furca]; {F: 1,98-2,56}
Rem.:
See remarks in Suarez-Morales & al. (2006, p.101) concerning comparison with M. chilensis.
Last update : 07/03/2020
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2022. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed January 20, 2022]

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