Species Card of Copepod
Monstrilloida ( Order )
    Monstrillidae ( Family )
        Cymbasoma ( Genus )
Cymbasoma sp.  Suarez-Morales & McKinnon, 2016   (F)
Suarez-Morales & McKinnon, 2016 (p.120, Descr. F, Rem.)
Species Cymbasoma sp. - Plate 1 of morphological figuresIssued from : E. Suarez-Morales & A.D. McKinnon, in Zootaxa, 2016, 4102 (1). [p.121, Fig.70].
Female (from 38°26.792'S, 145°18.496'E): A-B, habitus (lateral and dorsal, respectively); C, cephalic region (lateral), ventral medial protuberance marked by asterisk; D-E, urosome (ventral and dorsal, respectively); F, detail of P5.
Scale bars: 200 µm (A, B); 100 µm (C-E); 50 µm (F).

Nota: Cephalothorax representing 66 % of total body length.
- Midventral oral papilla weakly protuberant, located at 31 % of cephalothorax length.
- Pair of relatively small ocelli present, pigment cups moderately developed, separated by 1.3 times an eye diameter, weakly pigmented; ventral cup about 1.5 times as long as lateral cups.
- Cephalic area aws wide as cephalothorax, with flat ''forehead'' ornamented with transverse wrinkles
- Pair of frontal sensilla present.
- Urosome consisting of 5th pedigerous somite, genital double-somite and anal somite, representing 14 % of total body length
- Genital double-somite longest of urosome, ventrally protuberant, with lateral margins expanded into globose shape; ventral surface ornamented with few transverse wrinkles ar insertion of ovigerous spines
- Ovigerous spines paired, basally separated, slender0 straight at their bases, relatively short: 29 % of total body length.
- Anal somite shortest of urosome, with no constriction; dorsal and ventral surfaces smooth.
- Caudal ramus subrectangular, about 1.3 times as long as wide, armed with 3 caudal setae; ramus slightly longer than anal somite.
- A1 broken off, only the first two segments of the left A1 remaining.
- P5 medially conjoined, bilobate; outer (exopodal) lobe elongate, cylindrical, distally truncate; armed with 2 equally long apical setae. Inner lobe arising basally, short, unarmed, reaching about halflength of exopodal lobe.

Species Cymbasoma sp. - Plate 2 of morphological figuresIssued from : E. Suarez-Morales & A.D. McKinnon, in Zootaxa, 2016, 4102 (1). [p.122, Fig.71].
Female: A, P1; B, P2; C, P3 with coxal plate.
Scale bars: 100 µm (A-C).

Nota: Intercoxal sclerites of P1-P4 subrectangular, surface with patches of minute spinules, posterior margin smooth.
- Basis of P1-P4 with hair-like lateral seta; on P3, this seta sparsely setulose, about 4 times longer, thicker than those on other legs.

Species Cymbasoma sp. - Plate 3 of morphological figuresIssued from : E. Suarez-Morales & A.D. McKinnon, in Zootaxa, 2016, 4102 (1). [p.123].
Female: Armature formula of the swimming legs P1 to P4.
Roman numerals = spines; Arabic numerals = setae.

NZ: 1

Distribution map of Cymbasoma sp. by geographical zones
SE Australia (Western Port Bay)

Type locality: 38°26.792' S, 145°18.496' E.
N: 1
(1198)*: F: 1,35; {F: 1,35}

* Body length measured from the anterior end cephalothorax to the posterior end of the anal somite.
Rem.: For Suarez-Morales & McKinnon (2016, p.123) the absence of A1 (only the first two segments of the left A1 remaining) prevented a full description of this species. It appears to belong to the group of Australian Cymbasoma species that have an outer lobe of the P5 armed with 2 setae (i; e. the agoense group). It has certain affinities with members of this group and possibly represents another undescribed species.
Last update : 21/07/2016
    to add your remark

 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., 2005-2022. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed January 22, 2022]

© copyright 2005-2022 Sorbonne University, CNRS

CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
Sorbonne Université


Version française
English version



On the WEB of CNRS


Marine Planktonic Copepods

Marine Planktonic Copepods


Imprimer Contact Accueil Plan du site Accès restreint Retour Une du Labo Imprimer Contact Plan du site Crédits Téléchargez les Plug-Ins