Species Card of Copepod
Monstrilloida ( Order )
    Monstrillidae ( Family )
        Cymbasoma ( Genus )
Cymbasoma specchii  Suarez-Morales, Goruppi, Olazabal & Tirelli, 2017   (F)
Ref.:
Suarez-Morales & al., 2017 (p.1801, Descr.F, figs.F,Rem.)
Species Cymbasoma specchii - Plate 1 of morphological figuresIssued from : E. Suarez-Morales, A. Goruppi, A. de Olazabal & V. Tirelli in J. Nat. Hist., 2017, 51 (31-32) [p.1802, Fig.3].
Female (from Trieste): a-b, habitus (dorsal and lateral, respectively); c, cephalic region (ventral); d, same, preoral ventral surface and oral papilla (lateral view); e, A1 with armature (dorsal view); f, urosome with P5 (lateral); g0, same (ventral); h, same, dorsal view showing posterolateral expansion on genital double-somite.
Scale bars: 200 µm (a, b); 50 µm (c,d); 100 µm (e-h).

Nota: - Cephalothorax representing 60 % of total body length (caudal rami excluded).
- Midventral oral papilla located at 26 % of cephalothorax length.
- Pair of relatively large ocelli present, pigment cups well developed, medially conjoined, strongly pigmented ventral cup slightly larger than lateral cups.- Cephalic cuticular ornamentation including pair of unguiform scars between bases of A1.
- Urosome of 3 urosomites, together representing 17 % of total body length (caudal rami excluded), relative lengths 25 : 43 : 32 = 100.
- P5 inserted on distal 1/3 of somite showing a medial constriction.
- Genital double-somite constricted, anterior half expanded; posterior lateral margins produced into rounded processes (arrow in figure 3h)
- Anal somite about 74 % as long as genital double-somite, medially constricted, with transverse lateral ridges.
- Caudal ramus subquadrate, 1.1 times longer than wide, armed wxith 3 subequally long, sparsely setulated caudal setae.
- Ovigerous spines, relatively short, 19 % of yotal body length (caudal rami excluded); spines basally separated, relatively wide, robust, one slightly longer than the other, straight at their base and along shaft, both tapering distally.
- A1 representing about 21 % of total body length (caudal rami excluded) and 34 % of cephalothorax length; 4-segmented, suture between segments 3 and 4 present; relative length of distal antennulary segment 42 %; pattern described by Grygier & Ohtsuka (1995), setae (Roman numerals), spines (Arabic numerals).
- Pedigerous somites 2-4, together 21 % of total body length in dorsal view.
P5 basally separate, distinctly bilobate, inner (endopodal) lobe conspicuous, unarmed, arising proximally, reaching slightly beyond midlength of long outer lobe. Outer (exopodal) lobe elongated, slender, armed with 3 subequally long setae on distal position, innermost slightly longer than adjacent setae.


Species Cymbasoma specchii - Plate 2 of morphological figuresIssued from : E. Suarez-Morales, A. Goruppi, A. de Olazabal & V. Tirelli in J. Nat. Hist., 2017, 51 (31-32) [p.1804].
Female: Armature of swimming legs P1 to P4.

Nota:
- P1-P4 slightly increasing in size posteriorly; intercoxal sclerites subrectangular, smooth; P1-P4 articulating with large, rectangular coxa along oblique line; with outer basipodal seta; on P3, this seta is about 3.5 times longer than in the other legs, biserially setulated from proximal 1/3 and slightly thicker than yjose on the other legs. Endopods and exopods of P1-P4 triarticulated. Ramal setae all biserially plumose except spiniform outer seta on exopodal segments 1 and 3, and inner seta on 1st exopodal segment, these latter being short, slender, and sparsely setulated ; also, outermost apical exopodal setae of P1-P4 with inner margin ornamented with short setules, outer margin spinulose.

NZ: 1

Distribution map of Cymbasoma specchii by geographical zones
Loc:
Adriatic Sea (off G. of Trieste coast)
N: 1
Lg.:
(1206*)F: 1
Rem.: For Suarez-Morales & al. (2017, p.1804), this species belongs to the C. rigidum species-complex by its possession of 3 subequal setae on P5 and a well-defined P5 inner lobe, among other characters (Suarez-Morales, 2006).
The incomplete original description of C. rigidum by Thompson (1888) from the Canary Islands is an obstacle to morphologically define the true C. rigidum.
Last update : 06/11/2017
    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., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed June 13, 2021]

© copyright 2005-2021 Sorbonne University, CNRS

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

 

Version française
English version

 

Search

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