Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Phaennidae ( Family )
            Xanthocalanus ( Genus )
Xanthocalanus amabilis  Tanaka, 1960   (F)
Ref.:
Tanaka, 1960 a (p.90, Descr.F, figs.F); Bradford & al., 1983 (p.71)
Species Xanthocalanus amabilis - Plate 1 of morphological figuresissued from : O. Tanaka in Publ. Sero Mar. Biol. Lab., 1960, VIII (1). [p.91, Fig.84].
Female (from Sagami Bay, Japan): a, habitus (dorsal); b, forehead (lateral); c, last thoracic segment and urosome (lateral left side); d, genital segment (ventral); e, rostrum (anterior view); f, Md (cutting edge); g, P1; h, P2; i, endopod of P3; j, P5.

Nota: Head and 1st thoracic segment separate, 4th and 5th separated.
Lateral distal corner of the last thoracic segment produced into a small pointed tooth.
Cephalothorax 2.04 mm; abdomen 0.62 mm.
The abdominal segments and furca in the proportions 37 : 26 : 17 :6 : 14 = 100.
The first 3 abdominal segments are furnished with fine teeth on the distal margin.
A2 with the exopodite 1.3 times as long as the endopodite (41 : 31).
Md exopodite as long as the endopodite.
Mx1 with 9 setae on the outer lobe, 10 setae on the exopodite, 4+2+2 setae on the endopodite, 5 setae on the 2nd basal segment.
Mxp: proportions of segments 400 : 367 : 55 : 78 : 45 : 33 : 22 = 1000.
P5 3-segmented, sfhort and tumid; 1st sefment slightly longer than wide, with groups of spinules on the inner margin; 2nd segment swollen, about as long as wide, with short spinules on the inner margin and longer ones on the outer distalhalf of the segment, these spinules more densely fusnished on the anterior surface; 3rf segment with 4 marginal spines of which the inner one the longest; the segment furnished with groups of spinules on the anterior surface


Species Xanthocalanus amabilis - Plate 2 of morphological figuresissued from : O. Tanaka in Publ. Sero Mar. Biol. Lab., 1960, VIII (1). [p. 91].
Female: Proportions of segments of A1.

Nota: A1 24-segmented, extends back to the distal margin of the 2nd abdominal segment.

NZ: 1

Distribution map of Xanthocalanus amabilis by geographical zones
Loc:
Japan (Sagami Bay)
N: 1
Lg.:
(4) F: 2,66; {F: 2,66}
Rem.: For Tanaka (1960, p.92) the species resembles X. obtusus and closely related to X. fallax. In the haul 0-1000 m.
Last update : 02/02/2015
    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 May 28, 2022]

© copyright 2005-2022 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