Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Pseudochirella ( Genus )
Pseudochirella bilobata  Vervoort, 1949   (F)
Vervoort, 1949 (p.38, Descr.F, figs.F); Bradford & Jillett, 1980 (p.66); Markhaseva, 1989 (p.39); 1996 (p.258, figs.F)
Species Pseudochirella bilobata - Plate 1 of morphological figuresIssued from : W. Vervoort in Zool. Verh., Leiden, 1949, 5. [p. 39, Fig.18].
Female (from Flores Sea): a, forehead (lateral); b, distal thoracic segments and urosome (dorsal); c, idem (lateral right side); d, idem (left side).

Nota: The length of the urosome is contained 3.42 times in that of the anterior portion of the body. Head and 1st thoracic segment, 4th and 5th separated. The abdominal segments and furca in the proportional lengths 43:21:16:6:14 = 100. A1 (24-free segments) reaches the distal margin of the 1st urosomal segment. A2: endopod much shorter than in other species, nearly 2/5 the length of the exopod.

Species Pseudochirella bilobata - Plate 2 of morphological figuresIssued from : E.L. Markhaseva in USSR Acad. Sci., Zool. Inst., Explor. Fauna Seas. Marine Plankton, 1989, 41 (49). [p.53, Fig.19].
Female: Thoracic segment 5 and genital segment.
Nota from the key:
1 - Genital segment strongly asymmetrical.
2 - Both left and right thoracic posterior corners without spines.
3 - Thoracic posterior corners triangular shape (lateral view).
4 - Segment genital with protuberance in its posterior part.

Complement female after Markhaseva (1996, p.258): Cephalothorax 3.4 times longer than urosome.
Posterior corners of last thoracic segment ptolonged into triangular lobes (lateral view).
Genital segment dlightly asymmetrical, with lateral projections of different shape and size on the right and on the left posteriorly (dorsal view); ventral swelling strongly protruded (lateral view).
A1 reaching posterior border of genital segment.
Exopodite of P1 clearly 3-segmented.
Coxopodite of P4 with 14 spines.

NZ: 1

Distribution map of Pseudochirella bilobata by geographical zones
Species Pseudochirella bilobata - Distribution map 2Issued from : E.L. Markhaseva in Issled. Fauny Morei, 1989, 41 (49). [p.59, Fig.17].
Geographical distribution of P. bilobata from Vervoort, 1949.
Indonesia (Flores Sea).

Type locality: 8°00'S, 121°41'E.
N: 1
(41) F: 5,05; {F: 5,05}
Rem.: bathypelagic.
The species resembles P. scopularis and P. pustulifera.
Last update : 30/01/2015
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 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., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed May 25, 2024]

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Marine Planktonic Copepods

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