Pontella diagonalis - Species Card - Marine Planktonic Copepods

Pontella diagonalis C.B. Wilson, 1950 (F,M)

Taxonomy

Order Calanoida

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Superfamily Diaptomoidea

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Family Pontellidae

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Genus Pontella

details list species for this Genus

Abbreviations or symbols

Synonymy

Pontella spinipes (part.) : Wolfenden, 1905 (1906) (p.1020, Rem.F, no M); Dalal & Goswami, 2001 (p.22, fig.2)

References

List of the studied authors

C.B. Wilson, 1950 (p.292, Descr.F, figs.F); Silas & Pillai, 1973 (1976) (p.824, Descr.M, figs.F,M); Pillai, 1975 (p.131, figs.F,M, Rem.); Bradford-Grieve & al., 1999 (p.885, 960, figs.F); Mulyadi, 2000 (p.185, figs.M, Rem.M); Mulyadi, 2002 (p.92, figs.M, Rem.); Phukham, 2008 (p.87, figs.F,M); Mulyadi, 2011 (p.1515, figs.F,M)

Figures

Plate 1 Issued from : Mulyadi in The Raffles Bull. Zool., 2000, 48 (2). [p.186, Fig.4].
Male (from Jakarta Bay): a, habitus (dorsal); b, 5th metasomal somite and urosome (dorsal); c, left caudal ramus (dorsal); d, rostrum (anterior view); e, right A1; f, P5.

Species Pontella diagonalis - Plate 2 of morphological figures

Plate 2 issued from : E.G. Silas & P.P. Pillai in J. mar. biol. Ass. India, 1973 (1976), 15 (2). [p.824, Fig.22, c-d].
Female from Indian Ocean): c, urosome.

Male: d, right A1.
Scale as in Calanopia minor.

Species Pontella diagonalis - Plate 3 of morphological figures

Plate 3 issued from : E.G. Silas & P.P. Pillai in J. mar. biol. Ass. India, 1973 (1976), 15 (2). [p.823, Fig.21, e-h, l-m].
Female (from Indian Ocean): e, habitus (dorsal); f, P5, m, forehead (lateral).

Male: g, habitus (dorsal); h, P5; l, forehead (lateral).
Scale as in Calanopia minor.

Species Pontella diagonalis - Plate 4 of morphological figures

Plate 4 issued from :C.B. Wilson in Bull. U.S. natn Mus., 100, 14 (4). [Pl.28, Figs.410-413].
Female (from 5°51'N, 120°46'30''E): 410, habitus (dorsal); 411, forehead (lateral); 412, posterior prosome and urosome (left lateral); 413, P5.

Species Pontella diagonalis - Plate 5 of morphological figures

Plate 5 issued from : Mulyadi in Treubia, 2002, 32; [p.93, Fig.30].
Male (from Jakarta Bay): a, habitus (dorsal); b, metasomam somite 5 and urosome (dorsal); c, left caudal ramus (dorsal); d, rostrum (anterior view); e, right A1; f, P5.

Species Pontella diagonalis - Plate 6 of morphological figures

Plate 6 issued from : N. Phukham in Species diversity of calanoid copepods in Thai waters, Andaman Sea (Master of Science, Univ. Bangkok). 2008. [p.169, Fig.43].
Female (from W Malay Peninsula): a, habitus (dorsal); b, urosome (dorsal); c, P5.

Male: d, habitus (dorsal); e, A1; f, right P5; g, left P5.

Body length after the drawings: F = 3.882 mm; M = 3.500 mm.

Plate 7 issued from : P.P. Pillai in J. mar. biol. Ass. India, 1975, 17 (2). [p.132, Fig.1, d-i].
Female (from Indian Ocean): d, urosome (dorsal); e, cephalon (lateral); g, P5.

Male: f, cephalon (lateral); h, right A1; i, P5.

Scale bar : 0.3 mm.

Species Pontella diagonalis - Plate 8 of morphological figures

Plate 8 Issued from : Mulyadi in Crustaceana, 2011, 84 (12-13). [p.1516, Fig.2];
Female (from Jakarta Bay): a, habitus (dorsal); b, metasomal segment 5 and urosome (dorsal); c, urosome (ventral); d, metasomal segment 5 and urosome (lateral); e, forehead (lateral); f, rostrum (anterior view); g, P5 (posterior view).

Species Pontella diagonalis - Plate 9 of morphological figures

Plate 9 Issued from : Mulyadi in Crustaceana, 2011, 84 (12-13). [p.1517, Fig.3];
Male (from Jakarta Bay): a, habitus (dorsal); b, metasomal segment 5 and urosome (dorsal); c, left caudal ramus (dorsal); d, rostrum (anterior view); e, dight A1; f, P5.

Species Pontella diagonalis - Plate 10 of morphological figures

Plate 10 Issued from : J.M. Bradford-Grieve, E.L. Markhaseva, C.E.F. Rocha & B. Abiahy in South Atlantic Zooplankton, edit. D. Boltovskoy. 1999, Vol. 2, Copepoda; [p.1070, Fig. 7.391: Pontella diagonalis]. Ur = urosome; R = rostrum.
Female characters (from key, p.959):
- Genital segment with 2 rounded lobes on left side, posterior most of which is broad and covers much of left caudal ramus; ; right side with rounded lobe and posterolateral projection which is broad in lateral view.
- Genital segment is not covered in irregular ridges but has specific processes; left corner of urosome does not extend to posterior border of genital segment.
- Caudal rami unequal, enlarged on right side.
- Urosome of 2 somites.

Complementary References

List of the studied authors

De Decker & Mombeck, 1964 (p.13); Carter, 1977 (1978) (p.36); Madhupratap & Haridas, 1986 (p.105, tab.1); Pillai H.U.K. & al., 2011 (p.239, Table 3, vertical distribution);

Distribution

NZ: 2

Distribution map of Pontella diagonalis by geographical zones

Distribution map of Pontella diagonalis for the Zone Indian Ocean

Additional Maps & Charts

Species Pontella diagonalis - Distribution map 3

Map 3 issued from : P. Pillai in J. mar. biol. Ass. India, 1975, 17 (2). [p.140, Fig.5].
Occurrence of Pontella diagonalis and Pontella securifer collected from 54 stations in the Indian Ocean (See in: Hand Book to the International Zooplankton Collections, volume I, 1969).

Localisations

Geographical glossary

South Africa (E), Indian, Laccadive Is., Maldive Is., Bay of Bengal, Andaman Sea, Barren Island, W Malay Peninsula, Java (Jakarta Bay), S Philippines (off Jolo)

Type locality: off Jolo (Philippines).

Quotations

N: 16

Dimensions (mm)

References of the authors concerning dimensions

(137) F: 4; (256) F: 4,8-4,23; M: 4,15-3,94; (900) M: 3,95; (1087) M: 3,9; (1115) F: 4,24-4,94; M: 3,42-3,84; (1126) F: 4,05-4,10; M: 3,90-3,95; {F: 4,00-4,94; M: 3,50-4,15}

Remarks

epipelagic. Neritic.
For Mulyadi (2000, p.186) the present male specimen agrees with the description of the species by C.B. Wilson (1950) but slight differences were noted in having the proximal outer seta of left caudal ramus with a spur-like spine, and in the form of P5.
For Mulyadi (2011) the species is too diverse to be considered as a member of an Indo-West Pacific Pontella species group.

Last update : 08/12/2020

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