Paraheterorhabdus (Paraheterorhabdus) medianus - Species Card

Species Card of Copepod

Calanoida ( Order )	details
Arietelloidea ( Superfamily )	details
Heterorhabdidae ( Family )	details
Paraheterorhabdus ( Genus )	details	List species for this Genus
Paraheterorhabdus ( Sub-Genus )	details

Paraheterorhabdus (Paraheterorhabdus) medianus (Park, 1970) (F,M)

Abbreviations or symbols

Syn.:

Heterorhabdus medianus Park, 1970 (p.477, 525, figs.F, no M); Heptner, 1972 a (p.60);
Heterochäta vipera Giesbrecht, 1889; 1892 (p.373, 383, 773, figs.M, non F);
Heterorhabdus vipera : Giesbrecht & Schmeil, 1898 (p.116, Rem. M, no F)

Ref.:

(

List of the studied authors )

Park, 2000 (p.81, figs.F,M, Rem.)

Species Paraheterorhabdus (Paraheterorhabdus) medianus - Plate 1 of morphological figures

issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.204, Fig.52].
Female: a, habitus (left side); b, urosome (dorsal); c, d, forehead (left, dorsal, respectively); e, f, genital somite (left, ventral, respectively); g, masticatory edge of left Md (posterior); h, masticatory edge of right Md (posterior); i, left Mx2 (posterior).

Species Paraheterorhabdus (Paraheterorhabdus) medianus - Plate 2 of morphological figures

issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.205, Fig.53].
Female: a, right Mxp (anterior); b, exopod of P1 (anterior); c, exopod of P5 (anterior).

Male: d, urosome (dorsal); e, P5 (anterior); f, second exopodal segment of left P5 (anterior); g, right P5 (endopod omitted), posterior; h, basipod of right P5 (anterior).

Species Paraheterorhabdus (Paraheterorhabdus) medianus - Plate 3 of morphological figures

Issued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.522, Figs.253-254]. As Heterorhabdus medianus.
Female (from Caribbean Sea & G. of Mexico): 253, habitus (lateral right side); 254, idem (dorsal).
Nota: Head and 1st thoracic segment separate, 4th and 5th fused. caudal rami asymmetrical.

Species Paraheterorhabdus (Paraheterorhabdus) medianus - Plate 4 of morphological figures

Issued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.524, Figs.255-261]. As Heterorhabdus medianus.
Female: 255, right Md (biting edge of the mandibular blade); 256, left Md (idem); 257, Mx1; 258, Mx2; 259, Mxp; 260, P1 (anterior); 261, P5 (anterior).
Nota: 2nd inner lobe and basis of Mx1, each with 1 seta; endopod with 5 setae. Penultimate lobe of Mx2 elongate and not covered by spinules.

Species Paraheterorhabdus (Paraheterorhabdus) medianus - Plate 5 of morphological figures

Issued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892. Atlas von 54 Tafeln. [Taf. 20, Fig.6]. As Heterochäta vipera.
Male: 6, exopod 3 of P3.

Species Paraheterorhabdus (Paraheterorhabdus) medianus - Plate 6 of morphological figures

Issued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.20, Figs.32, 33]. As Heterochäta vipera.
Male: 32, left P5 (anterior view); 33, right P5 (anterior view).
Nota: Same scale.

Paraheterorhabdus (Paraheterorhabdus) medianus female:
1 - Left caudal ramus distinctly longer than right and completely fused with anal segment (Fig.52-b)
2 - Dorsally, posterolateral corners of prosome rounded.

Paraheterorhabdus (Paraheterorhabdus) medianus female:
1 - Left caudal ramus distinctly longer than right and completely fused with anal segment; setation in both rami as in female (Fig.53-d).
2 - Basis of right P5 with wide, rectangular inner lobe.
3 - Exopod of right P5 with wide bilobed distal end (Fig.53-e); 2nd lobe of Mx2 (Fig.52-i) with a long seta.

NZ:

Distribution map of Paraheterorhabdus (Paraheterorhabdus) medianus by geographical zones

Distribution map of Paraheterorhabdus (Paraheterorhabdus) medianus for the Zone Indian Ocean

Loc:

(

Geographical glossary )

off W South Africa, Caribbean Sea, G. of Mexico, off Cape Verde Is., Indian (E equatorial), E Pacif. tropical (N-S), Pacif. tropical (central S-N), Salomon Is.

Type locality: Caribbean Sea and Gulf of Mexico.

Lg.:

(

References of the authors concerning dimensions )

(46) M: 2,6; (88) F: 2,6; 2,56; (824) F: 2,88-2,48; M: 2,84-2,6; {F: 2,48-2,88; M: 2,60-2,84}

Rem.:

Mesopelagic.
For Park (1970, p.527) this species shows somewhat intermediate characteristics between P. vipera (Giesbrecht, 1889) and P. robustus (Farran. 1908).

Last update : 27/01/2015


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