Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Discoidae ( Family )
            Disco ( Genus )
Disco triangularis  Markhaseva & Kobosokova, 1998   (F)
Ref.:
Markhaseva & Kobosokova, 1998 (p.45, Descr.F, figs.F)
Species Disco triangularis - Plate 1 of morphological figuresissued from : E.L. Markhaseva & K.N. Kosobokova in Zoosyst. Ross., 1998, 7 (1). [p.46, Figs.1-15].
Female (from 81°12'N, 150°14'E): 1-2, habitus (dorsal and lateral, respectively); 3-4, forehead (ventral and lateral, respectively); 5-6, pediger segment 5 and urosome (dorsal and lateral, respectively); 7, pediger segment 5 and genital segment (ventral); 8, anal segment and caudal rami (ventral); 9, A1 (1st-16th segments); 10, A1 (17th-25th segments); 11, A2; 12, right Md (mandibular palp); 13, left Md (rhathobase); 14, right Mx1; 15, right Mx2.
Scale bars: 0.1 mm.

Nota : Rostrum absent. A1 25-segmented, reaching the pedigerous segment 3. Prosome nearly 3.6 times as long as urosome. Pedigerous segment 4 and 5 completely fused. A2 exopod 8-segmented. Md basis without seta, endopodite 1 with 2, endopodite 2 with 8 setae , exopodite with 4 setae at each of the incompletely separated exopod 1-4 segments and 2 terminal setae at exopodite 5 ; gantobase reduced with 2 teeth. Mx1 reduced to outer lobe 1 and apparently inner lobe 1. Mx2 reduced to 2 endites with 2 setae each, distal part of Mx2 with 2 setae. Caudal ramus with 1 ventral seta and 4 caudal setae.


Species Disco triangularis - Plate 2 of morphological figuresissued from : E.L. Markhaseva & K.N. Kosobokova in Zoosyst. Ross., 1998, 7 (1). [p.47, Figs.16-21].
Female: 16, right Mxp; 17, left Mxp; 18-21, P1 to P4.
Scale bars: 0.1 mm.

Nota : Mxp with 3 setae at coxa distally, basis with 2 setae, endopod 5-segmented (setal formula : 1, 1, 1, 1, 3), endopodite 4 with distal lobe.

Compl. Ref.:
Kosobokova & Hirche, 2000 (p.2029, tab.2); Kosobokova & Hopcroft, 2010 (p.96, Table 1, fig.7); Kosobokova & al., 2011 (p.29, Table 2, Rem.: Arctic Basins)
NZ: 1

Distribution map of Disco triangularis by geographical zones
Loc:
Arctic (Amundsen, Makarov Basin, Canada Basins)
N: 4
Lg.:
(779) F: 1,4-1,35; {F: 1,35-1,40}
Rem.: In vertical haul from Makarov Basin: 2600-1000 m.
Last update : 03/01/2015
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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 January 28, 2022]

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