Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Scolecitrichidae ( Family )
            Amallothrix ( Genus )
Amallothrix lobophora  (Park, 1970)   (F, ?M)
Syn.: Scolecithricella lobophora Park, 1970 (p.476, 511, Descr.F, figs.F); Bradford, 1973 (p.143); Bradford & al., 1983 (p.78); Vyshkvartzeva, 1989 (p.7, Rem.); Ferrari & Steinberg, 1993 (p.483, figs.F, juv., p.488: Rem: a doubt subsists concerning the male attribution mâle at this species by Roe); Suarez-Morales & Gasca, 1998 a (p.111); Hernandez-Trujillo & Esqueda-Escargera, 2002 (in Appendix); Vives & Shmeleva, 2007 (p.794, figs.F, Rem.)
? Roe, 1975 (p.329, Descr. M, figs.M, Rem.); Vives, 1982 (p.292); Vyshkvartzeva, 1999 (2000) (p.235, 236: Rem.)
Species Amallothrix lobophora - Plate 1 of morphological figuresIssued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.512, Figs.188-192]. As Scolecithricella lobophora.
Female (from G. of Mexico); 188, habitus (dorsal); 189, idem (lateral left side); 190, posterior part of metasome (lateral left side); 191, forehead (lateral); 192, rostrum (anterior view).
Nota: First metasomal segment produced dorsodistally into a lobe. Posterolateral corner of metasome in lateral view produced into a triangular lobe ocverlapping proximal half of genital segment. Rostrum biramous, strong.

Species Amallothrix lobophora - Plate 2 of morphological figuresIssued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.513, Figs.193-201]. As Scolecithricella lobophora.
Female: 193, A2; 194, Md; 195, Mx1; 196, distal part of Mx2; 197, Mxp; 198, P1 (anterior); 199, P2 (distal part of endopod broken off), posterior; 200, P3 (posterior); 201, P5.
Nota: Exopod of A2 7-segmented. Basis of Md with 2 long setae, mandibular blade bearing proximally a row of spines. Mx1: 1st and 2nd inner lobes with 2 and 4 setae, respectively; basis with 5 setae; endopod with 3 +7 setae; exopod with 8 setae. Mx2 with 5 short and 3 long vermiform structures on distal portion. A long curved spine on 1st exopodal segment of P2.

Species Amallothrix lobophora - Plate 3 of morphological figuresissued from : F.D. Ferrari & D.K. Steinberg in Proc. Biol. Soc. Washington, 1993, 106 (3). [p.484, Fig.10]. As Scolecithricella lobophora.
Female from NE Pacif.: Monterey Bay): A, habitus (lateral left side); B, urosome (lateral left side); C, Md (gnathobase, anterior); D, Md (mandibular palp, posterior); E, Mx1; F, Mx1 (medial lobe 1).
bars: 1 = 0.2 mm for A; 2 = 0.2 mm for B; 3 = 0.1 mm for C-F.
Nota: Lateral lobe of Mx1 with 9 setae; exopod 1-segmented with 8 setae; basoendopod with medial sets of 5 and 3, and 6 terminal setae; medial lobes 2 and 3 with 2 and 4 setae, medial lobe 1 with 9 apical and 2 posterior setae, denticles on anterior and posterior surfaces.

Species Amallothrix lobophora - Plate 4 of morphological figuresissued from : F.D. Ferrari & D.K. Steinberg in Proc. Biol. Soc. Washington, 1993, 106 (3). [p.485, Fig.11]. As Scolecithricella lobophora.
Female: A, caudal ramus (ventral); B, A1 (segments 1-10); C, idem (segments11-14); D, idem (segments 15-18); E, idem (segments 19-22);
Bars: 1 = 0.2 mm for A; 2 = 0.1 mm for B-E; letters on proximal segments of B-E.

Species Amallothrix lobophora - Plate 5 of morphological figuresissued from : F.D. Ferrari & D.K. Steinberg in Proc. Biol. Soc. Washington, 1993, 106 (3). [p.486, Fig.12]. As Scolecithricella lobophora.
Female: A, P2 (posterior); B, P3 (posterior); C, P3 (exopodal segment 2, anterior); D, P4 (posterior); E, P4 (endopodal segments 2-3, anterior); F, P5 (posterior).
Bar: 0.1 mm.

Species Amallothrix lobophora - Plate 6 of morphological figuresissued from : H.S.J. Roe in Bull. British Mus. (Natural History) Zool., London, 1975, 28 (7). [p.330, Fig.17]. Doubtful.
Male (from Cape Verde Islands): a, habitus (dorsal); b, rostrum (ventral); c, rostrum (lateral); d, last thoracic segment and urosome (lateral); e, A2; f, Md (mandibular palp); g, Mx1; h, Mx2 (lobes 4 and 5 omitted); i, Mxp; j, P1; ; k, P2; l, P3; m, P4; n, P5; o, left P5 (last exopodite segment).
Bar scale 0.1 mm unless indicated.

Compl. Ref.:
Grice & Hulsemann, 1965 (p.224); Vives, 1982 (p.292)
NZ: 3

Distribution map of Amallothrix lobophora by geographical zones
Species Amallothrix lobophora - Distribution map 2
Chart of 1996
N Atlant (Cape Verde Is., off Mauritania, G. of Mexico), NE Pacif. (California)
N: 4
? (8) M: 1,67-1,44; (88) F: 1,6; (535) F: 1,85-1,26; {F: 1,26-1,85}
Rem.: mesopelagic (509-1000 m).
The male described by Roe (1975) is not sure in this species.
This species could be representative for the isolation due to the closure of the isthmus of Panama.
Last update : 29/12/2014
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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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