Amallothrix sp. - Species Card - Marine Planktonic Copepods

Species Card of Copepod

Calanoida ( Order )	details
Clausocalanoidea ( Superfamily )	details
Scolecitrichidae ( Family )	details
Amallothrix ( Genus )	details	List species for this Genus

Amallothrix sp. Roe, 1975 (M)

Abbreviations or symbols

Ref.:

(

List of the studied authors )

Roe, 1975 (p.327, Descr.M, figs.M)

Species Amallothrix sp. - Plate 1 of morphological figures

issued from : H.S.J. Roe in Bull. British Mus. (Natural History) Zool., London, 1975, 28 (7). [p.328, Fig.16].
Male (from Cape Verde Islands): a, habitus (dorsal); b, forehead and rostrum (left lateral side); c, A2; d, mandibular palp; e, Mx1; f, Mx2 (endopod); g, P1; h, P2; i, P3; j, P4; k, P5; l, P5 (last exopodite segment left leg); m, P5 (terminal segments from different specimen).
Bar scale 0.1 mm unless indicated.
Nota: Cephalothorax 2.5 times as long as the 5-segmented abdomen.
Head and 1st thoracic segment fused, 4th and 5th fused.
Rostrum with 2 stout filaments.
A1 19-segmented, reaches to the hind edge of the 2nd abdominal segment.
There is some slight variation in setation of Mx1 where one specimen has 9 setae on the exopodite.
P5 reaches back about half the length of the abdomen; on the left side the exopodite is slightly longer than the endopodite and the last exopodite segment has a lamella and groups of coarse setae.

NZ:

Distribution map of Amallothrix sp. by geographical zones

Loc:

(

Geographical glossary )

NE Atlant. (Cape Verde Is.)

Lg.:

(

References of the authors concerning dimensions )

(8) M: 2,81-2,05; {M: 2,05-2,81}

Rem.:

meso-bathypelagique (depth: 1220-610 m).
According to Roe (1975, p.328-329) this form is similat to the male of Amallothrix propinqua (as Scolecithricella propinqua in Tanaka, 1962, p.63), but differ in the spinulation of the swimming legs and in the structure of P5. This form agrees with Bradford's (1973) redefinition of Amallothrix, but as it may be an undescribed male of a known species, there is not considered to be a new species.

Last update : 29/12/2014


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