Sarsarietellus Campaner, 1984

Ohtsuka, Susumu, Nishida, Shuhei & Machida, Ryuji J., 2005, Systematics and zoogeography of the deep-sea hyperbenthic family Arietellidae (Copepoda: Calanoida) collected from the Sulu Sea, Journal of Natural History 39 (27), pp. 2483-2514 : 2504

Genus Sarsarietellus Campaner, 1984

Diagnosis

Emended part only: cf. Sars 1924 –1925; Heinrich 1993; Ohtsuka et al. 1994. Only female known. Cephalosome with paired papillae anterolaterally. Prosomal end with or without weakly or strongly developed dorsolateral and ventrolateral processes. Genital doublesomite slightly or highly asymmetrical; single copulatory pore located medially or on right side. Antennule 22- or 23-segmented. Exopod of leg 5 unisegmented, with fusion lines visible or not.

Remarks

The genus Sarsarietellus comprises only three species: S. abyssalis (Sars, 1905) , S. natalis Heinrich, 1993 , and S. suluensis n. sp. The new species described herein adds the foregoing features to the generic diagnosis. The anterolateral cephalic papillae are known only in Sarsarietellus . Since they bear a pore on tip, this organ may have a secretory function.

The presence or absence of dorsolateral and ventrolateral processes on the prosomal end in species within a single genus is also recognized within congeners in other arietellid genera such as Arietellus Giesbrecht, 1892 and Paramisophria Scott, 1897 . These processes seem to have evolved convergently many times within the family Arietellidae .