Paratanarctus, D'Addabbo Gallo, de Zio Grimaldi, Morone De Lucia & Troccoli, 1992

Pérez-Pech, Wilbert Andrés, Jesús-Navarrate, Alberto De, Demilio, Erica, Anguas-Escalante, Abril & Hansen, Jesper Guldberg, 2020, Marine Tardigrada from the Mexican Caribbean with the description of Styraconyx robertoi sp. nov. (Arthrotardigrada: Styraconyxidae), Zootaxa 4731 (4), pp. 492-508 : 498

Paratanarctus sp.

1 specimen ( PM: 1 female)

Remarks: In comparison to the only described species of the genus, P. kristenseni D’Addabbo Gallo, de Zio Grimaldi, Morone De Lucia & Troccoli, 1992 the collected specimen is of similar body dimensions (body length 124 μm, body width 52 μm vs. body length 125 μm, body width 55 μm in P. kristenseni female holotype). Both taxa have a lance-shaped tarsus and with pretarsus. However, the Mexican specimen is clearly not P. kristenseni as demonstrated by the presence of brown eyes, completely spherical vesicles of the seminal receptacles, the absence of proximal pads, and the leg IV sense organ being in the form of a large enveloped papilla. As Paratanarctus is monotypic, the significance of other characters should be evaluated by comparison to the type material of P. kristenseni . However, the type material of this species is currently unavailable (D’Addabbo Gallo, personal communication).