Nausithoe sorbei Jarms, Tiemann & Altuna Prados, 2003

(Fig. 15: C–F)

Nausithoe sorbei Jarms et al., 2003: 3–8, figs 3–5.

Holotype ZMH C11682.

Material examined: Live specimens from laboratory culture (polyps from Gavdos island, Greece, 2005; 115m depth; H. Zibrowius col.).

Diagnosis: young medusa—transparent body with red mouth and stomach; polyp—solitary with one cup-shaped cusp per whorl.

Description: Based on original description, Jarms & Morandini (2019), and own observations on live specimens. The ephyrae are released at 4.7–5.0 mm in diameter, tentacles and transparent body with red mouth and stomach. Polyp solitary; 13.1 mm total length; periderm tube rings more prominent; 1–4 whorls per tube, consisting of a single cup-shaped cusp each.

Type locality: Bay of Biscay (400–1050 m depth).

Distribution: NE Atlantic Ocean (coast of Europe).

Remarks: Besides the original description, only Jarms & Morandini (2019) presented data on the species including observation of live specimens. Despite several attempts to raise the species in captivity, ephyrae did not grow into adults.