Glaciambulata neumayeri Galea, Roder, Walcher, Warmuth, Kohlberg & Fischer

• Main Authors: Horia R. Galea, Cornelia Roder, Christoph Walcher, Marco Warmuth, Eberhard Kohlberg, Philipp F. Fischer
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Trachymedusae; Ptychogastriidae; Glaciambulata; Glaciambulata neumayeri; Antarctic; Neumayer; Atka; Medusa; Antarc*; Antarctica
• Online Access: https://doi.org/10.5281/zenodo.5628726; http://treatment.plazi.org/id/03EB879BFF97FFABFF14027CFC30E24D

Glaciambulata neumayeri Galea, Roder, Walcher, Warmuth, Kohlberg & Fischer, gen. et sp. nov. urn:lsid:zoobank.org:act:9DBB7DC2-6BEB-42DF-BFCB-0A3B0193AB41 Figs 1–3 Diagnosis As for the genus. Etymology The species is named after the German Antarctic Station Neumayer III, the platform for all diving operations, from the vicinity of which the new medusa was discovered. Material examined Holotype ANTARCTICA: ³, umbrella (U) = 6 mm wide, total diameter of medusa (D) from tip to tip of opposite tentacles = 17 mm, Atka Bay, 7–9 m, -70.533, -8.055, 12 Dec. 2015 (MHNG-INVE-93880), the medusa was attached to the last, hence youngest, stratum of the sub-ice platelet layer. Paratypes (station data as for holotype) ANTARCTICA: 1 ³, U = 4 mm, D = 12 mm, 7–9 m, 12 Dec. 2015 (MHNG-INVE-93881); 2 medusae [♀: U = 5 mm, D = 16 mm; ³: U = 4 mm, D = not available (N.A.)], 0 m, 18 Dec. 2015 (MHNG- INVE-93882); 2 medusae (♀: U = 4.5 mm, D = 19 mm; ♀: U = 4 mm, D = N.A.), 12 m, 18 Dec. 2015 (MHNG-INVE-93883); 2 medusae (♀: U = 5 mm, D = 15 mm; ³: U = 4 mm, D = N.A.), 23 m, 18 Dec. 2015 (MHNG-INVE-93884); two medusae (³: U = 4 mm, D = 12 mm; ³: U = 3 mm, D = 10 mm), 5 m, 24 Dec. 2015 (MHNG-INVE-93886); 1 ³ medusa (U = 4 mm, D = 12 mm), 25 m, 24 Dec. 2015 (MHNG-INVE-93885); 1 ♀ medusa (U = 5 mm, D = 16 mm), 25 m, 27 Dec. 2015 (MHNG- INVE-93887). Description Medusa up to 19 mm wide from tip to tip of opposite tentacles (Fig. 1 C). Umbrella up to 6 mm in diameter, watch glass-shaped, evenly rounded, without marginal lobes (Fig. 1 D–E). Mesoglea thin, thickening abruptly towards the margin, so as to accommodate a conspicuous belt of chordal cells, on which the tentacles are inserted; belt elongated-ovoid in cross section (Fig. 3 G). Exumbrellar surface smooth, devoid of ribs and grooves; epidermis with scattered nematocysts. Manubrium eight-lobed in proximal half, quadrangular in distal half, projecting beyond aperture of subumbrella; gastric cavity with smooth (Fig. 1 G) ...