Oswaldella grandis Pena Cantero, Svoboda & Vervoort 1997

• Main Authors: Cantero, A. L. Peña, Molinero, A. González
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Kirchenpaueriidae; Oswaldella; Oswaldella grandis; Antarc*; Antarctic; Bransfield Strait; Ice Shelf; Livingston Island; Ronne Ice Shelf; South Shetland Islands; Weddell Sea
• Online Access: https://doi.org/10.5281/zenodo.5960850; http://treatment.plazi.org/id/B646223DFFC1D327FF241389FC113574

Oswaldella grandis Peña Cantero, Svoboda & Vervoort, 1997 (Figs 1–2) Oswaldella grandis Peña CanTerO, SVObOda & VerVOOrT, 1997: 363–367, figs 7, 14C, D; Peña CanTerO & García CarrascOsa, 1998: 179; 1999: 212 eT seq.; Peña CanTerO & VerVOOrT, 1998: 36; 2004: 833–835, fig. 9; 2009: 86; Peña CanTerO & Marques, 1999: 85; Peña CanTerO & Ramil, 2006: 953, figs 2D, 3A–C; Peña CanTerO, 2008: 457; 2013: 129–130; GOnzález MOlinerO & Peña CanTerO, 2015: 412, 436, figs 7, 16G, 17G, 19G. Oswaldella bifurca —Peña CanTerO, 1991: 175, pl. 32; Peña CanTerO & García CarrascOsa, 1994: 125, fig. 8d–f; 1995: 101–104, fig. 45A–E. ? Oswaldella bifurca —NaumOV & STepanjanTs, 1962: 98; STepanjanTs, 1979: 112, pl. 21 fig. 4; BlancO, 1984: 43, pl. 39 figs 89, 90, pl. 40 figs 91–93, pl. 41 fig. 94. Material examined. German Polarstern Antarctic expedition ANT VIII-5 : Stn 16-475, 13 February 1990, 76.85°S, 49.43°W (off Ronne Ice Shelf, Weddell Sea), 280 m, single colony c. 170 mm high, with female gonothecae (Holotype, RMNH Coel. no. 27466, three slides no. 3248). Spanish Antarctic expedition GEBRAP 96 : Stn 5, 1 January 1997, 62°52’40’’–62°52’58’’S, 59°59’07’’– 59°58’02’’W (Bransfield Strait, off Livingston Island, South Shetland Islands), 922– 699 m, one stem c. 180 mm high, with gonothecae. Description (Holotype). Polysiphonic, unbranched stem 170 mm high. Angle between cauline apophyses and stem ca. 45°. Cauline apophyses with up to six nematophores, three to four axillary ones (Fig. 1B), each emerging through a simple hole in perisarc, although usually provided with a very short collar-shaped nematotheca (Fig. 1B), and up to two other nematophores, each emerging through a ‘mamelon’, sometimes little marked or even absent (Fig. 1B). Hydrocladia much branched (Fig. 1A), with up to third-order hydrocladia. First hydrocladial internode bifurcated (Fig. 1A), with two similar prongs. Mesial-inferior nematophore emerging from slightly marked swelling at proximal third of internode (Fig. 1D–E) and provided ...