Oswaldella garciacarrascosai Pena Cantero, Svoboda & Vervoort 1997

• Main Authors: Molinero, A. González, Peña Cantero, A. L.
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Kirchenpaueriidae; Oswaldella; Oswaldella garciacarrascosai; Antarc*; Antarctic; Ross Sea
• Online Access: https://doi.org/10.5281/zenodo.6107455; http://treatment.plazi.org/id/03C287C628037C1ED4F48F2B2F7F7FEF

Oswaldella garciacarrascosai Peña Cantero, Svoboda & Vervoort, 1997 (Figs 6, 16 F, 17F, 19F) Material examined. New Zealand Antarctic Expedition TAN0802: Stn 180 , Tangaroa, 29 February 2008, 69.4318°S, 178.8195°W (off Cape Adare, Ross Sea,), 447–455 m (NIWA 37896). Description. Monosiphonic, unbranched stems, up to 70 mm high, divided into internodes. Angle between cauline apophyses and stem ca. 45°. Cauline apophyses with three nematophores, two axillary ones (Fig. 6 B), each emerging through simple hole in perisarc, and a third nematophore emerging through ‘mamelon’ (Fig. 6 A–B). Hydrocladia unbranched (Fig. 6 A) or bifurcated. Mesial-inferior nematophore emerging from strongly marked swelling at proximal third of internode (Fig. 6 D); without nematotheca (Fig. 6 C–D). Hydrotheca placed on middle of internode (Fig. 6 A, C–D). Hydrotheca elongate. Adcauline wall mostly adnate, but with a distinct free portion (Fig. 6 D). Abcauline wall almost straight, but slightly convex basally and typically with slight concavity just under hydrothecal rim (Fig. 6 C–D). Hydrothecal aperture circular, perpendicular to long axis of internode, rim even (Fig. 6 C–D). Gonothecae fusiform. Male gonotheca with circular, subterminal aperture. Female gonotheca with wide, circular, distal opening (Fig. 6 E). Remarks. Until now only mature male gonothecae and immature female ones were known (cf. Peña Cantero et al . 1997); we have found mature female gonothecae (Fig. 6 E). Published as part of Molinero, A. González & Peña Cantero, A. L., 2015, SEM study of species of Oswaldella Stechow, 1919 (Cnidaria, Hydrozoa, Kirchenpaueriidae), with an annotated checklist of the species of the genus, pp. 401-441 in Zootaxa 4052 (4) on page 409, DOI:10.11646/zootaxa.4052.4.1, http://zenodo.org/record/245887