Oswaldella garciacarrascosai Pena Cantero, Svoboda & Vervoort 1997
Oswaldella garciacarrascosai Peña Cantero, Svoboda & Vervoort, 1997 (Figs 6, 16 F, 17 F, 19 F) 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, u...
| Main Authors: | , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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2015
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| Online Access: | https://zenodo.org/record/6107455 https://doi.org/10.5281/zenodo.6107455 |
| Summary: | Oswaldella garciacarrascosai Peña Cantero, Svoboda & Vervoort, 1997 (Figs 6, 16 F, 17 F, 19 F) 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 |
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