Symplectoscyphus ...

• Main Author: ÁLVARO L. PEÑA CANTERO
• Format: Text
• Language: unknown
• Published: Zenodo 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Sertulariidae; Symplectoscyphus; Antarctic; Ross Sea; New Zealand; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.5281/zenodo.4386879; https://zenodo.org/doi/10.5281/zenodo.4386879

Symplectoscyphus sp. 2 (Figs 12 K, 13D) Material examined. Stn 25, a few stems up to 12 mm high (MNCN 2.03/645); Stn 132, four stems up to 10 mm high on Staurotheca densa (NIWA 117590). Description. Monosiphonic stems, up to 12 mm high. Highest stem with five primary branches, all to the left, except last one. Some primary branches with two secondary branches in alternate pattern, consequently up to second-order branches present. Without anastomoses. Hydrothecae alternately arranged in one or two planes, sometimes forming a quite acute, almost perpendicular, angle. Hydrotheca (Figs 12 K, 13D) distinctly directed upwards. Adcauline wall convex, except for adcauline cusp; without inflexion point where adcauline wall becomes free. Abcauline wall basally convex, more or less straight distally. Cusp sharp and separated by deep embayments. Adcauline cusp markedly curved adcaudally. Measurements (in µm). Hydrothecae: length abcauline wall 360–370, length free part of adcauline wall 220–280, length adnate part ... : Published as part of ÁLVARO L. PEÑA CANTERO, 2017, Benthic hydroids (Cnidaria, Hydrozoa) from the Ross Sea (Antarctica) collected by the New Zealand Antarctic expedition BioRoss 2004 with RV Tangaroa, pp. 1-65 in Zootaxa 4293 (1) on page 47, DOI: 10.11646/zootaxa.4293.1.1, http://zenodo.org/record/828475 ...