Symplectoscyphus aggregatus Jaderholm 1917 ...

• Main Author: ÁLVARO L. PEÑA CANTERO
• Format: Text
• Language: unknown
• Published: Zenodo 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Sertulariidae; Symplectoscyphus; Symplectoscyphus aggregatus; Antarctic; Ross Sea; New Zealand; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.5281/zenodo.3511389; https://zenodo.org/doi/10.5281/zenodo.3511389

Symplectoscyphus aggregatus (Jäderholm, 1917) (Fig. 12 B) Symplectoscyphus aggregatus — Peña Cantero, 2010a: 35 (synonymy). Material examined. Stn 112, strongly polysiphonic stem 12 mm high, three incipient monosiphonic and unbranched stems up to 4 mm high on pebble (NIWA 117571); Stn 198, fragment 6 mm long, in bad condition (MNCN 2.03/632). Description. Stem 12 mm high, strongly polysiphonic, ca. 2 mm in diameter at base. Planar rhizoidal hydrorhiza, indicating attachment on hard substrate. Hydrothecae alternately arranged in one plane, forming two longitudinal rows, strongly packed, branches with planar aspect. Hydrothecal distal part surpassing basal part of following hydrotheca and about half of alternate one. Lower-order branches originating at hydrothecal base, on one side of preceding branch. In some cases branching alternate. Hydrotheca (Fig. 12 B) almost cylindrical, straight, directed upwards, adnate to internode in more than half (usually about two thirds) of adcauline length. Free portion of ... : 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 pages 39-40, DOI: 10.11646/zootaxa.4293.1.1, http://zenodo.org/record/828475 ...