Sertularella hermanosensis El Beshbeeshy 2011

• Main Authors: Galea, Horia R., Schories, Dirk, Häussermann, Verena, Försterra, Günter
• Format: Text
• Language: unknown
• Published: Zenodo 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Sertulariidae; Sertularella; Sertularella hermanosensis; Antarctic; Argentina; Argentine; Magallanes; Cape Horn; Burdwood Bank; Yelcho; Mitre; Antarc*; Antártica
• Online Access: https://dx.doi.org/10.5281/zenodo.6029734; https://zenodo.org/record/6029734

Sertularella hermanosensis El Beshbeeshy, 2011 Figs 11 B-G, 12A; Table 12 Sertularella hermanosensis El Beshbeeshy, 2011: 133, fig. 42. Sertularella geodiae . – p.p. Vervoort, 1972: 120, fig. 37. [non Sertularella geodiae Totton, 1930] Material examined: ZMH C11885; FRV Walther Herwig , Argentine Shelf, no additional data; four sterile colony fragments 7.0-1.4 cm high, each bearing several hydrothecae, with only the perisarc left. – NHML 1888.11.13.42; between Cabo Virgenes, Argentina, and the Falkland Is., Challenger Stn. 314, ca . 128 m; 3 infertile colony fragments (6, 12 and 18 mm high) among the holotype of Sertularella implexa (Allman, 1888) (for more details, see under this species), and a microslide (Fig. 12A). Description: Colonies composed of erect, monosiphonic, unbranched or sparingly-branched stems arising from stolonal fibers firmly adhering to substrate. Both stems and side branches divided into moderately long (though varied in length), imperceptibly geniculate to collinear internodes, by means of faint, oblique constrictions of the perisarc slanting in alternate directions. A hydrotheca to the distal end of each internode. Side branches generally arising from below the bases of every 3 stem hydrothecae by means of short, lateral apophyses. Hydrothecae biseriate, alternate, coplanar; flask-shaped, adnate for slightly more than half their length to the corresponding internode, slightly tumid adaxially; abaxial wall straight to slightly concave proximally, suddenly becoming convex below aperture; free adaxial wall wavy to distinctly transversely-ridged, ridges occasionally reaching abaxial wall; aperture with 4 short, equal, triangular cusps, separated by shallow embayments; renovations occasional; a 4-flapped operculum. Gonothecae unknown. Dimensions: See Table 12. Remarks: According to El Beshbeeshy (2011), his species has hydrothecae with different forms, and this is also evident from his fig. 42. As not all his material was reinspected for the purpose of the present study, it is assumed that those differences could indicate the presence of a mix of species. Distribution: Chile – Región de Magallanes y de la Antártica Chilena [Magellan Strait (Vervoort, 1972, as S. geodiae )]. Argentina – scattered records from the Patagonian Shelf, between ca . 41° S and Península Mitre (El Beshbeeshy, 2011). Elsewhere – between Cabo Virgenes, Argentina, and the Falkland Is. [present study (material co-occurring with the type of S. implexa ); El Beshbeeshy, 2011]; off the NE coast of Falkland Is. (El Beshbeeshy, 2011); a large perimeter including the Strait of Magellan, the Falkland Is., the Burdwood Bank, Isla de los Estados, and Cape Horn (Vervoort, 1972, as S. geodiae ). : Published as part of Horia R. Galea, Dirk Schories, Verena Häussermann & Günter Försterra, 2017, Taxonomic revision of the genus Sertularella (Cnidaria: Hydrozoa) from southern South America and the subantarctic, with descriptions of five new species, pp. 255-321 in Revue suisse de Zoologie 124 (2) on page 282, DOI: 10.5281/zenodo.893519 : {"references": ["El Beshbeeshy M. 2011. Thecate hydroids from the Patagonian shelf (Coelenterata, Hydrozoa, Thecata). Edited by G. Jarms. Verhandlungen des Naturwissenschaftlichen Vereins in Hamburg 46: 19 - 233.", "Vervoort W. 1972. Hydroids from the Theta, Vema and Yelcho cruises of the Lamont-Doherty geological observatory. Zoologische Verhandelingen, Leiden 120: 1 - 247.", "Totton A. K. 1930. Coelenterata. Part V. Hydroida. Natural History Report of the British Antarctic (\" Terra Nova \") Expedition, 1910. Zoology 5 (5): 131 - 252.", "Allman G. J. 1888. Report on the Hydroida dredged by H. M. S. Challenger during the years 1873 - 76. Part II. - The Tubularinae, Corymorphinae, Campanularinae, Sertularinae and Thalamophora. Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 76, Zoology 23 (70): 1 - 90."]}