Sertularella curta Galea & Schories 2014

• 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 curta; Iceland
• Online Access: https://dx.doi.org/10.5281/zenodo.6029724; https://zenodo.org/record/6029724

Sertularella curta Galea & Schories, 2014 Fig. 7M, N Sertularella curta Galea & Schories, 2014 in Galea et al ., 2014: 34, figs 6D-E, 7C. Sertularella geniculata. – Leloup, 1974: 28, fig. 23 [non Sertularella geniculata Hincks, 1874 = Sertularella tenella (Alder, 1857)]. Material examined: MHNG-INVE-86236; Chile, Región de Antofagasta, Taltal, -25.38333° -70.51667°, 12-20 m, coll. D. Schories, lot #24; 24.04.2012; a 1.8 cm high, male colony (holotype). – MHNG- INVE-86237; Chile, Región de Antofagasta, Taltal, -25.38333° -70.51667°, 12-20 m, coll. D. Schories, lot #25; 22.04.2012; a 1.6 cm high, male colony (paratype). Description: Colonies arising from creeping, branching stolon. Stems erect, up to 1.8 cm high, monosiphonic; basal part very short and ahydrothecate, either smooth or with up to 4 annuli; remainder of stem slightly geniculate, divided into short internodes by means of inconspicuous constrictions of the perisarc; a hydrotheca to the distal end of each internode. Side branches, when present (up to 3 per stem), short and arising irregularly from below a stem hydrotheca, either in front or the rear side of the colony; occasionally, the branches arise from within the stem hydrothecae; up to 2nd order branching observed. Hydrothecae biseriate, alternate, fusiform, adnate for about 2/3rd their length to the corresponding internode; free adaxial wall with about 3 transverse ridges prolonged abaxially; abaxial wall slightly concave, aperture expanding below rim, and perpendicular to long axis of the theca; margin with 4 equally-developed, triangular cusps separated by rounded, moderately-deep embayments; a 4-flapped operculum; 3 internal, submarginal cusps (2 latero-adaxial, 1 abaxial), not always noticeable. Gonothecae (only male known) originating from below the hydrothecal bases; ovoid-fusiform, walls with 6-7 transverse ridges, aperture surrounded by 4 perisarc projections. Dimensions: Internodes 340-490 μm long and 170- 210 μm wide at nodes. Hydrothecal free adaxial length 345-380 μm, adnate adaxial length 230-270 μm, abaxial length 485-515 μm, maximum width 250-270 μm, diameter at aperture 210-230 μm. Male gonotheca 1440-1660 μm long and 575-620 μm wide. Remarks: The gonotheca of this species is illustrated by Galea et al . (2014, fig. 7C). Distribution: Chile – Región de Antofagasta [Bahía de Tocopilla (Leloup, 1974, as S. geniculata ), Taltal (Galea et al ., 2014)]. : 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 pages 272-273, DOI: 10.5281/zenodo.893519 : {"references": ["Galea H. R., Schories D., Forsterra G., Haussermann V. 2014. New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile. Zootaxa 3852 (1): 1 - 50.", "Leloup E. 1974. Hydropolypes calyptoblastiques du Chili. Report no. 48 of the Lund University Chile Expedition 1948 - 1949. Sarsia 55: 1 - 61.", "Hincks T. 1874. On deep-water Hydroida from Iceland. Annals and Magazine of Natural History (4) 13 (74): 146 - 153.", "Alder J. 1857. A catalogue of the zoophytes of Northumberland and Durham. Transactions of the Tyneside Naturalists' Field Club 3 (2): 93 - 162."]}