Symplectoscyphus paulensis Stechow 1923

• Main Authors: Galea, Horia R., Schuchert, Peter
• Format: Text
• Language: unknown
• Published: Zenodo 2019
• Subjects: Biodiversity; Taxonomy; Animalia; Cnidaria; Hydrozoa; Leptothecata; Sertulariidae; Symplectoscyphus; Symplectoscyphus paulensis; Weddell Sea; Bellingshausen Sea; Pacific; Indian; New Zealand; Weddell; Pena; Yelcho; Antarc*; Antarctica; Macquarie Island
• Online Access: https://dx.doi.org/10.5281/zenodo.3475343; https://zenodo.org/record/3475343

Symplectoscyphus paulensis Stechow, 1923 Figs 16C, 17 K–M; Table 11 Symplectoscyphus paulensis Stechow, 1923: 8. Symplectoscyphus vervoorti El Beshbeeshy, 2011: 184, fig. 61. Symplectoscyphus paulensis – Stechow 1925: 467, fig. 28. — Millard 1967: 183, fig. 4G–H; 1975: 317, fig. 102A–C; 1977: 107; 1978: 199; 1979: 142; 1980: 144, fig. 5A–B. — Vervoort 1972: 180, figs 60B, 61; 1993: 263, figs 63, 65A. — Hirohito 1983: 51, fig. 24. — Vervoort & Watson 2003: 222, fig. 53A–B. — Watson 2003: 170, fig. 20. — Soto Àngel & Peña Cantero 2019: 37, fig. 11I. Sertularella paulensis – Stepanjants 1979: 71, pl. 17 fig. 2. Material examined PACIFIC OCEAN • a colony, 3 × 3.2 cm, without gonothecae; off New Caledonia, stn DW4759; 23°12′ S, 168°03′ E; 317–343 m; 26 Aug. 2016; KANACONO leg.; one fragment was used for DNA extraction, DNA 1390; voucher MHNG-INVE- 120851; barcode identifier MK 073104; MNHN-IK-2015-393 • a fertile colony, 4.5 × 5 cm; same collecting data as for preceding; MNHN-IK-2015-393. Remarks The present material fits the description and illustrations given by Vervoort (1993) of S. paulensis . It is mainly characterized by 1) its rootlike hydrorhiza, firmly adhering the colony to a hard substrate; 2) the stem is unbranched but fascicled, tending to monosiphonic distally; 3) the internodes are weakly indicated, and composed of a minute apophysis (supporting a cladium) together with its associated axillar hydrotheca, as well as two alternate hydrothecae above; 4) the cladia are given off regularly in an alternate manner; unbranched, up to 3 cm long, composed of up to 26 hydrothecate internodes separated by weak oblique nodes; 5) the gonothecae are laterally flattened, with undulated walls; aperture rounded atop of a neck region borne on a terminal, slightly depressed plateau; likely female, containing 1–2 large, ovoid bodies. El Beshbeeshy (2011) created S. vervoorti for material studied earlier by both Vervoort (1972, as S. paulensis ) and Stepanjants (1979, as Sertularella paulensis ), on the account of 1) wider internodes and nodes; 2) hydrothecae circular in cross section and isodiametric throughout; 3) hydrothecal aperture everted, rim provided with pointed cusps. However, in light of the reexamination of the lectotype of S. paulensis by Vervoort (1993: fig. 43A–D) and the comparative measurements given in Table 11, this doesn’t seem justified. Indeed, Vervoort (1993: 263) clearly stated that the “Valdivia material is in perfect agreement with specimens described by Vervoort (1972: 180–183, figs 60b, 61)”. Distribution Off St. Paul (Stechow 1923), off Mozambique (Millard 1967), Vema Seamount (Vervoort 1972), South Africa (Millard 1975), Patagonian Shelf (Stepanjants 1979; El Beshbeeshy 2011, as S. vervoorti sp. nov.), New Caledonia (Vervoort 1993, present study), New Zealand (Vervoort & Watson 2003), Japan (Hirohito 1983), Macquarie Island (Watson 2003) and Antarctica (Peña Cantero 2012; Soto Àngel & Peña Cantero 2019). : Published as part of Galea, Horia R. & Schuchert, Peter, 2019, Some thecate hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program, pp. 1-70 in European Journal of Taxonomy 562 on pages 50-51, DOI: 10.5852/ejt.2019.562, http://zenodo.org/record/3474305 : {"references": ["Stechow E. 1923. Neue Hydroiden der Deutschen Tiefsee-Expedition, nebst Bemerkungen uber einige anderen Formen. Zoologischer Anzeiger 56 (1 - 2): 1 - 20.", "El Beshbeeshy M. 2011. Thecate hydroids from the Patagonian shelf (Coelenterata, Hydrozoa, Thecata). G. Jarms (ed.). Verhandlungen des Naturwissenschaftlichen Vereins in Hamburg 46: 19 - 233.", "Stechow E. 1925. Hydroiden der Deutschen Tiefsee-Expedition. Wissenschaftliche Ergebnisse der Deutschen Tiefsee-Expedition auf dem Dampfer \" Valdivia \" 1898 - 1899 27: 383 - 546.", "Millard N. A. H. 1967. Hydroids from the south-west Indian Ocean. Annals of the South African Museum 50 (9): 169 - 194.", "Vervoort W. 1972. Hydroids from the Theta, Vema and Yelcho cruises of the Lamont-Doherty geological observatory. Zoologische Verhandelingen 120: 1 - 247.", "Hirohito, Emperor of Japan. 1983. Hydroids from Izu Oshima and Niijima. Publications of the Biological Laboratory: 1 - 83. Imperial Household, Tokyo.", "Vervoort W. & Watson J. E. 2003. The marine fauna of New Zealand: Leptothecata (Cnidaria: Hydrozoa) (thecate hydroids). NIWA Biodiversity Memoir 119: 1 - 538.", "Watson J. E. 2003. Deep-water hydroids (Hydrozoa: Leptolida) from Macquarie Island. Memoirs of the Museum of Victoria 60 (2): 151 - 180. https: // doi. org / 10.24199 / j. mmv. 2003.60.18", "Soto Angel J. J. & Pena Cantero A. L. 2019. Benthic hydroids (Cnidaria, Hydrozoa) from the Weddell Sea (Antarctica). Zootaxa 4570 (1): 1 - 78. https: // doi. org / 10.11646 / zootaxa. 4570.1.1", "Stepanjants S. D. 1979. Gidroidy vod antarktiki i subantarktiki. In: Rezul'taty biologicheskikh issledovanii sovetskikh antarkticheskikh ekspeditsii, 6. Issledovaniya Fauny Morei 22 (30): 1 - 99.", "Vervoort W. 1993. Cnidaria, Hydrozoa, Hydroida: Hydroids from the western Pacific (Philippines, Indonesia and New Caledonia) I. Sertulariidae (Part 1). In: Crosnier A. (ed.) Resultats des Campagnes MUSORSTOM, Vol. 11. Memoires du Museum national d'histoire naturelle 158: 89 - 298.", "Millard N. A. H. 1975. Monograph on the Hydroida of southern Africa. Annals of the South African Museum 68: 1 - 513.", "Pena Cantero A. L. 2012. Filling biodiversity gaps: benthic hydroids from the Bellingshausen Sea (Antarctica). Polar Biology 35 (6): 851 - 865. https: // doi. org / 10.1007 / s 00300 - 011 - 1130 - y"]}