Symplectoscyphus paulensis Stechow, 1923,

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, European Journal of Taxonomy 562, pp. 1-70: 50-51

publication ID

https://doi.org/10.5852/ejt.2019.562

publication LSID

lsid:zoobank.org:pub:6567F621-7A92-4D1A-8902-A1E76325AF94

DOI

http://doi.org/10.5281/zenodo.3475343

persistent identifier

http://treatment.plazi.org/id/03C0D256-AD7F-6111-FDC0-A66F5947FA6E

treatment provided by

Plazi

scientific name

Symplectoscyphus paulensis Stechow, 1923
status

 

Symplectoscyphus paulensis Stechow, 1923 

Figs 16CView Fig, 17View Fig 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 View Cited Treatment , 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 073104View Materials; MNHN-IK-2015-393GoogleMaps  a fertile colony, 4.5 × 5 cm; same collecting data as for preceding; MNHN-IK-2015-393GoogleMaps  .

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).

MK

National Museum of Kenya

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Sertulariidae

Genus

Symplectoscyphus

Loc

Symplectoscyphus paulensis Stechow, 1923

Galea, Horia R. & Schuchert, Peter 2019
2019
Loc

Symplectoscyphus vervoorti

El Beshbeeshy M. 2011: 184
2011
Loc

Sertularella paulensis – Stepanjants 1979: 71

Stepanjants S. D. 1979: 71
1979
Loc

Symplectoscyphus paulensis –

Soto Angel J. J. & Pena Cantero A. L. 2019: 37
Vervoort W. & Watson J. E. 2003: 222
Watson J. E. 2003: 170
Hirohito & Emperor of Japan 1983: 51
Vervoort W. 1972: 180
Millard N. A. H. 1967: 183
Stechow E. 1925: 467
1925
Loc

Symplectoscyphus paulensis

Stechow E. 1923: 8
1923