Hincksella sibogae Billard, 1918,

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: 19-20

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.3475301

persistent identifier

http://treatment.plazi.org/id/03C0D256-AD5C-6130-FD83-A3285886FB0C

treatment provided by

Plazi

scientific name

Hincksella sibogae Billard, 1918
status

 

Hincksella sibogae Billard, 1918 

Figs 6BView Fig, 7View Fig K–L; Table 3

Hincksella sibogae – Vervoort & Watson 2003: 245  , fig. 58D–E.

Material examined

PACIFIC OCEAN • two colonies without gonothecae, ca 9 cm high; one of them was cut into two pieces for convenient microscopical examination; off New Caledonia, stn DW4736; 22°42′ S, 167°41′ E; 303–308 m; 22 Aug. 2016; KANACONO leg.; a cladium from the same colony, containing remains of coenosarc, was removed for DNA extraction, DNA1368; voucher MHNG-INVE- 120802; barcode identifier MK 073092View Materials; MNHN-IK-2015-391GoogleMaps  .

Remarks

The present material agrees well with the descriptions given by Billard (1925) and Vervoort & Watson (2003), and it is characterized by the following: a) the unbranched hydrocaulus is fascicled for most of its length; b) its main tube is undivided and has a regular structure, with equivalents of internodes composed of a basal cladial apophysis and its associated axillary hydrotheca, two alternate hydrothecae above, and a second cladial apophysis (on side opposite to preceding one) with its associated axillary hydrotheca; c) hydrocladia are simple and undivided into internodes, up to 1.3 cm long, and bear up to 13 alternate hydrothecae; the first internode is comparatively longer than subsequent ones and provided with a couple of proximal twists; ordinary internodes are moderately-long; d) the hydrothecae are immersed for about half their adaxial length into their corresponding internodes, and they narrow basally; their base is convex, entire, with occasional fenestrae below (as sites for the origin of gonothecae); e) the hydranth is attached to the lower third of the inner hydrothecal wall; f) the perisarc of the colonies is rather thin and easily collapsible, especially on hydrothecae.

Distribution

Indonesia, the Great Barrier Reef, Tasman Sea near Lord Howe Island ( Vervoort & Watson 2003), New Caledonia (present study).

Genus Synthecium Allman, 1872 

MK

National Museum of Kenya

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Syntheciidae

Genus

Hincksella

Loc

Hincksella sibogae Billard, 1918

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

Hincksella sibogae –

Vervoort W. & Watson J. E. 2003: 245
2003