Sertularella helenae Vervoort, 1993

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 : 36-37

publication ID	https://doi.org/ 10.5852/ejt.2019.562
publication LSID	lsid:zoobank.org:pub:6567F621-7A92-4D1A-8902-A1E76325AF94
DOI	https://doi.org/10.5281/zenodo.3475325
persistent identifier	https://treatment.plazi.org/id/03C0D256-AD6D-6107-FD91-A6B4588EFC1F
treatment provided by	Plazi
scientific name	Sertularella helenae Vervoort, 1993
status

Treatment

Sertularella helenae Vervoort, 1993: 218 , fig. 47B–E.

Sertularella helenae – Galea 2016: 27 View Cited Treatment , fig. 8H.

Material examined

PACIFIC OCEAN • three colonies, 1.8× 2.5 cm, 3.4× 2.5 cm, and 2.8× 2.4 cm, respectively, all without gonothecae; off New Caledonia, stn DW4764; 23°20′ S, 168°15′ E; 350–356 m; 27 Aug. 2016; KANACONO leg.; one colony fragment was used for DNA extraction, DNA 1377; voucher MHNG-INVE- 120838; MNHN-IK-2015-409 GoogleMaps • four colonies, 1.5 × 0.9 cm, 2.1× 1.2 cm, 2.5 × 2.2 cm, and 3.8× 1.7 cm, respectively, without gonothecae; off New Caledonia, stn DW4744; 22°55′ S, 167°37′ E; 310– 290 m; 23 Aug. 2016; KANACONO leg.; MNHN-IK-2015-410 GoogleMaps • a colony, 3× 4 cm, composed of three stems whose branches anastomose so as to form a single flabellate colony, without gonothecae; off New Caledonia, stn DW4720; 22°50′ S, 167°11′ E; 374–400 m; 19 Aug. 2016; KANACONO leg.; MNHN-IK-2015-411 GoogleMaps • three colonies, 1.3× 1.5 cm, 2.1× 1.7 cm, and 2.5 × 2.2 cm, respectively, without gonothecae; off New Caledonia, stn DW4783; 22°56′ S, 167°48′ E; 385–395 m; 29 Aug. 2016; KANACONO leg.; MNHN-IK-2015-412 GoogleMaps • two colonies, 2.5× 2 cm and 1.8× 1.5 cm, respectively, without gonothecae; off New Caledonia, stn DW4725; 22°41′ S, 167°05′ E; 240–256 m; 20 Aug. 2016; KANACONO leg.; MNHN-IK-2015-413 GoogleMaps • a colony, 3× 2.8 cm, without gonothecae; off New Caledonia, stn DW4731; 22°31′ S, 167°35′ E; 460– 457 m; 22 Aug. 2016; KANACONO leg.; MNHN-IK-2015-414 GoogleMaps • nine colonies without gonothecae, largest 3× 3.2 cm; off New Caledonia, stn CP4658; 22°42′ S, 167°13′ E; 303–315 m; 10 Aug. 2016; KANACONO leg.; MNHN-IK-2015-415 GoogleMaps • three colonies without gonothecae, 1.3× 1.5 cm, 1.5× 1.6 cm, and 2.5 × 2.5 cm, respectively; off New Caledonia, stn DW4743; 22°52′ S, 167°34′ E; 380– 340 m; 23 Aug. 2016; KANACONO leg.; MNHN- IK-2015-416 GoogleMaps • numerous colonies and fragments, all without gonothecae, largest 3 × 3 cm; off New Caledonia, stn DW4651; 22°42′ S, 167°14′ E; 295–300 m; 09 Aug. 2016; KANACONO leg.; one colony was used for DNA extraction, DNA 1378; voucher MHNG-INVE- 120839; barcode identification MK 073097 View Materials ; MNHN-IK-2015-417 GoogleMaps • a 2.5× 2.5 cm, colony without gonothecae; off New Caledonia, stn CP4675; 22°50′ S, 167°30′ E; 350–366 m; 13 Aug. 2016; KANACONO leg.; whole colony used for DNA extraction, DNA1379; barcode identification MK 073098 View Materials ; MHNG-INVE- 120840 GoogleMaps • two colonies without gonothecae, 3.5× 4 cm and 4.5× 4 cm, respectively; off New Caledonia, stn DW4744; 22°55′ S, 167°37′ E; 310– 290 m; 23 Aug. 2016; KANACONO leg.; MNHN-IK-2015-440 GoogleMaps • two colonies without gonothecae, both 2.5× 3 cm; off New Caledonia, stn DW4782; 23°00′ S, 167°55′ E; 856– 845 m; 29 Aug. 2016; KANACONO leg.; MNHN-IK-2015-441 GoogleMaps • four colonies without gonothecae, 3.2 × 3 cm, 3.5× 3 cm, 3.5× 3.5 cm, and 4.2× 4.5 cm, respectively; off New Caledonia, stn DW4741; 22°52′ S, 167°41′ E; 210 m; 23 Aug. 2016; KANACONO leg.; MNHN-IK-2015-442 GoogleMaps • a 3.5× 3 cm colony without gonothecae; off New Caledonia, stn DW4745; 22°57′ S, 167°39′ E; 310–403 m; 23 Aug. 2016; KANACONO leg.; MNHN-IK-2015-443 GoogleMaps • two colonies without gonothecae, 4× 4 cm and 4.5× 4.5 cm, respectively; off New Caledonia, stn DW4781; 22°57′ S, 167°47′ E; 295– 255 m; 29 Aug. 2016; KANACONO leg.; MNHN-IK-2015-444 GoogleMaps • twenty colonies without gonothecae, largest 6 × 6 cm; off New Caledonia, stn DW4743; 22°52′ S, 167°34′ E; 380– 340 m; 23 Aug. 2016; KANACONO leg.; MNHN-IK-2015-445 GoogleMaps .

Remarks

Colonies of reticulate appearance, formed through anastomoses of terminal tendrils on neighboring branchlets, are met with in material MNHN-IK-2015-440. Tendrils may also settle down on main stems, forming accessory tubes. Abortive branchlets, given off from below the hydrothecal bases, may never develop hydrothecate internodes, transforming directly into tendrils that reach other hydrothecal bases, uniting laterally neighboring side branches, as illustrated by material MNHN-IK-2015-409. Despite the abundance of the material available both earlier ( Vervoort 1993) and in the present collections, the gonothecae of this species have yet to be discovered.

Distribution

New Caledonia, Norfolk Ridge and Solomon Islands ( Galea 2016).