Ovabunda hamsina (Reinicke, 1997)

Halasz, Anna, McFadden, Catherine S., Aharonovich, Dafna, Toonen, Robert & Benayahu, Yehuda, 2014, A revision of the octocoral genus Ovabunda Alderslade, 2001 (Anthozoa, Octocorallia, Xeniidae), ZooKeys 373, pp. 1-41: 22-24

publication ID

http://dx.doi.org/10.3897/zookeys.373.6511

persistent identifier

http://treatment.plazi.org/id/B9ECC5D0-4CFD-19C0-CA7E-802911DC843A

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ZooKeys by Pensoft

scientific name

Ovabunda hamsina (Reinicke, 1997)
status

 

Ovabunda hamsina (Reinicke, 1997)   Fig. 13 View Figure 13

Xenia hamsina   Reinicke, 1997: 49-50; figs 20a-b, plate 30.

Ovabunda hamsina   ; Janes 2008: 610-611.

Material.

Holotype: RMNH Coel. 23904, Sudanese Red Sea, Sanganeb Atoll, off Port Sudan, reef flat (19°21'33.81"N, 37°19'37.66"E), 6 April 1991, coll. G. B. Reinicke; paratypes: RMNH Coel. 23902, same data as above, April 1991; RMNH Coel. 25906, same locality SW corner, 15 m; RMNH Coel. 23553, Sudanese Red Sea, Sanganeb Atoll, lagoon slope near TQ II, 12 m, October 1992, coll. G. B. Reinicke; additional material: RMNH Coel. 23552, same locality, W-slope, TQ IV, 12 m, April 1991, coll. G. B. Reinicke; RMNH Coel. 25903, same locality, SE corner, reef flat; RMNH Coel. 25905 SW corner, 15 m; RMNH Coel. 23907, near southern jetty, 10 m; all April 1991, all coll. G. B. Reinicke; RMNH Coel. 23908, Indian Ocean, Madagascar, 1960, coll. M. Cherbounier, MNHN Oct.A.1993.16; holotype of Xenia grasshoffi   SMF 2616, northern Red Sea, Gulf of Aqaba, Elat, 1 January 1968, coll. Grasshoff M.

Description.

The holotype is 25 mm high and its stalk is 18 mm long, 15 mm wide at its base and 12 mm wide at its uppermost part. Polyp’s body reaches up to 2 mm long; tentacles 5 mm long featuring three rows of 1 mm long and 0.16 mm wide pinnules, 19-21 in the outermost row. An incomplete fourth row is occasionally present. The pinnules are separated by a two-pinnule width space. The sclerites are Ovabunda   -type ( Fig. 13a View Figure 13 ), 0.015-0.025 × 0.016-0.035 mm in diameter (n = 25). Occasionally, two sclerites are partially fused, reaching 0.034 mm in maximal diameter ( Fig. 13b View Figure 13 ). The tentacles of the paratypes (RMNH Coel. 25902, 23533, 25906) bear three rows of pinnules on each side, with 19-22, 19-21 and 17-22 pinnules in the outermost row, respectively, and all feature Ovabunda   -type sclerites. The original description indicated non-pulsating polyps in live colonies. The ethanol-preserved colony is light beige.

Remarks.

The colonies RMNH Coel. 25905, 23907, 23908 feature three rows of pinnules with 17-22 pinnules in the outermost row. The tentacles of RMNH Coel. 23552 have four rows of pinnules and 18-21 pinnules in the outermost row; RMNH Coel. 25903 has three rows of pinnules with an indication of a fourth row, and 19-22 pinnules in the outermost row. All colonies feature Ovabunda   -type sclerites.

Janes (2008) described Ovabunda hamsina   from the Seychelles and the current findings confirm the assignment of Ovabunda hamsina   to the genus Ovabunda   based on sclerite microstructure.

Reinicke (1997) noted under the description of Xenia hamsina   sp. n. (p. 49): " Xenia   aff grasshoffi Reinicke, 1995: 59, Fig. 33". The type of Xenia grasshoffi   was examined by us (see Table 1), and found to have the type of sclerites found in Xenia   and clearly different from Ovabunda hamsina   .

Similar species. Ovabunda hamsina   is most similar to Ovabunda ainex   . Although they both have overlapping number of pinnules in the outermost row, 17-22 and 15-20, respectively, Ovabunda ainex   has three rows of pinnules and Ovabunda hamsina   presents three and sometimes four rows of pinnules. They both have non-pulsating polyps in live colonies.

Distribution. Sudanese Red Sea, Madagascar, Seychelles (see Janes 2008).

Kingdom

Animalia

Phylum

Cnidaria

Class

Anthozoa

Order

Alcyonacea

Family

Xeniidae

Genus

Ovabunda

Loc

Ovabunda hamsina (Reinicke, 1997)

Halasz, Anna, McFadden, Catherine S., Aharonovich, Dafna, Toonen, Robert & Benayahu, Yehuda 2014
2014
Loc

Xenia hamsina

Reinicke 1997
1997