Calibelemnon indicum (Thompson and Henderson, 1906)

Williams, Gary C., 2018, Illustrated Key and Synopses of Shallow-water Gorgonians and Pennatulaceans of the Central Philippines, Part 2 (Cnidaria: Anthozoa: Octocorallia), Proceedings of the California Academy of Sciences 64 (13), pp. 361-398 : 369

publication ID

https://doi.org/ 10.5281/zenodo.11512474

DOI

https://doi.org/10.5281/zenodo.12791812

persistent identifier

https://treatment.plazi.org/id/766EE179-FFAC-FFCC-CC28-12683625FA67

treatment provided by

Felipe

scientific name

Calibelemnon indicum (Thompson and Henderson, 1906)
status

 

Calibelemnon indicum (Thompson and Henderson, 1906) View in CoL

Figure 26A View FIGURE

MATERIAL EXAMINED.— CASIZG 201545; Philippines, Luzon, Batangas Province, Calumpan Peninsula, Balayan Bay (13.72 N 120.87 E); 40 m depth; 2 May 2014; coll. Peri Paleracio; one whole colony wet-preserved in 95% ethanol.

REMARKS.— Calibelemnon indicum is a very thin and delicate sea pen with two longitudinal columns of polyps, in which the polyps are oppositely arranged along the length of the rachis. The axis is visible through the thin tissues of the rachis and peduncle. Siphonozooids are conspicuous as numerous low mounds in opposite columns along the rachis. Sclerites are absent altogether.

SPECIES.— Four species are described — Calibelemnon hertwigi (Balss, 1909) , Calibelemnon symmetricum Nutting, 1908 , Calibelemnon indicum (Thomson and Henderson, 1906) , and Calibelemnon francei Williams and Alderslade, 2011 . The latter two species are considered valid, while the status of the former two is uncertain.

OCCURRENCE AND DISTRIBUTION.— Calibelemnon is a rarely encountered genus from mesophotic depths and the deep-sea in the Indo-West Pacific (southeastern Africa to Japan and the Philippines, 40-1275 m) and the Western Atlantic (Bahamas Escarpment, 1969 m). In the Philippines, Calibelemnon indicum is known only from a single collection off the Calumpan Peninsula at 40 m depth, inhabiting deeper reefs in areas of unconsolidated sediments.

REFERENCES.— Kükenthal (1915); Ofwegen (2010c); Williams (1990); Williams (1995); Williams (1999); Williams (2011); Williams and Alderslade (2011).

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