Ophiopholis longispina H.L. Clark, 1911

Granja-Fernández, Rebeca, Hendrickx, Michel E., Rangel-Solís, Pedro Diego & López-Pérez, Andrés, 2023, Deep-sea Ophiuroidea (Echinodermata) collected during the TALUD cruises in western Mexico, Zootaxa 5259 (1), pp. 1-71 : 60

publication ID	https://doi.org/10.11646/zootaxa.5259.1.1
publication LSID	lsid:zoobank.org:pub:4306F52E-FD24-45B0-B307-66B71173D805
DOI	https://doi.org/10.5281/zenodo.7798772
persistent identifier	https://treatment.plazi.org/id/03AB87FA-FF9A-FFEE-FF7B-FCF5FC4DF85D
treatment provided by	Plazi (2023-04-03 13:18:02, last updated 2024-11-28 20:47:02)
scientific name	Ophiopholis longispina H.L. Clark, 1911
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Treatment

Ophiopholis longispina H.L. Clark, 1911 View in CoL View at ENA

Fig. 19A‒F View FIGURE 19

Ophiopholis longispina H.L. Clark, 1911: 116 View in CoL , 119‒121, fig. 45.— Kyte 1969a: 1732, 1738.— Lambert & Austin 2007: 110, 118‒119, figs. 67‒68.

Material examined. 5,232 individuals at nine stations. TALUD VIII, Sta. 11, 2 ind. (ICML-EMU-11051-A) and 17 ind. (ICML-EMU-11051-B). TALUD X, Sta. 4, 1 ind. (ICML-EMU-11045-B) and 9 ind. (ICML-EMU-11045-C); Sta. 5, 4 ind. (ICML-EMU-11045-A). TALUD XIV, Sta. 4, 7 ind. (ICML-EMU-11052-A); Sta. 8, 5 ind. (ICML-EMU-11052-B). TALUD XV, Sta. 5D, 4 ind. (ICML-EMU-11050); Sta. 20, 1 ind. (ICML-EMU-11048-A) and 13 ind. (ICML-EMU-11048-B); Sta. 23, 268 ind. (ICML-EMU-11046), 3 ind. (ICML-EMU-11047-A), 1 ind. (ICML-EMU-11047-B), 1 ind. (ICML-EMU-11047-C), 4 ind. (ICML-EMU-11049-B), 4,841 ind. (ICML-EMU-11222), 6 ind. (ICML-EMU-11687), 1 ind. (ICML-EMU-12999), and 1 ind. (ICML-EMU-11049-A). TALUD XVIB, Sta. 5, 36 ind. (ICML-EMU-11044) and 7 ind. (ICML-EMU-11053).

Comparative material. Holotype: USNM 25653 About USNM . Paratypes, 49 ind.: MCZ OPH-3126 , MCZ OPH-3406 , USNM 26006 About USNM , USNM 26089 About USNM , USNM 26132 About USNM , USNM 26611 About USNM , USNM 27047 About USNM (Supplementary file 2) .

Description (ICML-EMU-11044). DD = 8.7 mm. Disc round. Dorsal disc covered by scales and long spines, more numerous marginally. Primary plates not evident. RS scalene triangular, without spines, separated by scales and spines, except distally ( Fig. 19A View FIGURE 19 ). Ventral interradii covered by scales and some short spines ( Fig. 19B View FIGURE 19 ). OSh broader than long, diamond-shaped with rounded edges. Madreporite larger and rounder than OSh. AdSh curved, separated in front of OSh. Jaws bearing numerous oral papillae; one AdShSp elongated; one 2AdShSp elongated; LOPa 1‒2 elongated; TPas numerous, clustering, short. vT rectangular ( Fig. 19C View FIGURE 19 ). Arms slender. DAP longer than broad, oval, surrounded by small oval plates, contiguous ( Fig. 19D View FIGURE 19 ). VAP longer than broad, pentagonal, separated. LAP with up to 6‒7 ArSp, blunt tip, serrated, elongated (approximately two arm segments in length), dorsalmost the longest, ventralmost the shortest, distalmost arm spines hooked, hyaline. Tentacle pores with one oval TSc ( Fig. 19E View FIGURE 19 ). Color pattern dorsally and ventrally beige-whitish (ethanol preservation) ( Fig. 19A‒F View FIGURE 19 ).

Habitat and distribution. Canada, USA, and northern Mexico; 51‒ 1,746 m depth, on sponges, gorgonians, and muddy substrates (H.L. Clark 1911; Maluf 1988; Lambert & Austin 2007; Granja-Fernández et al. 2015). The material examined was collected off western Baja California and Baja California Sur, and in the Gulf of California; 435‒920 m depth, on gorgonians.

Remarks. Some variations were observed among specimens examined herein: different densities of spines on the dorsal disc, rounded and rosaceous dorsal arm plates, the shape of the jaw, and the first ventral segments of the arms can be grooved in larger specimens. These variations could be related to size, but further analysis is needed to confirm it. The oral papillae are easily removable from the jaw; therefore, many specimens have a jaw with an ophiotrichid appearance. The record from off western Baja California is new.

References

Clark, H. L. (1911) North Pacific Ophiurans in the collection of the United States National Museum. U. S. National Museum Bulletin, 75, 1 - 302. https: // doi. org / 10.5479 / si. 03629236.75.1

Granja-Fernandez, R., Herrero-Perezrul, M. D., Lopez-Perez, R. A., Hernandez-Morales, A. & Rangel-Solis, P. D. (2015) A literature review of the Ophiuroidea (Echinodermata) from the Pacific coast of Mexico. Revista de Biologia Tropical, 63 (2), 37 - 47.

Kyte, M. A. (1969 a) A synopsis and key to the recent Ophiuroidea of Washington State and Southern British Columbia. Journal of the Fisheries Research Board of Canada, 26 (7), 1727 - 1741. https: // doi. org / 10.1139 / f 69 - 160

Lambert, P. & Austin, W. (2007) Brittle stars, sea urchins and feather stars of British Columbia, Southeast Alaska and Puget Sound. Royal BC Museum Handbook, Victoria, 150 pp.

Maluf, L. Y. (1988) Composition and distribution of the central Eastern Pacific Echinoderms. Natural History Museum of Los Angeles County, Technical Report, 2, 1 - 306.

Figures

FIGURE 19. Ophiopholis longispina H.L. Clark, 1911 (ICML-EMU-11044, DD = 8.7 mm). A, Dorsal disc; B, Ventral disc; C, Mouth; D, Dorsal arm; E, Ventral arm; F, Dorsal view. Ophiothrix galapagensis Lütken & Mortensen, 1899 (ICML-EMU- 11691, DD = 7 mm). G, Dorsal disc; H, Ventral disc; I, Mouth; J, Dorsal arm; K, Ventral arm; L, Dorsal view.