Amphipholis pugetana ( Lyman, 1860 )

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 : 52

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.7798764
persistent identifier	https://treatment.plazi.org/id/03AB87FA-FF92-FFE6-FF7B-FD15FD58F8DD
treatment provided by	Plazi (2023-04-03 13:18:02, last updated 2024-11-28 20:47:02)
scientific name	Amphipholis pugetana ( Lyman, 1860 )
status

Treatment

Amphipholis pugetana ( Lyman, 1860) View in CoL View at ENA

Fig. 16G‒L View FIGURE 16

Amphiura pugetana Lyman, 1860: 193‒194 View in CoL .

Amphipholis pugetana View in CoL . H.L. Clark 1911: 166‒167.— Nielsen 1932: 281, 288‒290.— Fell 1962: 13, 24.— Lambert & Austin 2007: 102‒104, figs. 55‒56.— Boolotian & Leighton 1966: 5, 9, fig. 9.— Hendler 1996: 140‒142, fig. 7.9.

Axiognatus pugetana . Kyte 1969a: 1728, 1735, 1737.

See Hendler (1996) for other synonymous records.

Material examined. 132 individuals at five stations. TALUD X, Sta. 4, 1 ind. (ICML-EMU-11162-A) and 16 ind. (ICML-EMU-11162-B). TALUD XIV, Sta. 15, 57 ind. (ICML-EMU-11163), 5 ind. (ICML-EMU-11164), and 28 ind. (ICML-EMU-11164-A); Sta. 20, 5 ind. (ICML-EMU-11164-B). TALUD XV, Sta. 20, 1 ind. (ICML-EMU-11165) and 2 ind. (ICML-EMU-12994); Sta. 23, 17 ind. (ICML-EMU-11166).

Comparative material. None available. According to Lyman (1860), the type series of A. pugetana was deposited at the USNM, but this material has not been located in this collection or in any other collection (i.e., LACM, MCZ, NHMD; pers. comm. Tom Schiøtte & Penny Benson, 2016) and is probably lost .

Description (ICML-EMU-11163). DD = 4 mm. Disc pentagonal. Dorsal disc covered by imbricated scales. Primary plates not evident. RS elongated half-circular, contiguous but with 1‒2 scales inserted proximally ( Fig. 16G View FIGURE 16 ). Ventral interradii covered by scales smaller than dorsal disc ( Fig. 16H View FIGURE 16 ). OSh as broad as long, spearhead-shaped. Madreporite slightly larger than OSh. AdSh triangular, meeting in front of OSh. Jaws bearing three oral papillae at each side; AdShSp twice as wide as high, rounded rectangular, the largest; 2AdShSp rounded; IPa quadrangular. vT quadrangular ( Fig. 16I View FIGURE 16 ). Arms slender. DAP fan-shaped, as long as wide, separated ( Fig. 16J View FIGURE 16 ). VAP longer than broad, pentagonal, slightly separated from each other. LAP with up to three ArSp, elongated (approximately two arm segments in length), pointed, middle one often much longer and swollen at the tip. Tentacle pores with two TSc, abradial larger ( Fig. 16K View FIGURE 16 ). Color pattern dorsally and ventrally beige-whitish (ethanol preservation) ( Fig. 16G‒L View FIGURE 16 ).

Habitat and distribution. Alaska, British Columbia, Canada, Washington, and California, USA, and Mexico; 15‒ 871 m depth, possibly to 1,620 m (H.L. Clark 1911; Hendler 1996; Lambert & Austin 2007; Granja-Fernández et al. 2015, 2021; See Remarks), buried in sand and mud ( Maluf 1988). The material examined was collected off western Baja California Sur and in the northern Gulf of California; 410‒871 m depth. Some specimens were attached to a log.

Remarks. We could not compare our material with the type material (presumably lost), but its morphology is consistent with previous species descriptions (e.g., Lyman 1860; Hendler 1996). Previously recorded from shallow water and as deep as 604 m, and possibly to 1,620 m ( Hendler 1996). Our finding of the species at 871 m depth corresponds to the deepest confirmed record to date.

References

Boolotian, R. A. & Leighton, D. (1966) A key to the species of Ophiuroidea (brittle stars) of the Santa Monica Bay and adjacent areas. Los Angeles County Museum Contributions in Science, 93, 1 - 20. https: // doi. org / 10.5962 / p. 241083

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

Fell, B. H. (1962) A revision of the major genera of Amphiuroid Ophiuroidea. Transactions of the Royal Society of New Zealand, Zoology, 2 (2), 1 - 26.

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.

Granja-Fernandez, R., Maya-Alvarado, B., Cupul-Magana, A. L., Rodriguez-Troncoso, A. P., Solis-Marin, F. A. & Sotelo-Casas, R. S. (2021) Echinoderms (Echinodermata) from the Central Mexican Pacific. Revista de Biologia Tropical, 69 (S 1), 219 - 253. https: // doi. org / 10.15517 / rbt. v 69 iSuppl. 1.46356

Hendler, G. (1996) Taxonomic atlas of the benthic fauna of the Santa Maria Basin and Western Santa Barbara Channel. Class Ophiuroidea. Santa Barbara Museum of Natural History, 14, 113 - 179.

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.

Lyman, T. (1860) Descriptions of New Ophiuridae, belonging to the Smithsonian Institution and to the Museum of Comparative Zoology at Cambridge. Proceedings of the Boston Society of Natural History, 7, 193 - 204 + 252 - 262. https: // doi. org / 10.5962 / bhl. part. 4822

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.

Nielsen, E. (1932) Ophiurans from the Gulf of Panama, California and the Strait of Georgia. Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening, 91, 241 - 346.

Figures

FIGURE 16. Amphichondrius granulatus (Lütken & Mortensen, 1899) (ICML-EMU-12993, DD = 5 mm). A, Dorsal disc; B, Ventral disc; C, Mouth; D, Dorsal arm; E, Ventral arm; F, Dorsal view. Amphipholis pugetana (Lyman, 1860) (ICML-EMU- 11163, DD = 4 mm). G, Dorsal disc; H, Ventral disc; I, Mouth; J, Dorsal arm; K, Ventral arm; L, Dorsal view.