Ophiomusa lymani

• Main Authors: O'Hara, Timothy D., Thuy, Ben
• Format: Other/Unknown Material
• Language: unknown
• Published: 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Ophiuroidea; Ophiurida; Ophiomusaidae; Ophiomusa; Ophiomusa lymani; Arctic; Antarctic; Pacific; Indian; New Zealand; Rowe; Paterson; Antarc*
• Online Access: https://zenodo.org/record/6404696; https://doi.org/10.5281/zenodo.6404696

Ophiomusa lymani (W.C. Thomson, 1873) Fig. 5A–G Ophiomusium lymani Thomson, 1873: 174, figs. 32–33.— Lyman 1882: 90.— Mortensen 1933b: 394.— Vadon & Guille 1984: 584.— Paterson 1985: 147–148, fig. 58.— Guille & Vadon 1986: 169.— Alva & Vadon 1989: 843.— Rowe & Gates 1995: 434. Ophiomusa lymani.— Hertz 1927b: 103–105. Ophiomusa lymani.— Olbers et al. 2019: 72–74, fig. 50–51. Material examined. MD 50 CP124, MNHN IE.2009.1617 (2). MD 50 DC137, MNHN IE.2009.1616 (2). Distribution. Arctic (95–2448 m), NW Atlantic (595–3506 m), NE Atlantic (1011–4829 m), NW Pacific (110– 2310 m), NE Pacific (62–2904 m), W Atlantic (101–1965 m), E Atlantic (415–4088 m), W Indian (457–2312 m), E Indo-W Pacific (300–3343 m), E Pacific (730–2599 m), S America (700–3394 m), S Africa (1340–2780 m), S Australia (848–3050 m), New Zealand (495–3029 m). SPA (1340–2000 m). Remarks. Unlike many other widespread bathyal complexes, Ophiomusa lymani has always been identified as a single species that has been reported from all oceans (450–4800 m) except the Arctic and subantarctic/Antarctic. It has been previously reported from across the southern Indian Ocean from South Africa (Olbers et al. 2019), around Madagascar (Guille & Vadon 1986), Reunion (Vadon & Guille 1984), the SPA (Hertz 1927b) and Southern Australia (Rowe & Gates 1995). The specimens from CP124 are large, 23 and 25 mm dd (Fig. 5A–D), and display all the classic characters of O. lymani, including the numerous tiny arm spines (Fig. 5C), more than three ventral disc scales, and granulated radial shields and marginal disc scales. The specimens from stn DC137 are small, 4 mm dd (Fig. 5E–G). They are identified as juvenile O. lymani on the basis of having tumid primary disc plates (see Schoener 1967), granulated disc plates including radial shields which are mostly contiguous, only three arm spines, middle one becoming hooked distally, and oval tentacle scales, associated with VAPs. At this size they are reminiscent of the O. scalare Lyman, 1878b group of species ...