Ophiolebes paulensis O'Hara & Thuy 2022, sp. nov.

• Main Authors: O'Hara, Timothy D., Thuy, Ben
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Echinodermata; Ophiuroidea; Ophiacanthida; Ophiacanthidae; Ophiolebes; Ophiolebes paulensis; Île Amsterdam
• Online Access: https://doi.org/10.5281/zenodo.6404720; http://treatment.plazi.org/id/C72D87A15349FF89FEA386F5FD1BF817

Ophiolebes paulensis sp. nov. Fig. 9A–C, 10A–P http://zoobank.org/ urn:lsid:zoobank.org:act: F57E6CCA-DD72-4FED-80BB-439479B0C13D Type material . MD50 CP7, north-east of Île Amsterdam, 37° 47.2´S, 77° 38.98´E, 1680– 940m, Beam trawl, 9/7/1986, MNHN IE.2009.1566 (holotype), MNHN IE.2009.1567 (5 paratypes). Other material examined. MD 50 DC91, MNHN IE.2009.1568 (2). Comparative Material . Ophiolebes comatulina McKnight, 2003: NZOI / E728, 37° 37.5´S, 177° 12.198´E, 688– 432 m, 25/3/1967, holotype, NIWA 3343 (1). EBISCO/DW2603, Plateau des Chesterfield, 19° 36´S, 158° 43.0005´E, 568–570 m, 18/10/2005, MNHN IE. 2013.6311 (1). EBISCO/DW2613, Plateau des Chesterfield, 19° 37´S, 158° 41.9998´E, 519–522 m, 19/10/2005, MNHN IE. 2013.6287 (2). KAH9907/37, Ritchie Hill Seamount, 39° 29.44´S, 178° 25.05´E to 39° 28.51´S, 178° 25.48´E, 1000– 980 m, 3/6/1999, NIWA 41434 (1). Holotype description . Disc is 5.5 mm dd, the longest attached arm piece is ~ 10 mm long; disc is tumid radially and sunken interradially, covered in rounded non-imbricating scales, embedded in thin skin, ~ 0.5 mm dia, minutely perforated, fully contiguous and more polygonal over the radial shields, slightly separated in the centre of the disc (Fig. 9A). Scales support one, rarely 2, disc spines, tapered conical to cylindrical, thorny on blunt tip, 3 times as high as wide, ~ 0.3 mm high in centre, smaller near margin, base smooth, upper half with more sculptured stereom and some small thorns. Radial shields are evidently bar-like but covered by skin and scales. Ventral disc (Fig. 9B) surfaces are covered in similar scales, 4–5 rows from oral shield to margin, marginal scales with short conical stumps, 2 times as long as wide, but extend only half the way to the oral shield. Genital slits extend from oral shield for 2.5 arm segments, stopping short of the margin. Genital plates visible externally, adradial plates with a short base and broadly curved, abradial ones abut it closely, extending for half the length of the slit. Jaws are as long as wide, ...