Spondylus orstomi Lamprell & Healy, 2001
LAMPRELL, K. L. & J. M. HEALY. 2001. Spondylidae (Bivalvia) from New Caledonia and adjacent waters. Mémoires du Muséum National d’Histoire Naturelle, 185: 111-163 (In: P. Bouchet & B. A. Marshall Eds., Tropical Deep-Sea Benthos 22). [p. 120, figs. 3D-3G, 15 B, 15C]
2001 Spondylus orstomi Lamprell & Healy, 2001
K. L. Lamprell & J. M. Healy, 2001, figures 3, 15.
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«TYPE MATERIAL. — Holotype and 9 paratypes MNHN.
TYPE LOCALITY. — South of New Caledonia, 22°38' S, 167°07' E, 140-160 m [MUSORSTOM 4, sta. DW205].
MATERIAL EXAMINED. — Coral Sea. CHALCAL 1: sta. DC02, 21°14' S, 162°16' E, 80-120 m, 2 Iv. — Sta. DC03, 21°14' S, 162°16' E, 120-150 m, 1 Iv. — Sta. DC46, 20°52' S, 158°34' E, 65 m, 4 Iv. — Sta. DC49, 20°58' S, 158°35' E, 48 m, 1 Iv.
CORAIL 2: sta. DWI8, 20°44' S, 161 °00' E, 69 m, 1 Iv. — Sta. DW32, 19°25' S, 158°49' E, 55 m, 1 Iv. — Sta. DW34, 19°22' S, 158°56' E, 47 m, 3 Iv. — Sta. DW50, 19°18' S, 158°34' E, 50 m, 2 Iv. — Sta. DW56, 19°18' S, 158°47' E, 66 m, 1 Iv. — Sta. DW63, 19°15' S, 158°48' E, 71 m, 1 pv, 1 Iv. — Sta. DW65, 19°15' S, 158°41' E, 62 m, 2 Iv. — Sta. DW93, 19°06' S, 158°53' E, 58-60 m, 3 Iv. — Sta. DW99, 19°06' S, 158°31' E, 52 m, 1 Iv. — Sta. DWI07, 19°09' S, 158°44' E, 62 m, 1 Iv. — Sta. DWI08, 19°09' S, 158°49' E, 68 m, 1 Iv. — Sta. DWI09, 19°09' S, 158°53' E, 47-64 m, 1 rv, 1 lv. — Sta. CPlll, 19°18' S, 158°49' E, 65-70 m, 1 Iv. — Sta. DW116, 19°23' S, 158°35' E, 52 m, 6 lv. MUSORSTOM 5: sta. DW282, Kelso Bank, 24°11' S, 159°32' E, 226-230 m, 5 Iv. New Caledonia. MUSORSTOM 4: sta. DW149, 19°08' S, 163°23' E, 165 m, 1 pv. — Sta. DW187, 19°08' S, 163°29' E, 65-120 m, 3 lv, 1 pv (paratypes). — Sta. DW204, 22°37' S, 167°06' E, 120 m, 1 Iv. — Sta. DW205, 22°38' S, 167°07' E, 140-160 m, 1 pv (holotype, Figs 3 D-E, G, Fig. 15 C), 3 Iv (paratypes). — Sta. DW207, 22°39' S, 167°07' E, 220-235 m, 1 pv. LAGON: sta. 267, Secteur de Nouméa, 22°22' S, 166°15' E, 70 m, 1 Iv. — Sta. 349, Grand Récif Sud, 22°40' S, 166°55' E, 55 m, 1 Iv. — Sta. 370, 22°38' S, 167°06' E, 127 m, 3 Iv. — Sta. 371, 22°39' S, 167°04' E, 165 m, 1 Iv. — Sta. 387, 22°39' S, 167°07' E, 225 m, 1 Iv. — Sta. 417, 22°40' S, 167°19' E, 130 m, 1 Iv. — Sta. 429, 22°40' S, 167°15' E, 95 m, 2 Iv. — Sta. 830, Secteur de Poindimié, 20°49' S, 165°19' E, 105-110 m, 60 Iv. — Sta. 835, 20°47' S, 165°17' E, 135-150 m, 1 Iv. — Sta. 983, Secteur de Poum, 20°23' S, 163°57' E, 38-68 m, 1 Iv. — Sta. 1145, Secteur des Belep, 19°21' S, 163°45' E, 38 m, 1 Iv. — Sta. 1146, 19°08' S, 163°31' E, 185 m, 1 lv. EXPEDITION MONTROUZIER: sta. 1321, Passe Deverd, 20°44.7' S, 164°14.9' E, 90-115 m, 9 lv, 3 rv, 2 pv. — Sta. 1323, Chenal de la Passe de Koumac, 20°40.9' S, 164°14.8' E, 82-120 m, 30 lv, 5 rv. — Sta. 1331, Grand Recif de Koumac, 20°40'-20°40.6' S, 164°11.2-164°12.1' E, 55-57 m, 4 Iv. SMIB 6: sta. DW106, 19°08' S, 163°31' E, 165-195 m, 1 Iv. BATHUS 4: sta. DW932, 19°08' S, 163°29' E, 170-190 m, 4 pv. Norfolk Ridge. CHALCAL 2: sta DW80, 23°27' S, 168°02' E, 80-160 m, 1pv. Vauban 1978-79: sta. 33, 22°33' S, 166°25' E, 290-350 m, 6 lv. SMIB 5: sta. DW95, 23°00' S, 168°20' E, 200 m, 1 pv (paratype, Fig. 15 B). BATHUS 2: sta. DW715, 22°39' S, 167°11' E, 202-227 m, 1 pv (paratype). BATHUS 3: sta. DW828, 23°23' S, 168°02' E, 318-360 m, 3 lv. Vanuatu. MUSORSTOM 8: sta. DW1021, 17°43' S, 168°37' E, 124-130 m, 4 Iv. — Sta. DW1022, 17°46' S, 168°38' E, 247 -280 m, 1 Iv. DISTRIBUTION. — Known only from the Chesterfield-Bellona plateau, New Caledonia and Vanuatu. Alive in 71-220 m, single valves in 38-318 m.
DESCRIPTION. — Shell to 48.5 mm in height (paratype from SMIB 5 sta. DW95), elongate ovate, moderately thin, inequivalve, auricles comparatively small. Lv slightly convex; sculpture of 12-16 well defined, low, rounded, principal radial ribs with 1-3 minor radial ribs in the interstices; ornamention of the ribs and interstices of densely imbricated spines with some occasional longer, thin, upright spines marginally; internal excavation under hinge plate shallow; margin evenly crenulate; external ribs obscurely visible internally. Rv sculpture of foliations near attachment area, remaining surface with a few, densely imbricated, larger spines; attachment area small~ internal excavation under hinge plate moderately shallow, external ribs obscurely visible internally; margin evenly crenulated. Colour orange with some white umbonally, ribs white; internally glossy white with some external colour visible, margin orange.
Measurements of holotype: Height 35.8 mm, width 30.7 mm, depth ofpv 16.8 mm. REMARKS. — Spondylus orstomi can be compared with S. multimuricatus Reeve, 1856, S. croceus Schreibers, 1793, S.foliaceus and S. candidus, all of which, like S. orstomi, are orange in colour. For comparisons between S. orstomi and these species, see Table 5.
ETYMOLOGY. — Named for ORSTOM (Institut Français de Recherche Scientifique pour Ie Développement en Coopération) [now IRD, Institut de Recherche pour Ie Devéloppement].»
KEVIN LESLIE LAMPRELL & JOHN M. HEALY, 2001
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«Diagnosis. Shell small to medium, elongate ovate, moderately thin, and inequivalve; auricles relatively small. Sculpture consisting of 12-16 well defined, low, rounded, primary radial ribs with 1-3 secondary riblets in the interstices. Both ribs and interstices covered in densely imbricated spines, with some spines occasionally being longer, thin and upright. Color variable from uniformly light brown, orange and bright yellow to maculations of orange and white.
Remarks. Since the first report of this species at EI by Raines (2002), more valves have been collected, so we can now confirm that the species is indeed S. orstomi. Habitat. Occasionally found at several locations around EI, in sand and rubble, from 30–50 m. Distribution. Although Spondylus orstomi was originally described from New Caledonia, this deep water species has a much wider distribution. It is known from the Coral Sea, Philippines, and off China. The maximum size currently known is 60.6 mm from its furthest range in the East China Sea (coll. MHU). It has not been recorded from the Hawaiian Islands, New Zealand or the Kermadec Islands.» RAINES, B. K. & M. HUBER. 2012. Biodiversity Quadrupled—Revision of Easter Island and Salas y Gómez Bivalves. Zootaxa, 3217: 1-106, figs. 1-49. [p. 39]
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Spondylus orstomi Lamprell & Healy, 2001; B. K. Raines & M. Huber, 2012, Biodiversity Quadrupled—Revision of Easter Island and Salas y Gómez Bivalves, figures 18C-18F.
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