Veprichlamys versipellis Dijkstra & Kastoro, 1997
DIJKSTRA, H. H. & W. W. KASTORO. 1997. Mollusca Bivalvia: Pectinoidea (Propeamussidae and Pectinidae) from eastern Indonesia. Pp. 245-285, figs. In: Crosnier, A. & Bouchet, P. (eds), Résultats des Campagnes MUSORSTOM, Volume 16. Mémoires du Muséum National d'Histoire naturelle 172: 1-667 M 16 [p. 270, figs. 114-131]
1997 Veprichlamys versipellis Dijkstra & Kastoro, 1997
H. H. Dijkstra & W. W. Kastoro, 1997, figures 111-117.
H. H. Dijkstra & W. W. Kastoro, 1997, figures 118-127.
H. H. Dijkstra & W. W. Kastoro, 1997, figures 128-137.
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«MATERIAL EXAMINED. — Indonesia. KARUBAR, Kai Islands: stn DW 13, 05º26'S, 132º38'E, 417-425 m, 5 v (MNHN). — Stn CP 33, 06º05'S, 132º38'E,307-311 m, 1 v (MNHN).
Tanimbar Islands: stn DW 44, 07º52'S, 132º48'E, 291-295 m, 5 v (3 MNHN, 2 LlPl). — Stn CP 46, 08º01'S, 132º51'E, 271-273, 1 fresh db (holotype). — Stn DW 61, 09º05'S, 132º44'S, 235-236 m, 14 v (10 MNHN, 4 LIPI). — Stn CP 79, 09º16'S, 131º22'E, 239-250 m, 3 v (1 MNHN, 2 HD). — Stn CP 86, 09º26'S, 131º13'E, 223-225 m, 2 v (MNHN). TYPE MATERIAL. — Holotype MNHN. Paratypes: 22 MNHN, 6 LIPI, 2 HD. TYPE LOCALITY. — Arafura Sea, E of Tanimbar Islands, KARUBAR, stn CP 46, 08º01'S, 132º51'E, 271-273 m. DISTRBUTION. — Banda and Arafura Sea, shells only in 225-417 m. DESCRIPTION. — Shell fragile, up to 35 mm high, sorrewhat obliquely ovate, compressed, equilateral, equivalve, auricles inequivalve, umbonal angle ca. 90º. Prodissoconch heigbt ca. 280 μm. Both valves sculptured with numerous (ca. 40) irregularly spaced, primary radial costae, comrnencing at I mm shell height, and ca. 12, secondary radial riblets commencing at central part of disc, and increasing towards ventral margin. Costae squamose. Microsculpture of interspaces variable: early growth stage with diverging striae near anterior and posterior margin, shagreen microsculture above central part of disc and near ventral margin, in between radial striae and diverging to the anterior and posterior margins. Anterior auricle of left valve larger than posterior, sculptured with 10 weakly developed squamous radial lirae; posterior auricle with 6 fine squamous radial lirae, interspaces of early growth stage striae microscopically reticulated. Auricles of right valve sculptured with more prominent radial costae, fewer in number (anterior 6, posterior 5). Anterior hinge line straight, posterior somewhat suppressed. Byssal fasciole broad, byssal notch rather deep. Inactive and active ctenolium beside ledge of suture, with 4 teeth. Postero-lateral margins of disc scarcely gaping. Resilifer elongate triangular. Inner surface of both valves plicate near periphery. Colour creamy with pink-reddish dots and scales. Dimensions (holotype): H 23.4, L 20.0, D 6.1 mm. REMARKS. — Juvenile specimens resemble V. jousseaumei (Bavay, 1904), from the western Pacific, which differs by the absence of intercalating ribs and of the shagreen microsculpture. Adult specimens of V. versipellis differ by having shagreen microsculpture on the anterior auricles, on the central part ofthe disc and near the ventral margin, whereas V. jousseaumei has radial striae. V. versipellis has many (ca. 50), inegularly spaced, radial riblets, V. jousseaumei fewer (ca.20), regularly spaced, radial ribs. V. perillustris (Iredale, 1925) from southern and southeastern Australia differs having by a more oblique shape, fewer (ca 20) radial ribs, more prominent scales on the ribs, and lack of a shagreen (reticulated) microsculpture. V. kiwaensis (Powell, 1933) resembles V. perillustris and differs from V. versipellis by having fewer (ca. 20) regularly spaced radial ribs and more prominent microscopic striae; shagreen microsculpture is absent. V. incantata (Hertlein, 1972) from the Galapagos Islands differs by attaining a larger size (ca.45 mm high), having a more elongate shape, a larger convexity of the valves and lacking the shagreen microsculpture. ETYMOLOGY. — From the Latin versipellis, adj. = metamorphosis, with regard to the inconstancy of shell microsculpture.» HENK H. DIJKSTRA & WORO W. KASTORO, 1997
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«Two species recently described in Veprichlamys, V. versipellis Dijkstra and Kastoro, 1997 from Indonesia (Banda and Arafuru Seas, 225–417 m) and V. deynzerorum Dijkstra, 2004 (Philippines, 34–40 m in reef rubble), are not considered here to be assignable to Veprichlamys because of their ribbing pattern, presence of shagreen microsculpture, and lack of any significant development of linear striae in rib interspaces. They are instead regarded as belonging to Chlamys in a broad sense.»
WALLER, T. R. 2007. The evolutionary and geographic origins on the endemic Pectinidae (Mollusca: Bivalvia) of the Galapagos Islands. Journal of Paleontology, 81 (5): 929–950 [p. 943]
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Veprichlamys versipellis Dijkstra and Kastoro, 1997; B. K. Raines & G. T. Poppe, 2006, A Conchological Iconography, The Family Pectinidae, plate 197, figure 2.
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