Euvola ziczac (Linnaeus, 1758)
LINNAEUS, C. 1758. Sistema Naturae per Regna tria Naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio Decima, Reformata, [iii], 824 p. Impensis Direct. Laurentii Salvii. Holmiae [Stockholm], 1758. [p. 696, sp. 156]
1758 Ostrea ziczac Linnaeus, 1758
1817 Janira laevigata Schumaher, 1817
1964 Pecten (Euvola) ziczag caboblancoensis Druckerman in Weisbord, 1964
1817 Janira laevigata Schumaher, 1817
1964 Pecten (Euvola) ziczag caboblancoensis Druckerman in Weisbord, 1964
Pecten Ziczac; J. H. Chemnitz, 1784, Neues Systematisches Conchylien-Cabinet, Band 7, plate 61, figures 590-592.
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«Ziczac. 156 O. testa radiis 18 explanatis, M. L. U.
Habitat in O. australiore. Testa valvula plana radiis obsoletis, fed intus versus marginem plicis duplo pluribus conspicuis.» CAROLUS LINNAEUS, 1758
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«Type locality
“Habitat in O. australiore”. The locality mentioned by Linnaeus (1758: 696) is erroneous. This species does not exist in the Indo-Pacific region, but in the tropical and subtropical western Atlantic. Specimens studied (ZMA) from the Caribbean are identical to the type material, so the type locality is designated herein as the Caribbean Sea.
Odhner (1953: 5) isolated one specimen from the MLU collection. Two Thunberg labels and one of Swartz’s are glued to the cotton. This specimen is designated herein as the lectotype (Fig. 8D) (see Wallin, 1993: 88, Ostrea ziczac # 489).
Hanley has isolated one specimen from the ‘‘Linnaean’’ collection. Dance noted, that the mark in pencil ‘‘ziczac Martini vix Linnaei’’ could be Smith’s handwriting. Other material UUZM (not isolated): (1) A box with a specimen glued to cotton with a Thunberg label ‘‘Ziczac’’. On the outside of the left valve near the umbo is a handwritten ink mark ‘‘3’’. This specimen could belong to the MLU collection. (2) A box with a specimen glued to cotton with a Thunberg label ‘‘Ziczac’’. This specimen could also belong to the MLU collection. (3) A box with a specimen and a glued Thunberg label ‘‘Mus. Carol. XIII’’. On the outside of the left valve near the umbo is a handwritten ink mark ‘‘3’’. A box with 2 specimens, a box with one specimen, a box with a left and a right valve, and another box with a left and a right valve. All lack labels or other relevant indications. Remarks Linnaeus (1758: 696) only referred to the MLU and attributed this species to “O. australiore”. The wrong locality and description of 18 radial costae have led to confusions by subsequent authors in the 18th and 19th centuries (Dodge, 1952: 166). Specimens at the UUZM (see above) are clearly referable to O. ziczac, a species known only from the subtropical and tropical western Atlantic.» DIJKSTRA, H. H. 1999. Type specimens of Pectinidae (Mollusca: Bivalvia) described by Linnaeus (1758-1771). Zoological Journal of the Linnean Society, 125: 383-443. [p. 394, 395]
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Ostrea ziczac Linnaeus, 1758; H. H. Dijkstra, 1999, Type specimens of Pectinidae described by Linnaeus, figure 8D.
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«The 'Museum Ulricaae' was expressly referred to (prior to the publication of that work) upon the first appearance of this species in the earlier edition of the ' Systema.' Its type, or original, must consequently be sought for in the Dronningen Museum, and not in the private collection of Linnaeus, who did not possess it at that period.
The shell identified with it by authors (Pecten zigzac, Chemn. Conch. Cab. vol. vii. p. 277, pl. 60, f. 590, 591, 592) is present in the Linnean cabinet, where its eventual presence is indicated in the list accompanying the final edition of the ' Systema.' That shell does not at all correspond to the characters mentioned in the 'Museum,' where from eighteen to twenty, instead of about thirty, ribs are ascribed to the flat valve, &c., &c. What Pecten was really intended in that work I shall not conjecture, although the account is almost adequate enough to tempt one to do so.» HANLEY S. C. T. 1855. Ipsa Linnaei Conchylia. The Shells of Linnaeus, Determined from his Manuscripts and Collection. Williams & Norgate. London [p. 102, 103]
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Pecten Ziczac. J. H. Chemnitz, 1784, Neues Systematisches Conchylien-Cabinet, plate 61, figures 590-592.
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