<documentid="990FE11B756115B64F5239362DBA3613"ID-CLB-Dataset="45209"ID-DOI="10.11646/zootaxa.3835.4.2"ID-GBIF-Dataset="01da15e5-14ca-4506-89fd-2055b906f4ff"ID-ISSN="1175-5326"ID-Zenodo-Dep="249622"ID-ZooBank="F492B5ED-0CA7-436B-94AF-EE4C99D630AF"IM.materialsCitations_approvedBy="felipe"IM.metadata_approvedBy="felipe"IM.taxonomicNames_approvedBy="admin"checkinTime="1460457528435"checkinUser="plazi"docAuthor="Simone, Luiz Ricardo L. & Cunha, Carlo M."docDate="2014"docId="EF2F87FC1B70C41EFF58B9C9FB0FED53"docLanguage="en"docName="zt03835p468.pdf"docOrigin="Zootaxa 3835 (4)"docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article"docStyleId="647186512141C8FC8976D5BCC54AEB7D"docStyleName="Zootaxa.2013-.journal_article"docStyleVersion="9"docTitle="Rimula leptarcis Simone & Cunha, 2014, new species"docType="treatment"docVersion="10"lastPageNumber="460"masterDocId="1316FF841B66C409FFCFBF5CFF85E92F"masterDocTitle="Taxonomical study on the mollusks collected in Marion-Dufresne (MD 55) and other expeditions to SE Brazil: the Fissurellidae (Mollusca, Vetigastropoda)"masterLastPageNumber="468"masterPageNumber="437"pageNumber="459"updateTime="1720399785261"updateUser="admin">
<mods:titleid="4AD1BE49C66752DD469896A78D858DB9">Taxonomical study on the mollusks collected in Marion-Dufresne (MD 55) and other expeditions to SE Brazil: the Fissurellidae (Mollusca, Vetigastropoda)</mods:title>
Apex slightly curved, located in posterior 1/4 of shell length. Height 44% of length; width ca. 60% of length. Sculpture reticulated, composed by ca. 40 radial cords and concentric cords, both similar sized, forming delicate reticulation. Foramen approximately 23% of shell length; located between anterior and middle thirds of shell.
Shell size 4.4 mm; tall, bluntly conical; height 44% of length. Pure white. Protoconch of one rounded whorl (Fig. 124); situated on right; smooth, glossy; of 210 µm. Foramen cuneiform (pointed anteriorly), width ca. 10% of length; located between anterior and middle thirds of shell length; ca. 10% of shell width, 23% of shell length; edges irregular (Figs 121, 123, 125). Groove anterior to foramen very narrow, flanked by pair of cords similar to neighboring cords. Profile curved ventro-posteriorly; middle third of dorsal surface somewhat straight, parallel to apertural plane; total angle (excluding planar middle region) ca. 80° (Figs 122, 124); beak in posterior ¼ of shell length (in dorsal view), between dorsal and middle thirds in lateral view. Sculpture of ca. 40 narrow radial cords (Figs 121, 122, 124); cords increasing in strength towards aperture; primary, secondary cords intercalating (Figs 122, 124); concentric cords regularly distributed, as wide as radial cords, except close to margin, with radial cords somewhat stronger; radial, concentric sculptures forming delicate reticulation composed of series of rectangular pits (each rectangle about twice as long as tall, longer axis parallel to shell edges); interspaces between cords twice cords’ width; ca. 60 concentric cords along cords close to median line. Selenizone well-marked, edges as tall as radial cords, twice as tall as foramen edges, projected dorsally, with sharp edges; lunules regular distributed (Fig. 125). Aperture planar (Fig. 122), outline elliptical, width ca. 60% of length; edges slightly undulating due to radial cords. Inner surface smooth, glossy (Fig. 123).
<bibRefCitationid="03174B1B1B71C41EFCF7BCD0FC30EA8B"author="Dall"box="[824,949,908,933]"pageId="23"pageNumber="460"refString="Dall, W. H. (1889) Reports on the results of dredgings, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877 - 78) and in the Caribbean Sea (1879 - 80), by the U. S. Coast Survey Steamer ' Blake'. Bulletin of the Museum of Comparative Zoology, 18, 1 - 492, pls. 10 - 40."type="journal article"year="1889">Dall, 1889</bibRefCitation>
</taxonomicName>
, from the central and northern Caribbean (
<bibRefCitationid="03174B1B1B71C41EFF51BCF3FE10EAE7"author="Farfante"box="[158,405,943,968]"pageId="23"pageNumber="460"refString="Farfante, I. P. (1947) The genera Zeidora, Nesta, Emarginula, Rimula and Puncturella in the Western Atlantic. Johnsonia, 2, 93 - 148."type="journal article"year="1947">Farfante 1947: pl. 49</bibRefCitation>
), by the more oval basal outline, taller shell, stronger sculpture, and the more central and wider foramen. It differs from
<bibRefCitationid="03174B1B1B71C41EFD5EBC88FCA2EAC3"author="Pilsbry"box="[657,807,980,1005]"pageId="23"pageNumber="460"refString="Pilsbry, H. A. (1943) Floridian species of Rimula. The Nautilus, 57, 37 - 40."type="journal article"year="1943">Pilsbry, 1943</bibRefCitation>
</taxonomicName>
, by the more elongated shell, and by more abundant and the delicate radial and concentric sculpture. It differs from
<bibRefCitationid="03174B1B1B71C41EFC6EBCABFBCDED3F"author="Farfante"box="[929,1096,1015,1040]"pageId="23"pageNumber="460"refString="Farfante, I. P. (1947) The genera Zeidora, Nesta, Emarginula, Rimula and Puncturella in the Western Atlantic. Johnsonia, 2, 93 - 148."type="journal article"year="1947">Farfante, 1947</bibRefCitation>
</taxonomicName>
, from Florida, in having much more delicate and denser radial sculpture, by the more demarcated selenizone, and by a more elongated outline. The generic attribution is based on the apex curved downwards, the narrow and elongated foramen, the presence of an anterior foramen furrow, and by the absence of a septum (
<bibRefCitationid="03174B1B1B71C41EFCF0BB38FC57ED53"author="Pilsbry"box="[831,978,1124,1149]"pageId="23"pageNumber="460"refString="Pilsbry, H. A. (1943) Floridian species of Rimula. The Nautilus, 57, 37 - 40."type="journal article"year="1943">Pilsbry 1943</bibRefCitation>
,
<bibRefCitationid="03174B1B1B71C41EFC11BB38FBFBED53"author="Farfante"box="[990,1150,1124,1149]"pageId="23"pageNumber="460"refString="Farfante, I. P. (1947) The genera Zeidora, Nesta, Emarginula, Rimula and Puncturella in the Western Atlantic. Johnsonia, 2, 93 - 148."type="journal article"year="1947">Farfante 1947</bibRefCitation>
