220 lines
30 KiB
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220 lines
30 KiB
XML
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<mods:title id="E613589679859328F99B8DDFEF4DFF09">Revision of the genus-group Hystricella R. T. Lowe, 1855 from Porto Santo (Madeira Archipelago), with descriptions of new recent and fossil taxa (Gastropoda, Helicoidea, Geomitridae)</mods:title>
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<mods:namePart id="61F15B169804A2A4C14A4768A0FFE808">Mattia, Willy De</mods:namePart>
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<mods:namePart id="07586B829FAF9908A6BDA946919ACB95">Neiber, Marco T.</mods:namePart>
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<mods:namePart id="DD6BBC63988427D7939BD317961D62B9">Groh, Klaus</mods:namePart>
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<treatment id="C588E73FB3F994B9C5C0919849F4351F" ID-GBIF-Taxon="140417746" LSID="urn:lsid:plazi:treatment:C588E73FB3F994B9C5C0919849F4351F" httpUri="http://treatment.plazi.org/id/C588E73FB3F994B9C5C0919849F4351F" lastPageId="64" lastPageNumber="65" pageId="62" pageNumber="63">
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<subSubSection id="7DB9660E002EC776C103F9335CAF634C" pageId="62" pageNumber="63" type="nomenclature">
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<paragraph id="31FFAA21360D8EF95F5820317B6AA5A7" pageId="62" pageNumber="63">
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<taxonomicName id="71C3DB86A6A0BCF9B9BA901EC41B2B7C" ID-CoL="7NZS5" authority="R. T. Lowe, 1855" authorityName="R. T. Lowe" authorityYear="1855" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="genus">
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<pageBreakToken id="1D27187C95773B5B6D29CB512551DC4F" pageId="62" pageNumber="63" start="start">Callina</pageBreakToken>
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R. T. Lowe, 1855
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</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection id="B19AB7CC934377450A5CC30660B5BAC3" pageId="62" pageNumber="63" type="reference_group">
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<paragraph id="F2B45D57E31475A756EE066CD29A4D46" pageId="62" pageNumber="63">
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<taxonomicName id="78892B64BF3039BD1C6CB3E7E04CD5F2" class="Gastropoda" family="Geomitridae" genus="Helix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Helix (Callina)" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="subGenus" subGenus="Callina">Helix (Callina)</taxonomicName>
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,
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<bibRefCitation id="BF1B72A320D05898311C3239176DF3BB" author="Wollaston, TV" journalOrPublisher="Reeve, London" pageId="77" pageNumber="78" title="Testacea Atlantica or the land and freshwater shells of the Azores, Madeiras, Salvages, Canaries, Cape Verdes, and Saint Helena." year="1878">Wollaston (1878)</bibRefCitation>
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.
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</paragraph>
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<paragraph id="CF786C05AEBD176DA8D749650DE9EA28" pageId="62" pageNumber="63">
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<taxonomicName id="80FECBC9234A9B65E696EAC471AD6BB3" class="Gastropoda" family="Geomitridae" genus="Helix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Helix (Tectula)" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="subGenus" subGenus="Tectula">Helix (Tectula)</taxonomicName>
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, sensu
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<bibRefCitation id="EB87FB5C3DCE3567C4567A1B1B22DDBC" author="Albers, JC" journalOrPublisher="Reimer, Berolini" pageId="74" pageNumber="75" title="Malacographia Maderensis sive enumeratio molluscorum quae in insulis Maderae et Portus Sancti aut viva exstant aut fossilia reperiuntur. Cum XVII tab. color. lapide incis." year="1854">Albers (1854)</bibRefCitation>
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and
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<bibRefCitation id="E0219BFE5906A1D8202591329D9FF94A" pageId="62" pageNumber="63">Paiva (1867)</bibRefCitation>
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, partim.
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</paragraph>
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<paragraph id="22B7A9B29B4524847EBC12B8D3CB79F6" pageId="62" pageNumber="63">
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<taxonomicName id="28EB41899E4C3B58DBA38124BBF9153B" class="Gastropoda" family="Geomitridae" genus="Geomitra" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Geomitra" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="genus">Geomitra</taxonomicName>
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(
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<taxonomicName id="189DAB4B71829B57F0F0DF2EA7AC354B" class="Gastropoda" family="Geomitridae" genus="Actinella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Actinella (Callina)" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="subGenus" subGenus="Callina">Actinella (Callina)</taxonomicName>
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),
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<bibRefCitation id="EEAD3C44463D7AA43B2B9D6B736743DC" pageId="62" pageNumber="63">Pilsbry (1893-1895)</bibRefCitation>
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, partim.
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</paragraph>
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<paragraph id="1E984D03555D675CC7020AFDEBE9F837" pageId="62" pageNumber="63">
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<taxonomicName id="29E14A3184483E559DD94A195A0EB79F" class="Gastropoda" family="Geomitridae" genus="Discula" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discula (Callina)" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="subGenus" subGenus="Callina">Discula (Callina)</taxonomicName>
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,
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<bibRefCitation id="C2C1A54681162FA1FCD3B1D580B23577" author="Mandahl-Barth, G" journalOrPublisher="Abhandlungen der senckenbergischen naturforschenden Gesellschaft" pageId="75" pageNumber="76" pagination="1 - 93" title="Systematische Untersuchungen ueber die Heliciden-Fauna von Madeira." volume="469" year="1950">Mandahl-Barth (1950)</bibRefCitation>
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,
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<bibRefCitation id="221177C2FE139D6ACD4A69CAB75F7C81" author="Seddon, MB" journalOrPublisher="Biotir Reports" pageId="76" pageNumber="77" pagination="1 - 196" title="The landsnails of Madeira. An illustrated compendium of the landsnails and slugs of the Madeiran archipelago." volume="2" year="2008">Seddon (2008)</bibRefCitation>
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and
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<bibRefCitation id="E91FE69F0F3B4B8297DE94A6EA8F5249" pageId="62" pageNumber="63">Bank et al. (2002)</bibRefCitation>
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.
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</paragraph>
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<paragraph id="A18B38210F86B49BE96795AA02A4A6FE" pageId="62" pageNumber="63">
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<taxonomicName id="7D8F863D4444D960CC901D1F1DE7549A" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="genus">Callina</taxonomicName>
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,
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<bibRefCitation id="F13016631004C043E78CE1313B6386A8" author="Walden, HW" journalOrPublisher="Annales Zoologici Fennici" pageId="77" pageNumber="78" pagination="255 - 275" title="Systematic and biogeographical studies on the terrestrial gastropoda of Madeira. With an annotated Check-list." volume="20" year="1983">
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<normalizedToken id="0B59009A6F4F5F0C77B763B1A8B25B2F" originalValue="Waldén">Walden</normalizedToken>
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(1983)
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</bibRefCitation>
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and
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<bibRefCitation id="7766D1E66B8904EEE47458DF08FD6239" pageId="62" pageNumber="63">Schileyko (2005)</bibRefCitation>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="7A858D5D40E2B6928357C7BA442ECA98" pageId="62" pageNumber="63" type="type species">
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<paragraph id="A544E3805E4B05A1CB34F2586F12B7D8" pageId="62" pageNumber="63">Type species.</paragraph>
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<paragraph id="A7509BEB195E551EBB71022B24AB44C7" pageId="62" pageNumber="63">
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<taxonomicName id="9343C4A72585A164859AA8DE7DBAA33C" class="Gastropoda" family="Helicidae" genus="Helix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Helix" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="genus">Helix</taxonomicName>
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[
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<taxonomicName id="826CB03D4808EFC9FD64E051623B10CA" class="Gastropoda" family="Geomitridae" genus="Helicella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Helicella" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="genus">Helicella</taxonomicName>
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]
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<taxonomicName id="FF87EE7FDC48E34640EFAE30D1CB5DB4" class="Gastropoda" family="Helicinidae" genus="Helicoidea" higherTaxonomySource="GBIF" kingdom="Animalia" lsidName="Helicoidea rotula" order="Cycloneritida" pageId="62" pageNumber="63" phylum="Mollusca" rank="species" species="rotula">rotula</taxonomicName>
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R. T. Lowe, 1831 by monotypy.
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</paragraph>
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</subSubSection>
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<subSubSection id="BE7650F07F5B59BFAFCE28C325C22FC5" lastPageId="63" lastPageNumber="64" pageId="62" pageNumber="63" type="description">
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<paragraph id="0984F9AE6EB1B4C191686382310D3475" pageId="62" pageNumber="63">Description of the genus.</paragraph>
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<paragraph id="2A8EEB4350EC3A0D7C6893411CD8FA27" pageId="62" pageNumber="63">Shell. The shell is dextral, solid, hairless, and it is usually discoidal to tectiform in shape. The protoconch is dark brown, with 1.4 to 1.9 whorls. It is almost smooth along the first whorl and shows radial striae along its remaining portion. The teleoconch has from 5.3 to 6.6 rapidly increasing whorls. It is corneous brown in colour on the upper side, mottled with scattered, light-brown small areas. One chestnut band is visible along the last three whorls. On the underside of the last whorl two brown bands are visible. The extent of these bands can be variable, either both of them very thin or the peripheral band very broad. Sometimes a number of thinner additional bands are present next to the main peripheral band or, less frequently, no bands are present at all on the underside of the last whorl. The peri-umbilical area is usually the lightest in colour. The spire is broadly conical, making the shell appear discoidal to tectiform. The periphery of the last whorl is either keeled, angled or rounded. The keel is often very distinct and may be slightly bend downwards. The keel is usually lighter in colour than the remaining surface of the whorls, being light brown to whitish. The external upper surface has very fine but clearly visible, relatively regularly spaced growth lines. Regularly disposed, very small, drop-like tubercles are present all over the teleoconch, especially along the growth lines. The dimensions of the tubercles remain quite stable along the whorls and also their density is approximately the same on all teleoconch whorls. The underside of the last whorl is also equipped with tubercles. The last whorl is only slightly wider than the penultimate whorl, and only slightly descending near the aperture. The umbilicus can either be completely closed or widely open (up to 1/5 of the maximum shell diameter). The aperture is elliptical. The lower palatal side of the last whorl shows a strong callous immediately behind the aperture or none. The peristome is interrupted along the palatal area, and it is only slightly reflected along the lower section. The palatal area never shows any kind callosities or thickenings.</paragraph>
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<paragraph id="1B29FDF726B39FFF6563E40FEFB622A2" pageId="62" pageNumber="63">
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Body. Very similar to
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<taxonomicName id="2BF38945743C1E8B0291E702C15FAF32" class="Gastropoda" family="Geomitridae" genus="Wollastonia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Wollastonia" order="Stylommatophora" pageId="62" pageNumber="63" phylum="Mollusca" rank="genus">Wollastonia</taxonomicName>
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gen. n. Head and neck are usually grey to dark grey. The sides and the posterior upper section of the foot are whitish to grey. The foot is whitish and the sole is longitudinally divided into three areas. The central area is smooth, whereas the two lateral portions are equipped with bands of muscles that are roughly arranged in a chevron pattern. The mantle border is dark grey, with five more or less well-developed lobes. In some specimens, one of these lobes (either lateral or dorsal) may be totally missing. The walls of the pallial cavity are colourless without any stripes or spots. A strong pulmonary vein is visible. The right ommatophoral retractor is independent from both penis and vagina.
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</paragraph>
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<paragraph id="A1EE61C696170CA0731F39A1F47B1F31" pageId="63" pageNumber="64">
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<pageBreakToken id="5A42A5F431BF396138086D4F4DE78580" pageId="63" pageNumber="64" start="start">Genitalia</pageBreakToken>
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. The general arrangement of the genitalia is semi-diaulic monotrematic. A convoluted hermaphroditic duct arises from the gonad. The albumen gland is long and thin and connected to an approximately twice as long sperm-oviduct that consists of a prostatic and a uterine portion. The prostatic part extends to a thin vas deferens, which is approximately twice as long as the sperm-oviduct and which is terminating in the penial complex. The distal portion of the uterine part extends into the free oviduct, which transforms into a vagina at the level of the duct of the bursa copulatrix. The free oviduct is approximately as long as the vagina. The duct of the bursa copulatrix is very wide, approximately as long as the penial complex and usually uniform in diameter. It ends with an oval bursa copulatrix. The transition area between the duct and the bursa itself is not sharply delimited but rather gradually widens. The spermatophore is unknown. One tuft of digitiform glands arises from the proximal part of the vagina. There are usually two, equally long and very rarely branched glands present. A vaginal appendix arises from the
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<normalizedToken id="688B244A876663CB02BEE0E593736631" originalValue="vagina’s">vagina's</normalizedToken>
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wall, just distal of the glandular tuft. Very smooth, rather wide, and little elevated, irregularly spaced pleats run longitudinally along the inner surface of the vagina, which reach into the genital atrium but not as far as the genital orifice. The atrium is short and wide. Its internal walls are smooth. The penial complex consists of a flagellum, an epiphallus (which extends from insertion of the vas deferens to the penial retractor muscle) and a penis that inserts into the genital atrium. The penial flagellum is short, cylindrical and with a pointed apex. It is usually
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<normalizedToken id="74FA234F490D7DF9FDF1426B7B84618B" originalValue="¼">1/4</normalizedToken>
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as long as the epiphallus. Its internal walls are completely smooth. The epiphallus is usually ⅓ longer than the penis. Its internal walls are equipped with 20-25 very fine, elevated, longitudinal pleats. The retractor muscle is strong and approximately half as long as the epiphallus. The penis lacks any muscular or glandular sheath. It is extremely thick-walled and approximately ⅔ as long as the epiphallus. It is cylindrical and slightly swollen in its distal portion. The inner walls of the penis are smooth. The section where the rather large penial papilla is located is usually detectable from outside by virtue of a circular swelling corresponding to the origin of the papilla itself. The penial papilla is approximately half as long as the entire penis. It is conical to subcylindrical in shape and has smooth external walls, with an apically emerging opening. The channel of the penial papilla is thin and narrow. The inner lumen of the penial papilla is occupied by a spongy and sturdy tissue which directly connects with the walls of the epiphallus. The longitudinal section of the penial papilla (Fig. 226) shows that its walls are the continuation of the penial walls that abruptly bend inwards. See also
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<bibRefCitation id="124D8683F7D2B946548C80291E608430" pageId="63" pageNumber="64">Schileyko (2005)</bibRefCitation>
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.
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</paragraph>
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<paragraph id="7264CE5E316E7BDD7F09BE24B921927C" pageId="63" pageNumber="64">
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Jaw and radula. The jaw and the radula of
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<taxonomicName id="0DB691137F3FDA97588B2F428386BAC5" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="63" pageNumber="64" phylum="Mollusca" rank="genus">Callina</taxonomicName>
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are very similar to those of
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<taxonomicName id="C9080CCD4BAF065506A33854BEE8A7D8" class="Gastropoda" family="Geomitridae" genus="Hystricella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hystricella" order="Stylommatophora" pageId="63" pageNumber="64" phylum="Mollusca" rank="genus">Hystricella</taxonomicName>
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and
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<taxonomicName id="6BB01DB34FE59D77BBC7E3B9E13D4B6E" class="Gastropoda" family="Geomitridae" genus="Wollastonia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Wollastonia" order="Stylommatophora" pageId="63" pageNumber="64" phylum="Mollusca" rank="genus">Wollastonia</taxonomicName>
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. Only the number of the lateral and marginal teeth may be slightly higher: 21 to 29. They do not differ markedly from each other, i.e. their shape gradually changes from the first laterals towards the marginals. The jaw is odontognathous and very variable in shape, from almost straight to markedly arched. There are many smooth transverse ridges, ranging from 9 to 10 in number. For jaws and radulae of
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<taxonomicName id="9302E45F711444B07EF607E2B5300076" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="63" pageNumber="64" phylum="Mollusca" rank="genus">Callina</taxonomicName>
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species, see Figs 205-207.
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</paragraph>
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</subSubSection>
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<subSubSection id="8A9B1EEAAAD769F82ACF1D81A89D698E" lastPageId="64" lastPageNumber="65" pageId="63" pageNumber="64" type="distribution">
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<paragraph id="130B2387CC7D5F651CA4B9540BC275A9" pageId="63" pageNumber="64">Distribution.</paragraph>
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<paragraph id="B9B186D4B82E571A6C2CB0B6DAC78AD0" lastPageId="64" lastPageNumber="65" pageId="63" pageNumber="64">
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The genus
|
||
<taxonomicName id="FC88CED402DB3FF640B1A9264DD4E381" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="63" pageNumber="64" phylum="Mollusca" rank="genus">Callina</taxonomicName>
|
||
is endemic to the Island of Porto Santo (Madeiran Archipelago, Portugal). It is distributed along the central-eastern area of the main island. It is not present on the offshore islets. It is only present east of the line
|
||
<pageBreakToken id="AC408039FF94D545D55B981046DBEA1C" pageId="64" pageNumber="65" start="start">Vila</pageBreakToken>
|
||
Baleira-Dragoal-Camacha-Porto de Salemas. For distributional maps of
|
||
<taxonomicName id="E8650C5F8F59456848A8137647CDC365" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Callina</taxonomicName>
|
||
species, see Figs 204, 214, 217 and 224.
|
||
</paragraph>
|
||
<caption id="FEB0294EC2E28219F2146CD6BE4C286E" pageId="64" pageNumber="65">
|
||
<paragraph id="8809E2AF5C727C3447C85B65E7C6B37E" pageId="64" pageNumber="65">
|
||
Figure 204. Distribution of the genus
|
||
<taxonomicName id="C786590F925CFDBF1DD1C4CB0A3D4FA6" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Callina</taxonomicName>
|
||
. Filled circles refer to recent and open circles to fossil records.
|
||
</paragraph>
|
||
</caption>
|
||
<caption id="DB7A95EA8B59AA519DEE6106A65BCE67" pageId="64" pageNumber="65">
|
||
<paragraph id="3B02220E1372FA6281350D71B59DB991" pageId="64" pageNumber="65">
|
||
Figures 205-209. 205, 206 radula and jaw of
|
||
<taxonomicName id="D7D78A0FD9AC55D08750E2A11D24E741" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina rotula" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="species" species="rotula">Callina rotula</taxonomicName>
|
||
from Ribeira da Areia 207 radula and jaw of
|
||
<taxonomicName id="0894A2879F0E8080559C23856FFE0739" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina bulverii" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="species" species="bulverii">Callina bulverii</taxonomicName>
|
||
208 original figure of
|
||
<taxonomicName id="05938CA91F031A0DFB55284DE3BC3DE4" class="Gastropoda" family="Helicidae" genus="Helix" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Helix rotula" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="species" species="rotula">Helix rotula</taxonomicName>
|
||
R. T. Lowe, 1831 (from
|
||
<bibRefCitation id="7806D2728112786701657507004BD8D4" author="Lowe, RT" journalOrPublisher="Transactions of the Cambridge Philosophical Society" pageId="75" pageNumber="76" pagination="1 - 70" title="Primitiae faunae et florae Maderae et Portus Sancti; sive species quaedam novae vel hactenus minus rite cognitae animalium et plantarum in his insulis degentium breviter descriptae." volume="4" year="1831">Lowe 1831</bibRefCitation>
|
||
: pl. 6 fig. 10) 209 lectotype of
|
||
<taxonomicName id="0019D05EAD2423057186811B1CCD616C" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina rotula" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="species" species="rotula">Callina rotula</taxonomicName>
|
||
, ANSP 97116. Scale bar 1 mm.
|
||
</paragraph>
|
||
</caption>
|
||
</subSubSection>
|
||
<subSubSection id="71C42BCD9EE229EA6D45AE9083B812EE" pageId="64" pageNumber="65" type="taxonomic remarks">
|
||
<paragraph id="2F2290FAA6AD28BDC7064665853799A4" pageId="64" pageNumber="65">Taxonomic remarks.</paragraph>
|
||
<paragraph id="9CEEFE648E3D9110551D49572EAF6C46" pageId="64" pageNumber="65">
|
||
The results of the phylogenetic analyses indicate that
|
||
<taxonomicName id="9E56353CECD493F4D6A557B8AA559413" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Callina</taxonomicName>
|
||
is not closely related to
|
||
<taxonomicName id="3E39589B4DD9C66675DA72BC1A9F9AA7" class="Gastropoda" family="Geomitridae" genus="Discula" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discula" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Discula</taxonomicName>
|
||
R. T. Lowe, 1852 s. lat. as previously supposed but represents a well-supported clade that is closely related to
|
||
<taxonomicName id="37AABF852FB9103EA70FE8A48ABEEC81" class="Gastropoda" family="Geomitridae" genus="Hystricella" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Hystricella" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Hystricella</taxonomicName>
|
||
and
|
||
<taxonomicName id="3F22DB5AED6D9D9FF427B6D8EFA045A9" class="Gastropoda" family="Geomitridae" genus="Wollastonia" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Wollastonia" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Wollastonia</taxonomicName>
|
||
gen. n. The taxon was already elevated to generic rank by
|
||
<normalizedToken id="E272D9D29EB911AF752AE2AC32DA9D64" originalValue="Waldén">Walden</normalizedToken>
|
||
(1995) and
|
||
<bibRefCitation id="3C0CF25959E3F335E7160221A6AEA2D5" pageId="64" pageNumber="65">Schileyko (2005)</bibRefCitation>
|
||
, although without providing strong morphological evidence for this decision. An isolated position of
|
||
<taxonomicName id="CD7EE2F672ABD2C1B0E9AACA4C189D3B" lsidName="C. rotula" pageId="64" pageNumber="65" rank="species" species="rotula">C. rotula</taxonomicName>
|
||
within
|
||
<taxonomicName id="11B06DA397838A768D2DD5F27FC5713B" class="Gastropoda" family="Geomitridae" genus="Discula" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discula" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Discula</taxonomicName>
|
||
s. lat. was supposed by these authors on the basis of a closed (or
|
||
<normalizedToken id="4CC9172113A473FE025EECFE7214B469" originalValue="“dot-like”">"dot-like"</normalizedToken>
|
||
following Schileyko, 2005: 2018) umbilicus. However, our morphological (genitalia) and genetic investigations showed that the closed umbilicus of
|
||
<taxonomicName id="802043F94727A6E837F4D767D720776B" lsidName="C. rotula" pageId="64" pageNumber="65" rank="species" species="rotula">C. rotula</taxonomicName>
|
||
cannot be used as a discriminating feature at the genus-level as the widely umbilicated species
|
||
<taxonomicName id="18169063D3417AD3C268C499415FF5E0" lsidName="C. bulverii" pageId="64" pageNumber="65" rank="species" species="bulverii">C. bulverii</taxonomicName>
|
||
also belongs to
|
||
<taxonomicName id="60879A035E90055A85CE892FEAA0354E" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Callina</taxonomicName>
|
||
as supported by the phylogenetic analyses and the peculiar arrangement of pleats on the inner wall of the epiphallus that is equipped with 20-25 very fine, elevated longitudinal pleats (Fig. 211). Contrarily, both
|
||
<taxonomicName id="083DEABD789801BE71B9100627325DD3" class="Gastropoda" family="Geomitridae" genus="Discula" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discula" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Discula</taxonomicName>
|
||
s. str. and
|
||
<taxonomicName id="CEDEAF758EC381056F816170E011516B" class="Gastropoda" family="Geomitridae" genus="Discula" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discula (Mandahlia)" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="subGenus" subGenus="Mandahlia">Discula (Mandahlia)</taxonomicName>
|
||
have an epiphallus with 5-7 strong and rather elevated, longitudinal pleats (Figs 228-230). The penial papilla of
|
||
<taxonomicName id="9A312AFBE315019E9475861F0563347A" class="Gastropoda" family="Geomitridae" genus="Callina" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Callina" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Callina</taxonomicName>
|
||
(Fig. 211 and Fig. 225) always reaches the genital atrium, whereas in
|
||
<taxonomicName id="6517487C9E1A35A47CC0104541B3FA35" class="Gastropoda" family="Geomitridae" genus="Discula" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discula" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="genus">Discula</taxonomicName>
|
||
s. str. and
|
||
<taxonomicName id="AEF9BE0C0298B9E9978871E7EEF8662E" class="Gastropoda" family="Geomitridae" genus="Discula" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discula (Mandahlia)" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="subGenus" subGenus="Mandahlia">Discula (Mandahlia)</taxonomicName>
|
||
the penial papilla is much shorter and never reaches the genital atrium (Figs 228-229).
|
||
<taxonomicName id="55B1D76848419CC2CF25AB5C78B19DF4" class="Gastropoda" family="Geomitridae" genus="Discula" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Discula (Mandahlia)" order="Stylommatophora" pageId="64" pageNumber="65" phylum="Mollusca" rank="subGenus" subGenus="Mandahlia">Discula (Mandahlia)</taxonomicName>
|
||
has a very long epiphallus, at least three times longer than the penis (Fig. 230).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |