treatments-xml/data/03/A4/A1/03A4A163FFC4E365BA4046689ACB4A61.xml
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<document id="FB4400FDAA56F9826BB7434A5E1A1009" ID-CLB-Dataset="50742" ID-DOI="10.5281/zenodo.172563" ID-GBIF-Dataset="d325feef-2116-4c36-9571-ea93d68c89a4" ID-ISSN="1175­5326" ID-Zenodo-Dep="172563" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1459758407235" checkinUser="plazi" docAuthor="Cuezzo, Maria Gabriela" docDate="2006" docId="03A4A163FFC4E365BA4046689ACB4A61" docLanguage="en" docName="zt01221p023.pdf" docOrigin="Zootaxa 1221" docStyle="DocumentStyle:FA7E419B012A62B0FC3AC15A186C3DAF.3:Zootaxa.2001-2006.journal_article" docStyleId="FA7E419B012A62B0FC3AC15A186C3DAF" docStyleName="Zootaxa.2001-2006.journal_article" docStyleVersion="3" docTitle="Labyrinthus Beck 1837" docType="treatment" docVersion="10" lastPageNumber="4" masterDocId="FF9DD91BFFC6E366BB48435199524E1C" masterDocTitle="On a new species of Isomeria Beck and redescription of species of Labyrinthus Beck from South America (Gastropoda: Stylommatophora: Camaenidae)" masterLastPageNumber="23" masterPageNumber="1" pageNumber="3" updateTime="1698218777145" updateUser="ExternalLinkService">
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<mods:title id="662867586D4890A1165E75603F972CEE">On a new species of Isomeria Beck and redescription of species of Labyrinthus Beck from South America (Gastropoda: Stylommatophora: Camaenidae)</mods:title>
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<mods:namePart id="B9E048BB2023E03E2CA499D0338CDC8B">Cuezzo, Maria Gabriela</mods:namePart>
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<mods:date id="4DA1B9EE232D97433FA5CD496CD6D5F1">2006</mods:date>
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<treatment id="03A4A163FFC4E365BA4046689ACB4A61" ID-DOI="http://doi.org/10.5281/zenodo.6261403" ID-GBIF-Taxon="119344236" ID-Zenodo-Dep="6261403" LSID="urn:lsid:plazi:treatment:03A4A163FFC4E365BA4046689ACB4A61" httpUri="http://treatment.plazi.org/id/03A4A163FFC4E365BA4046689ACB4A61" lastPageId="3" lastPageNumber="4" pageId="2" pageNumber="3">
<subSubSection id="C31743FEFFC4E364BA4046689BD34B4F" box="[264,641,1337,1363]" pageId="2" pageNumber="3" type="nomenclature">
<paragraph id="8BB21075FFC4E364BA4046689BD34B4F" blockId="2.[264,836,1233,1363]" box="[264,641,1337,1363]" pageId="2" pageNumber="3">
<heading id="D0FAA719FFC4E364BA4046689BD34B4F" bold="true" box="[264,641,1337,1363]" fontSize="11" level="1" pageId="2" pageNumber="3" reason="1">
<emphasis id="B979CC67FFC4E364BA4046689BD34B4F" bold="true" box="[264,641,1337,1363]" pageId="2" pageNumber="3">
Genus
<taxonomicName id="4C0D6BF6FFC4E364BA1746689BD34B4F" ID-CoL="7P6PH" authority="Beck, 1837" authorityName="Beck" authorityYear="1837" box="[351,641,1337,1363]" class="Gastropoda" family="Labyrinthidae" genus="Labyrinthus" higherTaxonomySource="CoL" kingdom="Animalia" order="Stylommatophora" pageId="2" pageNumber="3" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC4E364BA17466898A14B4F" bold="true" box="[351,499,1337,1363]" italics="true" pageId="2" pageNumber="3">Labyrinthus</emphasis>
Beck, 1837
</taxonomicName>
</emphasis>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="C31743FEFFC4E364BA4046D59ABE4BDA" pageId="2" pageNumber="3" type="materials_examined">
<paragraph id="8BB21075FFC4E364BA4046D59ABE4BDA" blockId="2.[264,1323,1412,1838]" pageId="2" pageNumber="3">
<emphasis id="B979CC67FFC4E364BA4046D598E14B82" bold="true" box="[264,435,1412,1438]" pageId="2" pageNumber="3">
<typeStatus id="54B6AED7FFC4E364BA4046D598174B82" box="[264,325,1412,1438]" pageId="2" pageNumber="3">Type</typeStatus>
species:
</emphasis>
<taxonomicName id="4C0D6BF6FFC4E364BA8946D59A574B82" authority="Lightfoot, 1786" authorityName="Lightfoot" authorityYear="1786" box="[449,773,1412,1438]" class="Gastropoda" family="Helicidae" genus="Helix" higherTaxonomySource="CoL" kingdom="Animalia" order="Stylommatophora" pageId="2" pageNumber="3" phylum="Mollusca" rank="species" species="otis">
<emphasis id="B979CC67FFC4E364BA8946D59B6A4B81" box="[449,568,1412,1437]" italics="true" pageId="2" pageNumber="3">Helix otis</emphasis>
Lightfoot, 1786
</taxonomicName>
(=
<taxonomicName id="4C0D6BF6FFC4E364B87346D59DCF4B82" authority="Chemnitz" authorityName="Chemnitz" box="[827,1181,1412,1438]" class="Gastropoda" family="Helicidae" genus="Helix" higherTaxonomySource="CoL" kingdom="Animalia" order="Stylommatophora" pageId="2" pageNumber="3" phylum="Mollusca" rank="species" species="labyrinthus">
<emphasis id="B979CC67FFC4E364B87346D59D5C4B81" box="[827,1038,1412,1437]" italics="true" pageId="2" pageNumber="3">Helix labyrinthus</emphasis>
&quot;Chemnitz
</taxonomicName>
&quot; Deshayes, 1838) by subsequent designation by
<bibRefCitation id="EF9C6D84FFC4E364B9FE46FD9ABB4BDA" author="Herrmannsen" box="[694,1001,1452,1478]" pageId="2" pageNumber="23" refString="Herrmannsen, A. N. 1846. Indicis generum Malacozoorum primordia. Cassell, 590 pp." type="book" year="1846">Herrmannsen (1846: 569)</bibRefCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="C31743FEFFC4E364BA7046859AD64932" pageId="2" pageNumber="3" type="diagnosis">
<paragraph id="8BB21075FFC4E364BA7046859AD64932" blockId="2.[264,1323,1412,1838]" pageId="2" pageNumber="3">
<emphasis id="B979CC67FFC4E364BA70468598E84BF2" bold="true" box="[312,442,1492,1518]" pageId="2" pageNumber="3">Diagnosis:</emphasis>
Shell small to large (
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) usually uniformly colored; sculpture of wrinkles or granulations, without axial ribs; periphery angulated or keeled; aperture strongly obstructed with denticles and lamellae; shell mark of basal internal tooth always diagonal respect to apertural lip; parietal single lamellae rectangular, merged or not with parietal lip; parietal lip usually raised, lower inner internal palatal lip wall with T­shaped lamellae, or two Y­shaped teeth or conical transverse lamellae; jaw smooth or weakly ribbed; alveoli of ovotestis ovoid to digitiform; bursa copulatrix oval, well differentiated, reflexed over distal portion of duct; penis (in some species also vagina) with hooked denticles of
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of basal plate maximum length.
</paragraph>
</subSubSection>
<subSubSection id="C31743FEFFC5E365BA70424A98254F9A" pageId="3" pageNumber="4" type="distribution">
<paragraph id="8BB21075FFC5E365BA70424A98254F9A" blockId="3.[264,1324,283,1150]" pageId="3" pageNumber="4">
<emphasis id="B979CC67FFC5E365BA70424A98884F29" bold="true" box="[312,474,283,309]" pageId="3" pageNumber="4">Distribution:</emphasis>
From
<collectingCountry id="F31A50E5FFC5E365B966424D9BE24F2A" box="[558,688,284,310]" name="Costa Rica" pageId="3" pageNumber="4">Costa Rica</collectingCountry>
south to the Cuzco department in
<collectingCountry id="F31A50E5FFC5E365BF1C424D9DDC4F2A" box="[1108,1166,284,310]" name="Peru" pageId="3" pageNumber="4">Peru</collectingCountry>
. Easternmost records are in Pará
<collectingCountry id="F31A50E5FFC5E365BAAF42159B604F42" box="[487,562,324,350]" name="Brazil" pageId="3" pageNumber="4">Brazil</collectingCountry>
, although
<taxonomicName id="4C0D6BF6FFC5E365B9E342159A6B4F41" box="[683,825,324,349]" class="Gastropoda" family="Labyrinthidae" genus="Labyrinthus" higherTaxonomySource="CoL" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365B9E342159A6B4F41" box="[683,825,324,349]" italics="true" pageId="3" pageNumber="4">Labyrinthus</emphasis>
</taxonomicName>
is mainly known from
<collectingCountry id="F31A50E5FFC5E365BF0F42159DEC4F42" box="[1095,1214,324,350]" name="Colombia" pageId="3" pageNumber="4">Colombia</collectingCountry>
,
<collectingCountry id="F31A50E5FFC5E365BF8142159C784F42" box="[1225,1322,324,350]" name="Ecuador" pageId="3" pageNumber="4">Ecuador</collectingCountry>
and
<collectingCountry id="F31A50E5FFC5E365BA72423D98214F9A" box="[314,371,364,390]" name="Peru" pageId="3" pageNumber="4">Peru</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="C31743FEFFC5E365BA7042C29ACB4A61" pageId="3" pageNumber="4" type="discussion">
<paragraph id="8BB21075FFC5E365BA7042C29A504C52" blockId="3.[264,1324,283,1150]" pageId="3" pageNumber="4">
<emphasis id="B979CC67FFC5E365BA7042C298944FB1" bold="true" box="[312,454,403,429]" pageId="3" pageNumber="4">Discussion:</emphasis>
<taxonomicName id="4C0D6BF6FFC5E365BA8442C59B084FB1" box="[460,602,404,429]" class="Gastropoda" family="Labyrinthidae" genus="Labyrinthus" higherTaxonomySource="CoL" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365BA8442C59B084FB1" box="[460,602,404,429]" italics="true" pageId="3" pageNumber="4">Labyrinthus</emphasis>
</taxonomicName>
is a monophyletic genus, characterized by the following synapomorphies (
<bibRefCitation id="EF9C6D84FFC5E365BAF842ED9B014FCA" author="Cuezzo" box="[432,595,444,470]" pageId="3" pageNumber="23" refString="Cuezzo, M. G. (2003) Phylogenetic analysis of the Camaenidae with special emphasis on the American taxa (Mollusca: Stylommatophora). Zoological Journal of the Linnean Society, 138, 449 - 476." type="journal article" year="2003">Cuezzo 2003</bibRefCitation>
): basal internal tooth with diagonal shell mark; internal parietal teeth rectangular or folded merging with the peristome; lower internal palatal wall with two Y­shaped teeth; body whorl shouldered; ovotestis with digitiform alveoli and bursa copulatrix sac reflexed over the duct.
</paragraph>
<paragraph id="8BB21075FFC5E365BA70410D9ACB4A61" blockId="3.[264,1324,283,1150]" pageId="3" pageNumber="4">
The presence of the reflected penis­epiphallus attached by muscular strands is a character shared with its closest relatives
<taxonomicName id="4C0D6BF6FFC5E365B98341D59A614C81" box="[715,819,644,669]" class="Gastropoda" family="Camaenidae" genus="Isomeria" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365B98341D59A614C81" box="[715,819,644,669]" italics="true" pageId="3" pageNumber="4">Isomeria</emphasis>
</taxonomicName>
and
<emphasis id="B979CC67FFC5E365B83A41D59AA64C81" box="[882,1012,644,669]" italics="true" pageId="3" pageNumber="4">
<taxonomicName id="4C0D6BF6FFC5E365B83A41D59AA24C81" box="[882,1008,644,669]" class="Gastropoda" family="Camaenidae" genus="Solaropsis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">Solaropsis</taxonomicName>
.
</emphasis>
Internal hooked denticles are present on top of the ridges in penis and vagina in the two investigated species of
<taxonomicName id="4C0D6BF6FFC5E365BA40418598224CF1" box="[264,368,724,749]" class="Gastropoda" family="Camaenidae" genus="Isomeria" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365BA40418598224CF1" box="[264,368,724,749]" italics="true" pageId="3" pageNumber="4">Isomeria</emphasis>
</taxonomicName>
but not in the eight species of
<taxonomicName id="4C0D6BF6FFC5E365B99741859A084CF1" box="[735,858,724,749]" class="Gastropoda" family="Camaenidae" genus="Solaropsis" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365B99741859A084CF1" box="[735,858,724,749]" italics="true" pageId="3" pageNumber="4">Solaropsis</emphasis>
</taxonomicName>
, in which anatomy was studied (
<bibRefCitation id="EF9C6D84FFC5E365BFA8418598144D0A" author="Tillier" pageId="3" pageNumber="23" refString="Tillier, S. (1980) Gasteropodes terrestres et fluviatilles de Guyane francaise" type="book" year="1980">Tillier 1980</bibRefCitation>
,
<bibRefCitation id="EF9C6D84FFC5E365BA1C41AD98A14D0A" author="Cuezzo" box="[340,499,764,790]" pageId="3" pageNumber="23" refString="Cuezzo, M. G. &amp; Fernandez, I. (2001) A new species of the land gastropod genus Solaropsis Beck, 1837 (Helicoidea: Camaenidae) from Bolivia. The Veliger, 44, 315 - 324." type="journal article" year="2001">Cuezzo 2001</bibRefCitation>
). Penial hooked denticles have only been reported in the
<taxonomicName id="4C0D6BF6FFC5E365BFFA41AD98134D22" class="Gastropoda" family="Scolodontidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="family">Scolodontidae</taxonomicName>
(=
<taxonomicName id="4C0D6BF6FFC5E365BA2640759B464D22" box="[366,532,804,830]" class="Gastropoda" family="Scolodontidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="family">Systrophiidae</taxonomicName>
), in
<taxonomicName id="4C0D6BF6FFC5E365B90240759B8E4D22" box="[586,732,804,830]" class="Gastropoda" family="Streptaxidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="family">Streptaxidae</taxonomicName>
as well as in some
<taxonomicName id="4C0D6BF6FFC5E365B88540759D6F4D22" box="[973,1085,804,830]" class="Gastropoda" family="Zonitidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="family">Zonitidae</taxonomicName>
and
<taxonomicName id="4C0D6BF6FFC5E365BF3340759C594D22" box="[1147,1291,804,830]" class="Gastropoda" family="Oxychilidae" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="family">Oxychilidae</taxonomicName>
in the
<taxonomicName id="4C0D6BF6FFC5E365BA7E401D9B8E4D7A" authority="Hausdorf 2003" authorityName="Hausdorf" authorityYear="2003" box="[310,732,844,870]" class="Gastropoda" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="order">
Stylommatophora (
<bibRefCitation id="EF9C6D84FFC5E365B951401D9B814D7A" author="Hausdorf" box="[537,723,844,870]" pageId="3" pageNumber="23" refString="Hausdorf, B. (2003) Systematic position and taxonomy of the genus Hirtudiscus from Colombia (Gastropoda: Scolodontidae). Journal of Molluscan Studies, 69, 179 - 186." type="journal article" year="2003">Hausdorf 2003</bibRefCitation>
)
</taxonomicName>
. Similar hooked denticles were reported in dorid nudibranchs (
<bibRefCitation id="EF9C6D84FFC5E365BAEF40259B6C4D92" author="Valdes" box="[423,574,884,910]" pageId="3" pageNumber="23" refString="Valdes, A. (2004) Morphology of the penial hooks and vaginal cuticular lining of some dorid nudibranchs (Mollusca, Opisthobranchia). American Malacological Bulletin, 18, 49 - 53." type="journal article" year="2004">Valdés 2004</bibRefCitation>
), in which they function to reinforce the anchoring of the penis inside the vagina of the partner to prevent premature separation (
<bibRefCitation id="EF9C6D84FFC5E365BF4440CD9DF64DAA" author="Valdes" box="[1036,1188,924,950]" pageId="3" pageNumber="23" refString="Valdes, A. (2004) Morphology of the penial hooks and vaginal cuticular lining of some dorid nudibranchs (Mollusca, Opisthobranchia). American Malacological Bulletin, 18, 49 - 53." type="journal article" year="2004">Valdés 2004</bibRefCitation>
). However, in both
<taxonomicName id="4C0D6BF6FFC5E365BA29409598BC4DC1" box="[353,494,964,989]" class="Gastropoda" family="Labyrinthidae" genus="Labyrinthus" higherTaxonomySource="CoL" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365BA29409598BC4DC1" box="[353,494,964,989]" italics="true" pageId="3" pageNumber="4">Labyrinthus</emphasis>
</taxonomicName>
and
<taxonomicName id="4C0D6BF6FFC5E365B96E40959BDC4DC1" box="[550,654,964,989]" class="Gastropoda" family="Camaenidae" genus="Isomeria" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365B96E40959BDC4DC1" box="[550,654,964,989]" italics="true" pageId="3" pageNumber="4">Isomeria</emphasis>
</taxonomicName>
the hooked denticles are present not only in the penis but also in the vagina in most of the species. The function of the penial and vaginal hooked denticles in both genera is probably related to sexual stimulation and to anchoring penis in the vagina. Penial denticles are smaller in
<taxonomicName id="4C0D6BF6FFC5E365B844476D9A274A49" box="[780,885,1084,1109]" class="Gastropoda" family="Camaenidae" genus="Isomeria" higherTaxonomySource="GBIF" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365B844476D9A274A49" box="[780,885,1084,1109]" italics="true" pageId="3" pageNumber="4">Isomeria</emphasis>
</taxonomicName>
(
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of basal plate length) than in
<taxonomicName id="4C0D6BF6FFC5E365BA28473598BC4A61" box="[352,494,1124,1149]" class="Gastropoda" family="Labyrinthidae" genus="Labyrinthus" higherTaxonomySource="CoL" kingdom="Animalia" order="Stylommatophora" pageId="3" pageNumber="4" phylum="Mollusca" rank="genus">
<emphasis id="B979CC67FFC5E365BA28473598BC4A61" box="[352,494,1124,1149]" italics="true" pageId="3" pageNumber="4">Labyrinthus</emphasis>
</taxonomicName>
(
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of basal plate length).
</paragraph>
</subSubSection>
</treatment>
</document>