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<document id="AF195777EA1408F7272FCCFBCE105629" ID-CLB-Dataset="80415" ID-DOI="10.11646/zootaxa.5155.4.1" ID-GBIF-Dataset="2e18793c-3344-4542-92f3-1775f6276bb7" ID-ISSN="1175-5326" ID-Zenodo-Dep="6691172" ID-ZooBank="E6179D38-97E8-4EAB-8F28-8CF6E508C090" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1655954718010" checkinUser="plazi" docAuthor="Reyes-Gómez, Adriana, Flores-Garza, Rafael, Galeana-Rebolledo, Lizeth, Hernández-Vera, Gerardo, Galván-Villa, Cristian M., Torreblanca-Ramírez, Carmina, Flores-Rodríguez, Pedro, García-Ibañez, Sergio &amp; Ríos-Jara, Eduardo" docDate="2022" docId="03E3EB73FFE3BF0C06E6FEF7FB8A220C" docLanguage="en" docName="zootaxa.5155.4.1.pdf" docOrigin="Zootaxa 5155 (4)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Chaetopleura lurida" docType="treatment" docVersion="6" lastPageNumber="456" masterDocId="FFDA930BFFE6BF090671FFD0FF89275A" masterDocTitle="Intertidal chitons (Mollusca: Polyplacophora) from the rocky coastline of Guerrero, México, with the description of a new species" masterLastPageNumber="492" masterPageNumber="451" pageNumber="456" updateTime="1699349768151" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="20EA11E0E26FDA29344D1A175C77BBFA">Intertidal chitons (Mollusca: Polyplacophora) from the rocky coastline of Guerrero, México, with the description of a new species</mods:title>
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<mods:namePart id="12D981F29F1FFBDB1008087205A2A2BC">Galeana-Rebolledo, Lizeth</mods:namePart>
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<mods:namePart id="C5DEAA1030551F2CD198016831A11D32">Hernández-Vera, Gerardo</mods:namePart>
<mods:affiliation id="A58CC54AD2B1B44E45564289B9CD53ED">Universidad de Guadalajara, Centro Universitario de Ciencias Biológicas y Agropecuarias, Departamento de Botánica y Zoología, Carretera a Nogales km. 15.5, Las Agujas Nextipac, Zapopan, Jalisco, C. P. 45110 México.</mods:affiliation>
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<mods:namePart id="1481156EB9907CF1D12488F2003F73D9">Galván-Villa, Cristian M.</mods:namePart>
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<mods:namePart id="8EFB02DEDCB811E21D9B61900D40E65F">Flores-Rodríguez, Pedro</mods:namePart>
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<mods:namePart id="D482F78A3ECCADB58B88BBF83E85A01F">Ríos-Jara, Eduardo</mods:namePart>
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<mods:date id="59E791601332C8A4C4B5F43F93B170B9">2022</mods:date>
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<treatment id="03E3EB73FFE3BF0C06E6FEF7FB8A220C" ID-DOI="http://doi.org/10.5281/zenodo.6691156" ID-GBIF-Taxon="196192969" ID-Zenodo-Dep="6691156" LSID="urn:lsid:plazi:treatment:03E3EB73FFE3BF0C06E6FEF7FB8A220C" httpUri="http://treatment.plazi.org/id/03E3EB73FFE3BF0C06E6FEF7FB8A220C" lastPageNumber="456" pageId="5" pageNumber="456">
<subSubSection id="C35009EEFFE3BF0C06E6FEF7FD31261B" box="[151,696,295,322]" pageId="5" pageNumber="456" type="nomenclature">
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<heading id="D0BDED09FFE3BF0C06E6FEF7FD31261B" bold="true" box="[151,696,295,322]" fontSize="11" level="1" pageId="5" pageNumber="456" reason="1">
<taxonomicName id="4C4A21E6FFE3BF0C06E6FEF7FD31261B" ID-CoL="TDR7" authority="(G. B. Sowerby I, 1832)" baseAuthorityName="G. B. Sowerby I" baseAuthorityYear="1832" box="[151,696,295,322]" class="Polyplacophora" family="Chaetopleuridae" genus="Chaetopleura" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="lurida">
<emphasis id="B93E8677FFE3BF0C06E6FEF7FD31261B" bold="true" box="[151,696,295,322]" pageId="5" pageNumber="456">
<emphasis id="B93E8677FFE3BF0C06E6FEF7FE052618" bold="true" box="[151,396,295,322]" italics="true" pageId="5" pageNumber="456">Chaetopleura lurida</emphasis>
(G. B. Sowerby I, 1832)
</emphasis>
</taxonomicName>
</heading>
</paragraph>
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<subSubSection id="C35009EEFFE3BF0C06E6FE9BFE27263F" box="[151,430,331,357]" pageId="5" pageNumber="456" type="description">
<paragraph id="8BF55A65FFE3BF0C06E6FE9BFE27263F" blockId="5.[151,696,295,357]" box="[151,430,331,357]" pageId="5" pageNumber="456">
<figureCitation id="137146E0FFE3BF0C06E6FE9BFE9E263F" box="[151,279,331,357]" captionStart="FIGURE 2" captionStartId="9.[151,250,1599,1623]" captionTargetBox="[250,1337,181,1575]" captionTargetId="figure-18@9.[250,1337,181,1575]" captionTargetPageId="9" captionText="FIGURE 2. Dorsal view of the whole specimens that represent the analyzed species. A, Chaetopleura lurida, BL 27.48 x 15.70 mm, Majahua, Acapulco (CNMO 5229). B, Chaetopleura hanselmani, BL 11.02 x 7.16 mm, Tlacopanocha, Acapulco (CNMO 5804). Ischnochiton muscarius, C, BL 16.62 x 9.77 mm, Angosta, Acapulco (CNMO 5202); D, BL 15.12 x 9.55 mm, Barra de Potosí Protegida, Petatlán (CNMO 5338); E, BL 18.30 x 10.17 mm, Troncones, La Unión (CNMO 5327); F, BL 14.98 x 9.51 mm, La Barrita, Petatlán (CNMO 5315). G, Callistochiton elenensis, BL 12.32 x 7.76 mm, La Barrita, Petatlán (CNMO 5823). H, Callistoplax retusa, BL 20.41 x 9.68 mm, Parque de la Reina, Acapulco (CNMO 5185). Stenoplax limaciformis, I, BL 17.56 x 7.21 mm, Parque de la Reina, Acapulco (CNMO 5179); J, BL 20.12 x 9.15 mm, Tlacopanocha, Acapulco (CNMO 5208); K, BL 17.65 x 8.29 mm, Las Gatas, Zihuatanejo de Azueta (CNMO 5254); L, BL 19.78 x 9.84 mm, Isla Grande, Zihuatanejo de Azueta (UAGRO 0024). Chiton albolineatus, M, BL 23.84 x 14.63 mm, Piedra de Tlacoyunque, Tecpan de Galeana (CNMO 5337). Tonicia forbesii, BL 33.41 x 17.86 mm, Isla Grande, Zihuatanejo de Azueta (CNMO 5255). Acanthochitona arragonites, O, BL 8.80 x 5.2 mm, Las Salinas, Copala (CNMO 5267). Lepidochitona salvadorensis, P, BL 10.63 x 5.7 mm, Barra de Potosi Protegida, Zihuatanejo de Azueta (CNMO 5332)." figureDoi="http://doi.org/10.5281/zenodo.6691180" httpUri="https://zenodo.org/record/6691180/files/figure.png" pageId="5" pageNumber="456">Figures 2A</figureCitation>
,
<figureCitation id="137146E0FFE3BF0C0753FE9BFEE9263F" box="[290,352,331,357]" captionStart="FIGURE 3" captionStartId="10.[151,250,1813,1837]" captionTargetBox="[151,1436,181,1790]" captionTargetId="figure-23@10.[151,1436,181,1790]" captionTargetPageId="10" captionText="FIGURE 3. Chaetopleura lurida, disarticulated valves of a specimen BL 20.31; valves in dorsal view A, head valve; B, intermediate valve IV; C, tail valve. Valves in ventral view, D, head valve; E, intermediate valve IV; F, tail valve. SEM images of a specimen BL 15.9 mm length. Valves in dorsal view; G, head valve; H, intermediate valve IV, I, tail valve. J, intermediate valve IV in ventral view." figureDoi="http://doi.org/10.5281/zenodo.6691188" httpUri="https://zenodo.org/record/6691188/files/figure.png" pageId="5" pageNumber="456">3AJ</figureCitation>
,
<figureCitation id="137146E0FFE3BF0C071DFE9BFE27263F" box="[364,430,331,357]" captionStart="FIGURE 4" captionStartId="11.[151,250,1817,1841]" captionTargetBox="[151,1436,181,1793]" captionTargetId="figure-18@11.[151,1436,181,1793]" captionTargetPageId="11" captionText="FIGURE 4. Chaetopleura lurida, SEM images of a specimen BL 15.9 mm, A, girdle corneous hairs; B, girdle spicules; C, radular teeth. Chaetopleura hanselmani, BL 10.11 mm; valves in dorsal view, D, head valve; E, intermediate valve IV. Valves in ventral view, F, head valve; G, intermediate valve IV. SEM images of a specimen BL 10.9 mm; valves in dorsal view, H, head valve; I, intermediate valve IV; K, tail valve. J, valve IV in ventral view." figureDoi="http://doi.org/10.5281/zenodo.6691190" httpUri="https://zenodo.org/record/6691190/files/figure.png" pageId="5" pageNumber="456">4AC</figureCitation>
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<emphasis id="B93E8677FFE3BF0C06E6FE43FEB826F7" bold="true" box="[151,305,403,429]" pageId="5" pageNumber="456">Distribution.</emphasis>
Continuously distributed from Bahía de San Francisquito
<collectingRegion id="498E9487FFE3BF0C05B4FE43FBFC26F7" box="[965,1141,403,429]" country="Mexico" name="Baja California" pageId="5" pageNumber="456">Baja California</collectingRegion>
; Isla Socorro and Clarión, Revillagigedo,
<collectingCountry id="F35D1AF5FFE3BF0C0733FE67FE11268B" box="[322,408,439,465]" name="Mexico" pageId="5" pageNumber="456">México</collectingCountry>
to northern
<collectingCountry id="F35D1AF5FFE3BF0C0450FE67FD1B268B" box="[545,658,439,465]" name="Colombia" pageId="5" pageNumber="456">Colombia</collectingCountry>
, including Gorgona Island (
<bibRefCitation id="EFDB2794FFE3BF0C05BBFE67FB51268B" author="Kaas, P. &amp; Van Belle, R." box="[970,1240,439,466]" pageId="5" pageNumber="456" refId="ref21799" refString="Kaas, P. &amp; Van Belle, R. (1987) Monograph of Living Chitons (Mollusca: Polyplacophora). Vol. 3. Suborder Ischnochitonidae. Chaetopleurinae and Ischnochitoninae. Addition to Vols. 1 &amp; 2. E. J. Brill Backhuys, Leiden, 301 pp." type="book" year="1987">Kaas &amp; Van Belle 1987</bibRefCitation>
).
</paragraph>
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<emphasis id="B93E8677FFE3BF0C06B6FE0BFE0026AF" bold="true" box="[199,393,475,501]" pageId="5" pageNumber="456">Type specimens.</emphasis>
<materialsCitation id="3B225038FFE3BF0C07FEFE0BFBF926AF" ID-GBIF-Occurrence="3818782315" box="[399,1136,475,502]" collectionCode="BMNH" pageId="5" pageNumber="456" specimenCode="BMNH 1982006" specimenCount="1" typeStatus="syntype">
According to
<bibRefCitation id="EFDB2794FFE3BF0C0458FE0CFCCC26AF" author="Kaas, P. &amp; Van Belle, R." box="[553,837,475,502]" pageId="5" pageNumber="456" refId="ref21799" refString="Kaas, P. &amp; Van Belle, R. (1987) Monograph of Living Chitons (Mollusca: Polyplacophora). Vol. 3. Suborder Ischnochitonidae. Chaetopleurinae and Ischnochitoninae. Addition to Vols. 1 &amp; 2. E. J. Brill Backhuys, Leiden, 301 pp." type="book" year="1987">Kaas &amp; Van Belle (1987)</bibRefCitation>
,
<typeStatus id="54F1E4C7FFE3BF0C0520FE0CFC2126AC" box="[849,936,476,502]" pageId="5" pageNumber="456" type="syntype">syntype</typeStatus>
<specimenCode id="DBECF21EFFE3BF0C05DEFE0CFBF926AF" box="[943,1136,475,502]" collectionCode="BMNH" pageId="5" pageNumber="456">BMNH 1982006</specimenCode>
</materialsCitation>
.
</paragraph>
<paragraph id="8BF55A65FFE3BF0C06B6FE2FFD372543" blockId="5.[151,1437,403,1366]" box="[199,702,511,538]" pageId="5" pageNumber="456">
<materialsCitation id="3B225038FFE3BF0C06B6FE2FFE762543" ID-GBIF-Occurrence="3818782335" box="[199,511,511,537]" country="Saint Helena, Ascension and Tristan da Cunha" location="Santa Elena" pageId="5" pageNumber="456" specimenCount="1" typeStatus="holotype">
<emphasis id="B93E8677FFE3BF0C06B6FE2FFEF92543" bold="true" box="[199,368,511,537]" pageId="5" pageNumber="456">
<typeStatus id="54F1E4C7FFE3BF0C06B6FE2FFE8B2543" box="[199,258,511,537]" pageId="5" pageNumber="456">Type</typeStatus>
Locality.
</emphasis>
<collectingCountry id="F35D1AF5FFE3BF0C0706FE2FFE762543" box="[375,511,511,537]" name="Saint Helena, Ascension and Tristan da Cunha" pageId="5" pageNumber="456">Santa Elena</collectingCountry>
</materialsCitation>
, West
<collectingCountry id="F35D1AF5FFE3BF0C0439FE2FFD332543" box="[584,698,511,537]" name="Colombia" pageId="5" pageNumber="456">Colombia</collectingCountry>
.
</paragraph>
<paragraph id="8BF55A65FFE3BF0C06B6FDF3FE2125DF" blockId="5.[151,1437,403,1366]" pageId="5" pageNumber="456">
<emphasis id="B93E8677FFE3BF0C06B6FDF3FE3A2567" bold="true" box="[199,435,547,573]" pageId="5" pageNumber="456">Material examined.</emphasis>
<specimenCount id="9D4C91ECFFE3BF0C07CCFDF3FDE12567" box="[445,616,547,573]" pageId="5" pageNumber="456" type="generic">142 specimens</specimenCount>
; maximum size
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length,
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wide. N (n=22); D (n=8);
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(n=4); U (n=15); M (n=11); L (n=4); P (n=7); K (n=4); A (n=10), B (n=10);
<collectionCode id="ED5BC2A0FFE3BF0C0594FD98FC712538" box="[997,1016,584,610]" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="5" pageNumber="456">R</collectionCode>
(n=6); E (n=12); H (n=5); G (n=7); F (n=9); J (n=8); I (n=10).
</paragraph>
<paragraph id="8BF55A65FFE3BF0C06B6FD5FFC9C2404" blockId="5.[151,1437,403,1366]" pageId="5" pageNumber="456">
<emphasis id="B93E8677FFE3BF0C06B6FD5FFDCD25F3" bold="true" box="[199,580,655,681]" pageId="5" pageNumber="456">Habitat and bathymetric range.</emphasis>
This species can be found in a variety of habitats. Commonly adult animals (
<quantity id="4CB2F780FFE3BF0C06EEFD63FE952594" box="[159,284,691,718]" metricMagnitude="-2" metricUnit="m" metricValue="2.5" metricValueMax="3.0" metricValueMin="2.0" pageId="5" pageNumber="456" unit="mm" value="25.0" valueMax="30.0" valueMin="20.0">2030 mm</quantity>
) occur in the shallow subtidal to
<quantity id="4CB2F780FFE3BF0C04EFFD64FD422594" box="[670,715,692,718]" metricMagnitude="0" metricUnit="m" metricValue="7.0" pageId="5" pageNumber="456" unit="m" value="7.0">7 m</quantity>
depth and on the underside of rocks buried in sand or covered with red and brown crustose algae. Juvenile specimens were usually found in the subtidal (
<quantity id="4CB2F780FFE3BF0C02FFFD07FB6D25A8" box="[1166,1252,727,754]" metricMagnitude="0" metricUnit="m" metricValue="7.5" metricValueMax="10.0" metricValueMin="5.0" pageId="5" pageNumber="456" unit="m" value="7.5" valueMax="10.0" valueMin="5.0">510 m</quantity>
depth) on shells or small stones, rarely on larger rocks. Adults are usually covered with bryozoans, polychaetes, and green or red algae that can also be attached to the girdle.
<taxonomicName id="4C4A21E6FFE3BF0C04FFFCCFFCFD2463" baseAuthorityName="G. B. Sowerby I" baseAuthorityYear="1832" box="[654,884,799,825]" class="Polyplacophora" family="Chaetopleuridae" genus="Chaetopleura" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="lurida">
<emphasis id="B93E8677FFE3BF0C04FFFCCFFCFD2463" box="[654,884,799,825]" italics="true" pageId="5" pageNumber="456">Chaetopleura lurida</emphasis>
</taxonomicName>
was found together with
<taxonomicName id="4C4A21E6FFE3BF0C02E4FCCFFAFA2463" authorityName="Broderip &amp; G. B. Sowerby I" authorityYear="1829" box="[1173,1395,799,825]" class="Polyplacophora" family="Chitonidae" genus="Chiton" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="albolineatus">
<emphasis id="B93E8677FFE3BF0C02E4FCCFFAFA2463" box="[1173,1395,799,825]" italics="true" pageId="5" pageNumber="456">Chiton albolineatus</emphasis>
</taxonomicName>
,
<taxonomicName id="4C4A21E6FFE3BF0C03F2FCF0FE992407" authorityName="G. B. Sowerby I" authorityYear="1832" class="Polyplacophora" family="Chitonidae" genus="Chiton" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="articulatus">
<emphasis id="B93E8677FFE3BF0C03F2FCF0FE992407" italics="true" pageId="5" pageNumber="456">C. articulatus</emphasis>
</taxonomicName>
,
<taxonomicName id="4C4A21E6FFE3BF0C076EFC94FE462407" authorityName="Carpenter" authorityYear="1857" box="[287,463,835,861]" class="Polyplacophora" family="Chitonidae" genus="Tonicia" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="forbesii">
<emphasis id="B93E8677FFE3BF0C076EFC94FE462407" box="[287,463,835,861]" italics="true" pageId="5" pageNumber="456">Tonicia forbesii</emphasis>
</taxonomicName>
, and
<taxonomicName id="4C4A21E6FFE3BF0C047AFC93FC862407" baseAuthorityName="G. B. Sowerby I" baseAuthorityYear="1832" box="[523,783,835,861]" class="Polyplacophora" family="Ischnochitonidae" genus="Stenoplax" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="limaciformis">
<emphasis id="B93E8677FFE3BF0C047AFC93FC862407" box="[523,783,835,861]" italics="true" pageId="5" pageNumber="456">Stenoplax limaciformis</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="C35009EEFFE3BF0C06B6FCB7FB8A220C" pageId="5" pageNumber="456" type="discussion">
<paragraph id="8BF55A65FFE3BF0C06B6FCB7FD2B2490" blockId="5.[151,1437,403,1366]" pageId="5" pageNumber="456">
<emphasis id="B93E8677FFE3BF0C06B6FCB7FEB224DB" bold="true" box="[199,315,871,897]" pageId="5" pageNumber="456">Remarks.</emphasis>
<taxonomicName id="4C4A21E6FFE3BF0C0732FCB7FDA024DB" baseAuthorityName="G. B. Sowerby I" baseAuthorityYear="1832" box="[323,553,871,897]" class="Polyplacophora" family="Chaetopleuridae" genus="Chaetopleura" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="lurida">
<emphasis id="B93E8677FFE3BF0C0732FCB7FDA024DB" box="[323,553,871,897]" italics="true" pageId="5" pageNumber="456">Chaetopleura lurida</emphasis>
</taxonomicName>
differs from
<taxonomicName id="4C4A21E6FFE3BF0C04B1FCB8FCEA24DB" baseAuthorityName="Ferreira" baseAuthorityYear="1982" box="[704,867,871,898]" class="Polyplacophora" family="Chaetopleuridae" genus="Chaetopleura" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="hanselmani">
<emphasis id="B93E8677FFE3BF0C04B1FCB8FD5A24D8" box="[704,723,872,898]" italics="true" pageId="5" pageNumber="456">C</emphasis>
.
<emphasis id="B93E8677FFE3BF0C0493FCB7FCEA24DB" box="[738,867,871,897]" italics="true" pageId="5" pageNumber="456">hanselmani</emphasis>
</taxonomicName>
by the shape of the pustules, which are somewhat cylindrical, and by having the double number of pustules. The maximum length recorded for
<taxonomicName id="4C4A21E6FFE3BF0C02DDFC5CFA9824FF" baseAuthorityName="G. B. Sowerby I" baseAuthorityYear="1832" box="[1196,1297,907,934]" class="Polyplacophora" family="Chaetopleuridae" genus="Chaetopleura" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="lurida">
<emphasis id="B93E8677FFE3BF0C02DDFC5CFB3624FC" box="[1196,1215,908,934]" italics="true" pageId="5" pageNumber="456">C</emphasis>
.
<emphasis id="B93E8677FFE3BF0C02BCFC5BFA9824FF" box="[1229,1297,907,933]" italics="true" pageId="5" pageNumber="456">lurida</emphasis>
</taxonomicName>
is
<quantity id="4CB2F780FFE3BF0C0343FC5BFA1124FC" box="[1330,1432,907,934]" metricMagnitude="-2" metricUnit="m" metricValue="3.09" pageId="5" pageNumber="456" unit="mm" value="30.9">30.9 mm</quantity>
, while
<taxonomicName id="4C4A21E6FFE3BF0C06ADFC60FEF72493" baseAuthorityName="Ferreira" baseAuthorityYear="1982" box="[220,382,943,970]" class="Polyplacophora" family="Chaetopleuridae" genus="Chaetopleura" kingdom="Animalia" order="Chitonida" pageId="5" pageNumber="456" phylum="Mollusca" rank="species" species="hanselmani">
<emphasis id="B93E8677FFE3BF0C06ADFC60FF662490" box="[220,239,944,970]" italics="true" pageId="5" pageNumber="456">C</emphasis>
.
<emphasis id="B93E8677FFE3BF0C068CFC7FFEF72493" box="[253,382,943,969]" italics="true" pageId="5" pageNumber="456">hanselmani</emphasis>
</taxonomicName>
can attain up to
<quantity id="4CB2F780FFE3BF0C0449FC7FFD172490" box="[568,670,943,970]" metricMagnitude="-2" metricUnit="m" metricValue="1.18" pageId="5" pageNumber="456" unit="mm" value="11.8">11.8 mm</quantity>
.
</paragraph>
<paragraph id="8BF55A65FFE3BF0C06B6FC03FB8A220C" blockId="5.[151,1437,403,1366]" pageId="5" pageNumber="456">
The sculpturing pattern for this species has been reported to be highly variable (
<bibRefCitation id="EFDB2794FFE3BF0C022BFC03FA8C24B7" author="Ferreira, A. J." box="[1114,1285,979,1005]" pageId="5" pageNumber="456" pagination="203 - 224" refId="ref20193" refString="Ferreira, A. J. (1983 a) The genus Chaetopleura Shuttleworth, 1853 (Mollusca: Polyplacophora) in the warm temperate and tropical eastern Pacific, southern California to Peru, with the description of two new species. The Veliger, 25 (3), 203 - 224." type="journal article" year="1983">Ferreira 1983a</bibRefCitation>
;
<bibRefCitation id="EFDB2794FFE3BF0C0363FC04FE9E234B" author="Kaas, P. &amp; Van Belle, R." pageId="5" pageNumber="456" refId="ref21799" refString="Kaas, P. &amp; Van Belle, R. (1987) Monograph of Living Chitons (Mollusca: Polyplacophora). Vol. 3. Suborder Ischnochitonidae. Chaetopleurinae and Ischnochitoninae. Addition to Vols. 1 &amp; 2. E. J. Brill Backhuys, Leiden, 301 pp." type="book" year="1987">Kaas &amp; Van Belle 1987</bibRefCitation>
); regarding their observations, we also found morphologic distinctions in the sculpturing arrangement and color. The examination of
<specimenCount id="9D4C91ECFFE3BF0C0472FBCBFD16236F" box="[515,671,1051,1077]" pageId="5" pageNumber="456" type="generic">31 specimens</specimenCount>
from
<collectingRegion id="498E9487FFE3BF0C049AFBCBFC44236F" box="[747,973,1051,1077]" inferredBySuffix="true" pageId="5" pageNumber="456">Baja California Sur</collectingRegion>
(e.g., specimen CNMO 1004 from
<collectingCountry id="F35D1AF5FFE3BF0C0305FBCBFA15236F" box="[1396,1436,1051,1077]" name="Iceland" pageId="5" pageNumber="456">Isla</collectingCountry>
Partida;
<figureCitation id="137146E0FFE3BF0C0685FBEFFEC52303" box="[244,332,1087,1113]" captionStart="FIGURE 20" captionStartId="35.[151,250,1746,1770]" captionTargetBox="[177,1411,181,1722]" captionTargetId="figure-18@35.[177,1411,181,1722]" captionTargetPageId="35" captionText="FIGURE 20. Chiton articulatus, specimen BL 27 mm, El Faro, Mazatlán (CNMO 5661); shows the tegmentum color details A, head valve; B, intermediate valves III-V; C, tail valve. Specimen BL 24.45 mm, Santa Elena, Oaxaca (CNMO 1066); shows color tegmentum details; D, head valve; E, detail of intermediate valves III-V; F, tail valve. Chaetopleura lurida, G, dorsal view of whole specimen BL 21.3 x 13.7 mm, Estacahuite, Oaxaca (CNMO 5813). Chaetopleura lurida, specimen of 27.9 x 15.4 mm, dorsal view of valve I and IV, Isla Partida, Baja California Sur (CNMO 1004), H, head valve and I, valve IV; J, whole specimen BL 25.8 mm, Sayulita, Nayarit; K, Ischnochiton muscarius, whole specimen BL 27.6 mm in dorsal view.Callistochiton elenensis, L, whole specimen BL 19.46 mm, La Paz, Baja California Sur (UAGRO 0060); M, detail of sculpturing of valves II-IV; N, Chiton articulatus, N, whole specimen in dorsal view, BL 37.2 mm, Sayulita, Nayarit (CNMO 40012)." figureDoi="http://doi.org/10.5281/zenodo.6691308" httpUri="https://zenodo.org/record/6691308/files/figure.png" pageId="5" pageNumber="456">Fig. 20I</figureCitation>
) exhibited in general (from 26 examined chitons) pustules aligned more symmetrically in the lateral areas of intermediate valves, than the specimens from
<collectingRegion id="498E9487FFE3BF0C048DFBB3FCE82327" box="[764,865,1123,1149]" country="Mexico" name="Guerrero" pageId="5" pageNumber="456">Guerrero</collectingRegion>
and
<collectingRegion id="498E9487FFE3BF0C05E9FBB3FC652327" box="[920,1004,1123,1149]" country="Mexico" name="Oaxaca" pageId="5" pageNumber="456">Oaxaca</collectingRegion>
(southern
<collectingCountry id="F35D1AF5FFE3BF0C0214FBB3FB352324" box="[1125,1212,1123,1150]" name="Mexico" pageId="5" pageNumber="456">México</collectingCountry>
) that are irregularly scattered nearest the valve´s midline. Regarding the density of pustules, we observed that the chitons (
<specimenCount id="9D4C91ECFFE3BF0C028AFB57FA1D23F8" box="[1275,1428,1159,1186]" pageId="5" pageNumber="456" type="generic">29 specimens</specimenCount>
) from Sayulita,
<collectingRegion id="498E9487FFE3BF0C0733FB7BFE1F239F" box="[322,406,1195,1221]" country="Mexico" name="Nayarit" pageId="5" pageNumber="456">Nayarit</collectingRegion>
(e.g., CNMO 4651,
<figureCitation id="137146E0FFE3BF0C04F7FB7BFD55239F" box="[646,732,1195,1221]" captionStart="FIGURE 20" captionStartId="35.[151,250,1746,1770]" captionTargetBox="[177,1411,181,1722]" captionTargetId="figure-18@35.[177,1411,181,1722]" captionTargetPageId="35" captionText="FIGURE 20. Chiton articulatus, specimen BL 27 mm, El Faro, Mazatlán (CNMO 5661); shows the tegmentum color details A, head valve; B, intermediate valves III-V; C, tail valve. Specimen BL 24.45 mm, Santa Elena, Oaxaca (CNMO 1066); shows color tegmentum details; D, head valve; E, detail of intermediate valves III-V; F, tail valve. Chaetopleura lurida, G, dorsal view of whole specimen BL 21.3 x 13.7 mm, Estacahuite, Oaxaca (CNMO 5813). Chaetopleura lurida, specimen of 27.9 x 15.4 mm, dorsal view of valve I and IV, Isla Partida, Baja California Sur (CNMO 1004), H, head valve and I, valve IV; J, whole specimen BL 25.8 mm, Sayulita, Nayarit; K, Ischnochiton muscarius, whole specimen BL 27.6 mm in dorsal view.Callistochiton elenensis, L, whole specimen BL 19.46 mm, La Paz, Baja California Sur (UAGRO 0060); M, detail of sculpturing of valves II-IV; N, Chiton articulatus, N, whole specimen in dorsal view, BL 37.2 mm, Sayulita, Nayarit (CNMO 40012)." figureDoi="http://doi.org/10.5281/zenodo.6691308" httpUri="https://zenodo.org/record/6691308/files/figure.png" pageId="5" pageNumber="456">Fig 20J</figureCitation>
) showed a higher number of pustule rows in the lateral areas (57) than those from
<collectingRegion id="498E9487FFE3BF0C07FFFB1FFE7A23B3" box="[398,499,1231,1257]" country="Mexico" name="Guerrero" pageId="5" pageNumber="456">Guerrero</collectingRegion>
and
<collectingRegion id="498E9487FFE3BF0C0459FB1FFDF523B3" box="[552,636,1231,1257]" country="Mexico" name="Oaxaca" pageId="5" pageNumber="456">Oaxaca</collectingRegion>
(35). We also identified a latitudinal pattern of color variation:
<collectingRegion id="498E9487FFE3BF0C0339FB1FFA1523B3" box="[1352,1436,1231,1257]" country="Mexico" name="Oaxaca" pageId="5" pageNumber="456">Oaxaca</collectingRegion>
specimens (e.g., CNMO 5813,
<figureCitation id="137146E0FFE3BF0C0780FB23FDDC2257" box="[497,597,1267,1293]" captionStart="FIGURE 20" captionStartId="35.[151,250,1746,1770]" captionTargetBox="[177,1411,181,1722]" captionTargetId="figure-18@35.[177,1411,181,1722]" captionTargetPageId="35" captionText="FIGURE 20. Chiton articulatus, specimen BL 27 mm, El Faro, Mazatlán (CNMO 5661); shows the tegmentum color details A, head valve; B, intermediate valves III-V; C, tail valve. Specimen BL 24.45 mm, Santa Elena, Oaxaca (CNMO 1066); shows color tegmentum details; D, head valve; E, detail of intermediate valves III-V; F, tail valve. Chaetopleura lurida, G, dorsal view of whole specimen BL 21.3 x 13.7 mm, Estacahuite, Oaxaca (CNMO 5813). Chaetopleura lurida, specimen of 27.9 x 15.4 mm, dorsal view of valve I and IV, Isla Partida, Baja California Sur (CNMO 1004), H, head valve and I, valve IV; J, whole specimen BL 25.8 mm, Sayulita, Nayarit; K, Ischnochiton muscarius, whole specimen BL 27.6 mm in dorsal view.Callistochiton elenensis, L, whole specimen BL 19.46 mm, La Paz, Baja California Sur (UAGRO 0060); M, detail of sculpturing of valves II-IV; N, Chiton articulatus, N, whole specimen in dorsal view, BL 37.2 mm, Sayulita, Nayarit (CNMO 40012)." figureDoi="http://doi.org/10.5281/zenodo.6691308" httpUri="https://zenodo.org/record/6691308/files/figure.png" pageId="5" pageNumber="456">Fig. 20G</figureCitation>
) were usually brown, gray, or occasionally pink, while
<collectingRegion id="498E9487FFE3BF0C02CDFB23FAA82257" box="[1212,1313,1267,1293]" country="Mexico" name="Guerrero" pageId="5" pageNumber="456">Guerrero</collectingRegion>
specimens were similar but had more areas with olive green coloration, whereas Mazatlán and
<collectingRegion id="498E9487FFE3BF0C0237FAC7FAA9226B" box="[1094,1312,1303,1329]" country="Mexico" name="Baja California Sur" pageId="5" pageNumber="456">Baja California Sur</collectingRegion>
specimens usually had reddish-brown tones with dark zebra-like lines in the lateral areas.
</paragraph>
</subSubSection>
</treatment>
</document>