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<document id="4ADE309B9BBF6DE53D2840C016951852" ID-DOI="10.11646/zootaxa.4092.2.2" ID-GBIF-Dataset="210d7273-bbb8-410c-aeb7-222cbd828cfc" ID-ISSN="1175-5326" ID-Zenodo-Dep="261197" ID-ZooBank="00C31F86-103C-4425-B40D-78E7D52AB668" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1458117764166" checkinUser="plazi" docAuthor="Ferreira, Luciane Augusto De Azevedo &amp; Melo, Gustavo Augusto Schmidt De" docDate="2016" docId="03B887D23E73FFC2FF2FE0CD684D982F" docLanguage="en" docName="zootaxa.4092.2.2.pdf.imf" docOrigin="Zootaxa 4092 (2)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Petrolisthes marginatus Stimpson 1859" docType="treatment" docVersion="10" lastPageNumber="188" masterDocId="FF81FFAA3E7FFFCFFFB8E4026D649A38" masterDocTitle="Porcelain crabs from Brazil (Crustacea: Decapoda: Anomura: Porcellanidae)" masterLastPageNumber="194" masterPageNumber="175" pageNumber="187" updateTime="1698184866722" updateUser="plazi">
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<mods:title id="E5DCC4C92C75F63C28AABBD58922664A">Porcelain crabs from Brazil (Crustacea: Decapoda: Anomura: Porcellanidae)</mods:title>
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<mods:namePart id="5A1028F70DB2A57FB45AAFD8A5E37EDE">Ferreira, Luciane Augusto De Azevedo</mods:namePart>
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<mods:namePart id="64B270A72E3E7E67D2C108EF54A094B6">Melo, Gustavo Augusto Schmidt De</mods:namePart>
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<mods:title id="47C49FE3881807202CF09592DCB35279">Zootaxa</mods:title>
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<mods:date id="32E452347F4A15BA9DBC043D59633205">2016</mods:date>
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<mods:number id="5A86E285C2E4DEC2AD94F74209E1BEA9">4092</mods:number>
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<mods:identifier id="D2C659862574AAF05319AD0247A367AB" type="DOI">10.11646/zootaxa.4092.2.2</mods:identifier>
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<treatment id="03B887D23E73FFC2FF2FE0CD684D982F" ID-DOI="http://doi.org/10.5281/zenodo.6074904" ID-GBIF-Taxon="117914008" ID-Zenodo-Dep="6074904" LSID="urn:lsid:plazi:treatment:03B887D23E73FFC2FF2FE0CD684D982F" httpUri="http://treatment.plazi.org/id/03B887D23E73FFC2FF2FE0CD684D982F" lastPageId="13" lastPageNumber="188" pageId="12" pageNumber="187">
<subSubSection id="C30B654F3E73FFC3FF2FE0CD6FFD9F50" pageId="12" pageNumber="187" type="nomenclature">
<paragraph id="8BAE36C43E73FFC3FF2FE0CD6F1F9ED2" blockId="12.[151,635,1231,1291]" box="[151,635,1231,1258]" pageId="12" pageNumber="187">
<heading id="D0E681A83E73FFC3FF2FE0CD6F1F9ED2" bold="true" box="[151,635,1231,1258]" fontSize="11" level="1" pageId="12" pageNumber="187" reason="1">
<taxonomicName id="4C114D473E73FFC3FF2FE0CD6F1F9ED2" ID-CoL="ec43a1b1-ad0e-4cd4-85a8-198a91f7a181" authority="Stimpson, 1859" authorityName="Stimpson" authorityYear="1859" box="[151,635,1231,1258]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="12" pageNumber="187" phylum="Arthropoda" rank="species" species="marginatus">
<emphasis id="B965EAD63E73FFC3FF2FE0CD6F1F9ED2" bold="true" box="[151,635,1231,1258]" pageId="12" pageNumber="187">
<emphasis id="B965EAD63E73FFC3FF2FE0CD6CD29ED1" bold="true" box="[151,438,1231,1257]" italics="true" pageId="12" pageNumber="187">Petrolisthes marginatus</emphasis>
Stimpson, 1859
</emphasis>
</taxonomicName>
</heading>
</paragraph>
<paragraph id="8BAE36C43E73FFC3FF2FE0F06C649F33" blockId="12.[151,635,1231,1291]" box="[151,256,1266,1291]" pageId="12" pageNumber="187">
(
<figureCitation id="132A2A413E73FFC3FF27E0F06D869F33" box="[159,226,1266,1291]" captionStart="FIGURE 2" captionStartId="9.[151,250,1860,1882]" captionTargetBox="[233,1351,193,1843]" captionTargetId="figure@9.[233,1351,193,1844]" captionTargetPageId="9" captionText="FIGURE 2. Preserved specimens, dorsal view. A, Pachycheles monilifer (Dana, 1852), ovigerous female (MZUSP- 10596); B, Pachycheles riisei (Stimpson, 1859), ovigerous female (DOUFPE- 7485); C, Pachycheles rugimanus A. Milne-Edwards, 1880, male (USNM- 188445); D, Petrolisthes amoenus (Guérin-Menéville, 1855), ovigerous female (MZUSP- 16713); E, Petrolisthes armatus (Gibbes, 1850), male (MZUSP- 20173); F, Petrolisthes galathinus (Bosc, 1802), ovigerous female (MZUSP- 11303); G, Petrolisthes marginatus Stimpson, 1858, ovigerous female (MNRJ- 3635); H, Petrolisthes rosariensis Werding, 1978, male (MZUSP- 10713). Scales: A, C H (5 mm); B (1 mm)." httpUri="https://zenodo.org/record/261199/files/figure.png" pageId="12" pageNumber="187">Fig. 2</figureCitation>
G)
</paragraph>
<paragraph id="8BAE36C43E73FFC3FF2FE1366FFD9F50" blockId="12.[151,1293,1332,1476]" pageId="12" pageNumber="187">
<taxonomicName id="4C114D473E73FFC3FF2FE1366F049F72" authority="Stimpson, 1858: 227" authorityName="Stimpson" authorityPageNumber="227" authorityYear="1858" box="[151,608,1332,1354]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="12" pageNumber="187" phylum="Arthropoda" rank="species" species="marginatus">
<emphasis id="B965EAD63E73FFC3FF2FE1366CEC9F72" box="[151,392,1332,1354]" italics="true" pageId="12" pageNumber="187">Petrolisthes marginatus</emphasis>
Stimpson, 1858: 227
</taxonomicName>
[
<emphasis id="B965EAD63E73FFC3FDD6E1376F999F72" box="[622,765,1332,1354]" italics="true" pageId="12" pageNumber="187">nomen nudum</emphasis>
]; 1859: 74 (type-locality:
<collectingCountry id="F30676543E73FFC3FBB0E13669089F72" box="[1032,1132,1332,1354]" name="Barbados" pageId="12" pageNumber="187">Barbados</collectingCountry>
).
<taxonomicName id="4C114D473E73FFC3FF2FE1506FF19F50" authority="A. Milne-Edwards, 1878: 229" authorityName="A. Milne-Edwards" authorityPageNumber="229" authorityYear="1878" box="[151,661,1362,1384]" class="Malacostraca" family="Porcellanidae" genus="Porcellana" kingdom="Animalia" order="Decapoda" pageId="12" pageNumber="187" phylum="Arthropoda" rank="species" species="cessacii">
<emphasis id="B965EAD63E73FFC3FF2FE1506C399F50" box="[151,349,1362,1384]" italics="true" pageId="12" pageNumber="187">Porcellana cessacii</emphasis>
A. Milne-Edwards, 1878: 229
</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="C30B654F3E73FFC3FF2FE17368699FFC" pageId="12" pageNumber="187" type="description">
<paragraph id="8BAE36C43E73FFC3FF2FE1736E479FBF" blockId="12.[151,1293,1332,1476]" box="[151,803,1393,1415]" pageId="12" pageNumber="187">
<emphasis id="B965EAD63E73FFC3FF2FE1736C1F9FBF" box="[151,379,1393,1415]" italics="true" pageId="12" pageNumber="187">
<taxonomicName id="4C114D473E73FFC3FF2FE1736C6B9FBF" box="[151,271,1393,1415]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="12" pageNumber="187" phylum="Arthropoda" rank="genus">Petrolisthes</taxonomicName>
cessacii—
</emphasis>
A. Milne-Edwards &amp; Bouvier, 1900: 346.
</paragraph>
<paragraph id="8BAE36C43E73FFC3FF2FE1926E5F9F9E" blockId="12.[151,1293,1332,1476]" box="[151,827,1424,1446]" pageId="12" pageNumber="187">
<taxonomicName id="4C114D473E73FFC3FF2FE1926C0C9F9E" box="[151,360,1424,1446]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="12" pageNumber="187" phylum="Arthropoda" rank="species" species="armatus">
<emphasis id="B965EAD63E73FFC3FF2FE1926C0C9F9E" box="[151,360,1424,1446]" italics="true" pageId="12" pageNumber="187">Petrolisthes armatus</emphasis>
</taxonomicName>
—Haig, 1962: 178 [
<emphasis id="B965EAD63E73FFC3FD8CE1936F3E9F9E" box="[564,602,1425,1446]" italics="true" pageId="12" pageNumber="187">non</emphasis>
<taxonomicName id="4C114D473E73FFC3FDD8E1936E559F9E" authority="(Gibbes)" authorityName="Gibbes" baseAuthorityName="Gibbes" box="[608,817,1424,1446]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="12" pageNumber="187" phylum="Arthropoda" rank="species" species="armatus">
<emphasis id="B965EAD63E73FFC3FDD8E1936FA89F9E" box="[608,716,1425,1446]" italics="true" pageId="12" pageNumber="187">P. armatus</emphasis>
(Gibbes)
</taxonomicName>
].
</paragraph>
<paragraph id="8BAE36C43E73FFC3FF2FE1AD68699FFC" blockId="12.[151,1293,1332,1476]" box="[151,1293,1454,1476]" pageId="12" pageNumber="187">
<emphasis id="B965EAD63E73FFC3FF2FE1AD6CAB9FFC" box="[151,463,1454,1476]" italics="true" pageId="12" pageNumber="187">
Non
<taxonomicName id="4C114D473E73FFC3FF7FE1AC6C5B9FFC" box="[199,319,1454,1476]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="12" pageNumber="187" phylum="Arthropoda" rank="genus">Petrolisthes</taxonomicName>
marginatus—
</emphasis>
Haig, 1960: 47, pl. 20, fig. 1, tab. 10.—Gore, 1982: 17 [=
<taxonomicName id="4C114D473E73FFC3FBA3E1AD68679FFC" authority="Chace, 1962" authorityName="Chace" authorityYear="1962" box="[1051,1283,1454,1476]" class="Malacostraca" family="Porcellanidae" genus="Pachycheles" kingdom="Animalia" order="Decapoda" pageId="12" pageNumber="187" phylum="Arthropoda" rank="species" species="haigae">
<emphasis id="B965EAD63E73FFC3FBA3E1AD691D9FFC" box="[1051,1145,1454,1476]" italics="true" pageId="12" pageNumber="187">P. haigae</emphasis>
Chace, 1962
</taxonomicName>
].
</paragraph>
</subSubSection>
<subSubSection id="C30B654F3E73FFC3FF2FE1F36F489D12" pageId="12" pageNumber="187" type="materials_examined">
<paragraph id="8BAE36C43E73FFC3FF2FE1F369EF9C32" blockId="12.[151,1437,1521,2014]" box="[151,1163,1521,1546]" pageId="12" pageNumber="187">
<emphasis id="B965EAD63E73FFC3FF2FE1F36C1D9C32" bold="true" box="[151,377,1521,1546]" pageId="12" pageNumber="187">Material examined</emphasis>
.
<collectingCountry id="F30676543E73FFC3FE3FE1F36CB49C32" box="[391,464,1521,1546]" name="Brazil" pageId="12" pageNumber="187">Brazil</collectingCountry>
: Trindade
<collectingCountry id="F30676543E73FFC3FDFDE1F36FE89C32" box="[581,652,1521,1546]" name="Iceland" pageId="12" pageNumber="187">Island</collectingCountry>
,
<specimenCount id="9D17FD4D3E73FFC3FD20E1F06F959C32" box="[664,753,1521,1546]" pageId="12" pageNumber="187" type="male">3 males</specimenCount>
, 2 ovigerous females (MNRJ-3635).
</paragraph>
<paragraph id="8BAE36C43E73FFC3FF7FE2176F489D12" blockId="12.[151,1437,1521,2014]" pageId="12" pageNumber="187">
<emphasis id="B965EAD63E73FFC3FF7FE2176CB99C15" bold="true" box="[199,477,1557,1582]" pageId="12" pageNumber="187">Recognition characters</emphasis>
. Carapace subtriangular, as long as broad, covered with short setae, lateral margins plicate; strong epibranchial spine. Outer orbital angle produced into small acute spine. Merus of antenna with subtriangular, serrate lobe bearing a distal acute spine on mesial margin. Chelipeds equal, covered with short setae; merus rugose, with subtriangular serrate-edged lobe on flexor margin; carpus with 3 to 5, usually 4, serrate-edged teeth on flexor margin, extensor margin with row of small oblique tubercles, 1 or 2 posterodistal spines; propodus broad, flattened. Walking legs rugose; merus fringed with plumose setae and spines on extensor margin, propodus with 4 well-developed spines on flexor margin, dactylus with 3 spines on flexor margin. Gonopods present in males. Telson composed of 7 plates.
</paragraph>
</subSubSection>
<subSubSection id="C30B654F3E73FFC2FF7FE3376E879AC0" lastPageId="13" lastPageNumber="188" pageId="12" pageNumber="187" type="description">
<paragraph id="8BAE36C43E73FFC3FF7FE3376FE49D4A" blockId="12.[151,1437,1521,2014]" pageId="12" pageNumber="187">
<emphasis id="B965EAD63E73FFC3FF7FE3376C479D76" bold="true" box="[199,291,1845,1870]" pageId="12" pageNumber="187">Habitat</emphasis>
. In crevices on reefs and other rough permanent substrates. In shallow waters, under rocks, from littoral to
<quantity id="4CE99B213E73FFC3FEBDE3586C549D49" box="[261,304,1882,1906]" metricMagnitude="0" metricUnit="m" metricValue="3.0" pageId="12" pageNumber="187" unit="m" value="3.0">3 m</quantity>
depth (Veloso &amp; Melo 1993).
</paragraph>
<paragraph id="8BAE36C43E73FFC2FF7FE37F6EF59AED" blockId="12.[151,1437,1521,2014]" lastBlockId="13.[151,1436,151,536]" lastPageId="13" lastPageNumber="188" pageId="12" pageNumber="187">
<emphasis id="B965EAD63E73FFC3FF7FE37F6C839DAE" bold="true" box="[199,487,1917,1942]" pageId="12" pageNumber="187">Geographic distribution</emphasis>
. Western Atlantic—USA, Florida; Gulf of
<collectingCountry id="F30676543E73FFC3FC74E37F69419DAE" box="[972,1061,1917,1942]" name="Mexico" pageId="12" pageNumber="187">Mexico</collectingCountry>
;
<collectingCountry id="F30676543E73FFC3FB89E37F69CC9DAE" box="[1073,1192,1917,1942]" name="Nicaragua" pageId="12" pageNumber="187">Nicaragua</collectingCountry>
;
<collectingCountry id="F30676543E73FFC3FB0BE37C686A9DAD" box="[1203,1294,1918,1941]" name="Panama" pageId="12" pageNumber="187">Panama</collectingCountry>
, Gulf of San Blás;
<collectingCountry id="F30676543E73FFC3FF60E3A06C069D82" box="[216,354,1953,1978]" name="Puerto Rico" pageId="12" pageNumber="187">Puerto Rico</collectingCountry>
; Virgin
<collectingCountry id="F30676543E73FFC3FE05E3A36F609D82" box="[445,516,1953,1978]" name="Iceland" pageId="12" pageNumber="187">Island</collectingCountry>
, St. Thomas;
<collectingCountry id="F30676543E73FFC3FD18E3A36E699D82" box="[672,781,1953,1978]" name="Barbados" pageId="12" pageNumber="187">Barbados</collectingCountry>
;
<collectingCountry id="F30676543E73FFC3FCA2E3A36EEF9D82" box="[794,907,1953,1978]" name="Colombia" pageId="12" pageNumber="187">Colombia</collectingCountry>
, Providence, Rosario and Santa
<collectingCountry id="F30676543E73FFC3FB42E3A068599D81" box="[1274,1341,1954,1977]" name="Malta" pageId="12" pageNumber="187">Marta</collectingCountry>
Islands;
<collectingCountry id="F30676543E73FFC3FF2FE3C46D909DE6" box="[151,244,1990,2014]" name="Curaçao" pageId="12" pageNumber="187">Curacao</collectingCountry>
and
<collectingCountry id="F30676543E73FFC3FE8AE3C76CEA9DE6" box="[306,398,1989,2014]" name="Bonaire, Sint Eustatius and Saba" pageId="12" pageNumber="187">Bonaire</collectingCountry>
;
<collectingCountry id="F30676543E73FFC3FE25E3C76F779DE6" box="[413,531,1989,2014]" name="Venezuela" pageId="12" pageNumber="187">Venezuela</collectingCountry>
, Blanquilla, Los Roques, Aves, Margarita and Cubagua Islands;
<collectingCountry id="F30676543E73FFC2FAB2E3C76D8A9A88" lastPageId="13" lastPageNumber="188" name="Trinidad and Tobago" pageId="12" pageNumber="187">Trinidad and Tobago</collectingCountry>
; and
<collectingCountry id="F30676543E72FFC2FE95E4956C159A88" box="[301,369,151,176]" name="Brazil" pageId="13" pageNumber="188">Brazil</collectingCountry>
(Fernando de Noronha and Trindade Islands and Maranhão). Eastern Atlantic—Africa,
<collectingCountry id="F30676543E72FFC2FAD9E4956DBF9AED" name="Cape Verde" pageId="13" pageNumber="188">Cabo Verde</collectingCountry>
,
<collectingCountry id="F30676543E72FFC2FF5EE4BE6C2A9AED" box="[230,334,188,213]" name="Equatorial Guinea" pageId="13" pageNumber="188">Annobon</collectingCountry>
and
<collectingCountry id="F30676543E72FFC2FE3DE4BE6C9E9AED" box="[389,506,188,213]" name="Saint Helena, Ascension and Tristan da Cunha" pageId="13" pageNumber="188">Ascension</collectingCountry>
Islands and from
<collectingCountry id="F30676543E72FFC2FD7CE4BE6E799AED" box="[708,797,188,213]" name="Senegal" pageId="13" pageNumber="188">Senegal</collectingCountry>
to
<collectingCountry id="F30676543E72FFC2FCF8E4BE6EE99AED" box="[832,909,188,213]" name="Ghana" pageId="13" pageNumber="188">Ghana</collectingCountry>
.
</paragraph>
<paragraph id="8BAE36C43E72FFC2FF7FE4DD6E879AC0" blockId="13.[151,1436,151,536]" box="[199,995,223,248]" pageId="13" pageNumber="188">
<emphasis id="B965EAD63E72FFC2FF7FE4DD6C519AC0" bold="true" box="[199,309,223,248]" pageId="13" pageNumber="188">Variation</emphasis>
. Number of spines on carpus of chelipeds varies from 2 to 4.
</paragraph>
</subSubSection>
<subSubSection id="C30B654F3E72FFC2FF7FE507684D982F" pageId="13" pageNumber="188" type="discussion">
<paragraph id="8BAE36C43E72FFC2FF7FE5076C7A9B5D" blockId="13.[151,1436,151,536]" pageId="13" pageNumber="188">
<emphasis id="B965EAD63E72FFC2FF7FE5076C509B24" bold="true" box="[199,308,261,284]" pageId="13" pageNumber="188">Remarks</emphasis>
. Stimpson (1859) briefly described this species based on the single
<typeStatus id="54AA88663E72FFC2FB81E50669FF9B25" box="[1081,1179,260,285]" pageId="13" pageNumber="188" type="holotype">holotype</typeStatus>
from
<collectingCountry id="F30676543E72FFC2FB5AE50668289B25" box="[1250,1356,260,285]" name="Barbados" pageId="13" pageNumber="188">Barbados</collectingCountry>
but no illustration of the species was given. The
<typeStatus id="54AA88663E72FFC2FDDEE5256FAC9B78" box="[614,712,295,320]" pageId="13" pageNumber="188" type="holotype">holotype</typeStatus>
was probably destroyed by the Great Chicago Fire (Evans 1967; Gore 1983).
</paragraph>
<paragraph id="8BAE36C43E72FFC2FF7FE56D69CA9B95" blockId="13.[151,1436,151,536]" pageId="13" pageNumber="188">
The identity of
<taxonomicName id="4C114D473E72FFC2FEC3E5726F7C9BBF" box="[379,536,368,391]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="13" pageNumber="188" phylum="Arthropoda" rank="species" species="marginatus">
<emphasis id="B965EAD63E72FFC2FEC3E5726F7C9BBF" box="[379,536,368,391]" italics="true" pageId="13" pageNumber="188">P. marginatus</emphasis>
</taxonomicName>
was reviewed by Gore (1983), who considered
<taxonomicName id="4C114D473E72FFC2FBFBE5726DAB9B94" authority="A. Milne-Edwards, 1878" authorityName="A. Milne-Edwards" authorityYear="1878" class="Malacostraca" family="Porcellanidae" genus="Porcellana" kingdom="Animalia" order="Decapoda" pageId="13" pageNumber="188" phylum="Arthropoda" rank="species" species="cessacii">
<emphasis id="B965EAD63E72FFC2FBFBE57269DD9BBF" box="[1091,1209,368,391]" italics="true" pageId="13" pageNumber="188">P. cessacii</emphasis>
A. Milne-Edwards, 1878
</taxonomicName>
from the Gulf of
<collectingCountry id="F30676543E72FFC2FE2DE5966C8E9B95" box="[405,490,404,429]" name="Mexico" pageId="13" pageNumber="188">Mexico</collectingCountry>
and Caribbean Sea, as a junior synonym of the former species.
</paragraph>
<paragraph id="8BAE36C43E72FFC2FF77E5B5684D982F" blockId="13.[151,1436,151,536]" pageId="13" pageNumber="188">
Material from the eastern Pacific identified to
<taxonomicName id="4C114D473E72FFC2FD65E5BA6E1C9BF7" box="[733,888,440,463]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="13" pageNumber="188" phylum="Arthropoda" rank="species" species="marginatus">
<emphasis id="B965EAD63E72FFC2FD65E5BA6E1C9BF7" box="[733,888,440,463]" italics="true" pageId="13" pageNumber="188">P. marginatus</emphasis>
</taxonomicName>
, belongs to
<taxonomicName id="4C114D473E72FFC2FBBDE5BA68619BE8" authority="Chace, 1962" authorityName="Chace" authorityYear="1962" box="[1029,1285,439,464]" class="Malacostraca" family="Porcellanidae" genus="Pachycheles" kingdom="Animalia" order="Decapoda" pageId="13" pageNumber="188" phylum="Arthropoda" rank="species" species="haigae">
<emphasis id="B965EAD63E72FFC2FBBDE5BA690B9BF7" box="[1029,1135,439,463]" italics="true" pageId="13" pageNumber="188">P. haigae</emphasis>
Chace, 1962
</taxonomicName>
, which is the sister-species of
<taxonomicName id="4C114D473E72FFC2FED8E5DE6F669BCB" box="[352,514,476,499]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="13" pageNumber="188" phylum="Arthropoda" rank="species" species="marginatus">
<emphasis id="B965EAD63E72FFC2FED8E5DE6F669BCB" box="[352,514,476,499]" italics="true" pageId="13" pageNumber="188">P. marginatus</emphasis>
</taxonomicName>
from the eastern Pacific. Chace (1962) noted that the two species may be differentiated by the number of the epibranchial spines: two in
<taxonomicName id="4C114D473E72FFC2FCE0E6026EA4982F" box="[856,960,511,535]" class="Malacostraca" family="Porcellanidae" genus="Pachycheles" kingdom="Animalia" order="Decapoda" pageId="13" pageNumber="188" phylum="Arthropoda" rank="species" species="haigae">
<emphasis id="B965EAD63E72FFC2FCE0E6026EA4982F" box="[856,960,511,535]" italics="true" pageId="13" pageNumber="188">P. haigae</emphasis>
</taxonomicName>
instead of one in
<taxonomicName id="4C114D473E72FFC2FB30E6026846982F" box="[1160,1314,512,535]" class="Malacostraca" family="Porcellanidae" genus="Petrolisthes" kingdom="Animalia" order="Decapoda" pageId="13" pageNumber="188" phylum="Arthropoda" rank="species" species="marginatus">
<emphasis id="B965EAD63E72FFC2FB30E6026846982F" box="[1160,1314,512,535]" italics="true" pageId="13" pageNumber="188">P. marginatus</emphasis>
</taxonomicName>
.
</paragraph>
</subSubSection>
</treatment>
</document>