treatments-xml/data/A6/4C/DA/A64CDA30322C57E0B756170F03C53113.xml

<document id="8AD3F95F1A90687CE2240182FA0AB734" ID-DOI="10.3897/BDJ.12.e121508" ID-PMC="PMC11134053" ID-PubMed="38812888" ID-ZooBank="ACAFF6E1-94C5-4D4A-9FA2-5BB0D2E494DB" ID-manuscript="24404" ID-publisher-id="121508" URI-arpha="6D478A03-351A-5B84-B22D-DF71552C1D25" URI-zoobank="ACAFF6E1-94C5-4D4A-9FA2-5BB0D2E494DB" XM.bibliography_approvedBy="admin" XM.taxonomicNames_approvedBy="admin" XM.treatmentCitations_approvedBy="admin" XM.treatments_approvedBy="admin" article-type="research-article" checkinTime="1716281014896" checkinUser="pensoft" docAuthor="Riehl, Torben, Schienbein, Katharina Ellen &amp; Mifsud, Constantine" docDate="2024" docId="A64CDA30322C57E0B756170F03C53113" docLanguage="en" docName="BiodivDatJour 12: e121508" docOrigin="Biodiversity Data Journal 12" docSource="https://bdj.pensoft.net/article/121508/download/xml/" docStyle="DocumentStyle:PensoftTaxPub.0000.journal_article.bdj" docStyleName="PensoftTaxPub.0000.journal_article.bdj" docTitle="Mexicope maletensis Riehl &amp; Schienbein &amp; Mifsud 2024, sp. nov." docType="treatment" docUuid="049ED44F-A900-47AE-A386-0126ACF7061A" docUuidSource="ZooBank" docVersion="2" masterDocId="6D478A03351A5B84B22DDF71552C1D25" masterDocTitle="A new species of Mexicope Hooker, 1985 (Crustacea, Isopoda) — the first record of Acanthaspidiidae Menzies, 1962 from the Mediterranean Sea" masterLastPageNumber="e 121508" masterPageNumber="e 121508" pageNumber="e121508" updateTime="1717541638890" updateUser="ExternalLinkService">
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<mods:title id="C4FEEA419E1EC5FC2E4CF89730B6539C">A new species of Mexicope Hooker, 1985 (Crustacea, Isopoda) — the first record of Acanthaspidiidae Menzies, 1962 from the Mediterranean Sea</mods:title>
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<mods:namePart id="EEC25A8239F9DC1882245C8442A570EF">Riehl, Torben</mods:namePart>
<mods:nameIdentifier id="77B263BA4E155966F5BC68B6A2DE2927" type="ORCID">0000-0002-7363-4421</mods:nameIdentifier>
<mods:affiliation id="6DE3575531225BEDE8152781C4EC1E3A">Senckenberg Gesellschaft für Naturforschung, Frankfurt, Germany &amp; Senckenberg Research Institute and Natural History Museum, Frankfurt am Main, Germany &amp; Johann Wolfgang Goethe University Frankfurt, Frankfurt am Main, Germany</mods:affiliation>
</mods:name>
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<mods:namePart id="9E3014428598A4B2527EC0695DC431E1">Schienbein, Katharina Ellen</mods:namePart>
<mods:affiliation id="33BAB0E5C7DB263952CAAE1644FBBB5E">Johann Wolfgang Goethe University Frankfurt, Department of Biological Sciences, Institute of Ecology, Evolution and Diversity, Frankfurt am Main, Germany</mods:affiliation>
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<mods:namePart id="BB157EA0F019A681FC408F4761B6A32E">Mifsud, Constantine</mods:namePart>
<mods:nameIdentifier id="87115FB5E0E2232833EFF0343C2E0A31" type="ORCID">https://orcid.org/0009-0009-1318-9416</mods:nameIdentifier>
<mods:affiliation id="B820171AEC567818F6432B27F96002C6">5 Triq ir-Rghajja, Rabat, Malta</mods:affiliation>
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<mods:date id="9ED2172B034A70BD3B412EDF3AE3CE41">2024</mods:date>
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<treatment id="A64CDA30322C57E0B756170F03C53113" ID-DOI="http://doi.org/10.5281/zenodo.11238305" ID-Zenodo-Dep="11238305" ID-arpha="A64CDA30-322C-57E0-B756-170F03C53113" ID-zoobank="049ED44F-A900-47AE-A386-0126ACF7061A" LSID="urn:lsid:zoobank.org:act:049ED44F-A900-47AE-A386-0126ACF7061A" LSID-ZBK="urn:lsid:zoobank.org:act:049ED44F-A900-47AE-A386-0126ACF7061A" httpUri="http://treatment.plazi.org/id/A64CDA30322C57E0B756170F03C53113">
<subSubSection id="1F2E8B9ED8CAC20F776D60BB912F6AF0" type="nomenclature">
<paragraph id="E47C1233D9FAAD865CE083F81A27598C">
<taxonomicName id="C5CF5B610E3ED557F0D26B37D9F9B5DE" ID-CoL="CG3MF" authority="Riehl &amp; Schienbein" authorityName="Riehl &amp; Schienbein &amp; Mifsud" authorityYear="2024" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis" status="sp. nov.">
<emphasis id="AE835E4F1D545D9A0DAB1F1863504D18" italics="true">Mexicope maletensis</emphasis>
Riehl &amp; Schienbein
</taxonomicName>
<taxonomicNameLabel id="D57B6B1725C065A99D42C12238F1CC05" rank="species">sp. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="3B6EE853EBD179BF4A025FDBF8C5BF55" type="materials">
<paragraph id="C6F6688FFC5912B44C64B358D012FBED">
<heading id="8EC4AD645B9F9EC52CC795854F5B77AE" reason="title">Materials</heading>
</paragraph>
<paragraph id="979152B4AF5DB7850D8A7C57CEECB122">
<materialsCitation id="5AD843E1AFEBA193553E704295F86B4A" collectingDate="2017-06-07" collectingMethod="custom-built rectangular dredge, 1 m wide, 20 cm high and with 500 µm mesh size" determinerName="torben riehl, katharina e. schienbein" latitude="35.933567" location="off Ġnejna Bay" longitude="14.322083" matCitId="58a3b6cc-79d2-5622-b2fa-a132124bdce7" originalDetermination="mexicope maletensis riehl and schienbein" specimenCode="smf 62000" specimenCount="1" specimenCount-male="1" typeStatus="holotype">
<list id="0C946FA6F29A71C62B86ED87EF2605C1" list-content="occurrences" list-type="alpha-lower">
<emphasis id="3458D59714205D8500566220EC312B26" bold="true">Type status:</emphasis>
<typeStatus id="4945194486A55B3990DA04A2F46158E8" type="holotype">Holotype</typeStatus>
. 
<emphasis id="9AD23FD6BAC5455D1C10891F74FE5E4C" bold="true">Occurrence:</emphasis>
catalogNumber: 
<specimenCode id="6D7B227EAE63C4AA7BEAAFC826800DDB">SMF 62000</specimenCode>
; individualCount: 1; sex: male; lifeStage: adult; preparations: 
<named-content id="F20F4554CE0EC98867C1781DDD070892" content-type="dwc:preparations" xlink_type="simple">whole animal (ETOH)</named-content>
; occurrenceID: 
<matCitId id="CDB2E0F502D63B2FF3CCF53EF53FB0FE">
<uuid id="82C3A8E08174B12AF6F9A5D0DEE0D6EE">58A3B6CC-79D2-5622-B2FA-A132124BDCE7</uuid>
</matCitId>
; 
<emphasis id="4CA0660BD6DC6E51254CFD92CEC4E84E" bold="true">Taxon:</emphasis>
scientificName: 
<taxonomicName id="7BCD4B89DFD78157A0ED7C81A622017F" authority="Riehl and Schienbein" authorityName="Riehl and Schienbein" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis">
<originalDetermination id="0DC233B5959A941D40FDA76291BAEE47">
<emphasis id="19EDCE93EF0B298BCA7F1D59DEA2408E" italics="true">Mexicope maletensis</emphasis>
Riehl and Schienbein
</originalDetermination>
</taxonomicName>
; phylum: Arthropoda; class: 
<taxonomicName id="879688AD56B8CEA57092C7103E763FBD" class="Malacostraca" kingdom="Animalia" phylum="Arthropoda" rank="class">Malacostraca</taxonomicName>
; order: 
<taxonomicName id="88EB0DE3A03A6F6BC97CF940C4B700F1" authorityName="Latreille" authorityYear="1816" class="Malacostraca" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="order">Isopoda</taxonomicName>
; family: 
<taxonomicName id="D10F6A6E97C36E0A9A70E33EFFCF7895" class="Malacostraca" family="Acanthaspidiidae" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="family">Acanthaspidiidae</taxonomicName>
; genus: 
<taxonomicName id="61541E1B1227D0B4116DBAD6FCDAA2BD" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="78E7FD3BA5DD0A52FC64374990359E31" italics="true">Mexicope</emphasis>
</taxonomicName>
; specificEpithet: 
<taxonomicName id="A14F01E80099F3B7B0601510DAAE84BE" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis">
<named-content id="B576CD9080B04020CDB26BE1AF29B535" content-type="dwc:specificEpithet" xlink_type="simple">
<emphasis id="ECF81751E9FC94A19DE5BA51660158B0" italics="true">maletensis</emphasis>
</named-content>
</taxonomicName>
; scientificNameAuthorship: 
<named-content id="54A869569825CC81831EDBE3D088F461" content-type="dwc:scientificNameAuthorship" xlink_type="simple">Riehl &amp; Schienbein</named-content>
; nomenclaturalCode: 
<named-content id="89BB3065FBC8C2D3D42E5BDC0FDDE1F1" content-type="dwc:nomenclaturalCode" xlink_type="simple">ICZN</named-content>
; 
<emphasis id="4CE1484A4281D2730D6D12F515B969F6" bold="true">Location:</emphasis>
higherGeography: 
<named-content id="6F0DF120280E928FD46FC9347A329538" content-type="dwc:higherGeography" xlink_type="simple">Mediterranean</named-content>
; islandGroup: 
<named-content id="3412CF4E60BF76DA7EA9AB868DC247BC" content-type="dwc:islandGroup" xlink_type="simple">Maltese shelf</named-content>
; locality: 
<location id="EFA641D830B31A6F80E6726684300931" LSID="urn:lsid:plazi:treatment:A64CDA30322C57E0B756170F03C53113:EFA641D830B31A6F80E6726684300931">off Ġnejna Bay</location>
; verbatimDepth: 
<named-content id="28B2239D303BBCD3513D068A52DB55BD" content-type="dwc:verbatimDepth" xlink_type="simple">120 m</named-content>
; verbatimLatitude: 
<geoCoordinate id="0CB1621CB5CEDD5D4440DCA216F0D9CA" degrees="35" direction="north" minutes="56.014" orientation="latitude" precision="1" value="35.933567">35 ° 56.014 ' N</geoCoordinate>
; verbatimLongitude: 
<geoCoordinate id="2801A1CD1D1877B13EC1158E0482DFBA" degrees="14" direction="east" minutes="19.325" orientation="longitude" precision="1" value="14.322083">14 ° 19.325 ' E</geoCoordinate>
; decimalLatitude: 
<named-content id="0F8589DBD4301427CFD958E4C57F04BB" content-type="dwc:decimalLatitude" xlink_type="simple">35.93356667</named-content>
; decimalLongitude: 
<named-content id="EC4AF6085F7F31D089CA3715365727CB" content-type="dwc:decimalLongitude" xlink_type="simple">14.32208333</named-content>
; 
<emphasis id="999EF76D3D2641ABE7A024694CB3A7FC" bold="true">Identification:</emphasis>
identifiedBy: 
<determinerName id="B36928DE6D70093F9EB8E2017311CB80">Torben Riehl, Katharina E. Schienbein</determinerName>
; 
<emphasis id="C60B14717C6F48B03013EB7C9B0C8BE2" bold="true">Event:</emphasis>
samplingProtocol: 
<collectingMethod id="E0E629FBE8263A65CAB3D389DD137841">custom-built rectangular dredge, 1 m wide, 20 cm high and with 500 µm mesh size</collectingMethod>
; eventDate: 
<collectingDate id="47CA87AA2A65B9AC507093E6609A7773">
<date id="26086AF23486A5DE821E529D863F335A" value="2017-06-07">07-06 - 2017</date>
</collectingDate>
; 
<emphasis id="291149C87B37B3D8733204B534AED412" bold="true">Record Level:</emphasis>
institutionCode: SMF; basisOfRecord: 
<named-content id="A48EBF49301D830E1D163630B7155A19" content-type="dwc:basisOfRecord" xlink_type="simple">PreservedSpecimen</named-content>
</list>
</materialsCitation>
</paragraph>
</subSubSection>
<subSubSection id="4D7E56370D0E814911ABACDE759B409E" type="Description">
<paragraph id="2C4FC4FA65F8D9500F69E6E12A83EC94">
<heading id="1EABC3F0EE5FFE606CB1F5E000DBBB14" reason="title">Description</heading>
</paragraph>
<paragraph id="CC04258DE0451D0BC22B734668A7D0AE">
<emphasis id="CDE47C2FA7C3427A01A5B4D56E25A2FF" bold="true">Body</emphasis>
(Fig. 
<figureCitation id="2B2AE71073DD89BD45F3CA8E223D819D" captionStart="Figure 2" captionStartId="F11189731" captionText="Figure 2. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of habitus: A habitus lateral; B habitus dorsal; Scale bar = 1 mm." figureDoi="10.3897/BDJ.12.e121508.figure2" httpUri="https://binary.pensoft.net/fig/985841">2</figureCitation>
, Suppl. material 
<xref id="857A3BCE6E7C18D2367B9E731B25C075" ref-type="supplementary-material" rid="S11315092">2</xref>
) elongate; cuticular ornamentation small, rounded; lateral projections spine-like; length 
<quantity id="75ABC78C0C91ADF3546AD3DF3D9446F1" metricMagnitude="-3" metricUnit="m" metricValue="2.5" unit="mm" value="2.5">2.5 mm</quantity>
; width 0.4 length; lateral margins subparallel, notched in Prn 3 and 4, spiny, pereonite 1 widest; tergites covered with scattered simple setae; relative widths of body segments: Ceph &lt;Prn 1&gt; Prn 2&gt; Prn 3&gt; Prn 4 &lt;Prn 5&gt; Prn 6&gt; Prn 7&gt; Plt (Table 
<tableCitation id="041181B6F8902268D9A08CB047D0BDE8" captionStart="Table 2" captionStartId="T11189749" captionText="Table 2. Mexicope maletensis sp. nov. male holotype (SMF 62000) relative pereonite lengths. L = length; L / W = length-width ratio." httpUri="http://table.plazi.org/id/D35D6B5AC4239C53C7B384C6C1709546" tableUuid="D35D6B5AC4239C53C7B384C6C1709546">2</tableCitation>
). 
<emphasis id="2E4373E2A975262F28797BF767E23ACE" bold="true">Ceph</emphasis>
(Figs. 3–4) length 0.44 width, 0.16 body length; frontal margin rounded; frons anterior margin rounded-triangular, projecting. Eyestalks present, width 0.60 length, ocelli present. Rostrum length 0.10 Ceph length.
</paragraph>
<paragraph id="F26ACD7C277801D1FF52CC4125FF7D6F">
<emphasis id="EA7E276F24B3799F715263FDA01664F7" bold="true">Prn</emphasis>
(Fig. 
<figureCitation id="E2E2353F5DDE64AECF679A6F9E47462E" captionStart="Figure 2" captionStartId="F11189731" captionText="Figure 2. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of habitus: A habitus lateral; B habitus dorsal; Scale bar = 1 mm." figureDoi="10.3897/BDJ.12.e121508.figure2" httpUri="https://binary.pensoft.net/fig/985841">2</figureCitation>
) tergites medially with 2–4 conspicuous long setae; sternites each with 1 spine. 
<emphasis id="65F7EE74203742FD4EDEF1BE9DA5D3D7" bold="true">Prn 1</emphasis>
length 0.21 width, 0.09 body length; lateral projection single, prominent, projection length 2.0 Prn 2 projection length; anterolateral margin smooth; posterolateral margin serrated. 
<emphasis id="BFC32D23020EE06EE2A27187CFD0316C" bold="true">Prn 2</emphasis>
length 0.23 width, 0.09 body length; lateral projection single, anterolateral margin smooth, posterolateral margin serrated. 
<emphasis id="7532D889E42BF9676BD7A173820FE2EF" bold="true">Prn 3 and 4</emphasis>
subsimilar, length 0.20 and 0.21 width, respectively, 0.08 body length; lateral projections bifid, anterolateral and posterolateral margins serrated. 
<emphasis id="70EE0BC3BE0FB940D97D944D6CCFE8AF" bold="true">Prn 5</emphasis>
length 0.15 width, 0.06 body length. 
<emphasis id="F29FCC333232A3094287AD2DF2ACFCFE" bold="true">Prn 6</emphasis>
length 0.23 width, 0.09 body length. 
<emphasis id="4D2DA796101E5DA38248F057154E76BF" bold="true">Prn 7</emphasis>
length 0.20 width, 0.07 body length; 
<emphasis id="093780991E2ED162DE59C5B9183A5E6B" bold="true">Prn 5-7</emphasis>
lateral projections single, anterolateral margins serrated, posterolateral margins smooth.
</paragraph>
<paragraph id="FEBB75DAEF61D0C6FF34AC7C1E67E153">
<emphasis id="F2B3E38EA50FA240139A8A61EB34CC7F" bold="true">Plt</emphasis>
(Fig. 
<figureCitation id="E2C18646A0F19E0AE3F1E40F288FB4D6" captionStart="Figure 2" captionStartId="F11189731" captionText="Figure 2. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of habitus: A habitus lateral; B habitus dorsal; Scale bar = 1 mm." figureDoi="10.3897/BDJ.12.e121508.figure2" httpUri="https://binary.pensoft.net/fig/985841">2</figureCitation>
) length 1.1 width, 0.33 body length; proximal quarter narrow, lateral margins in proximal quarter convex, increasingly wide towards posterior, lateral margins posterior quarter narrowing, lateral margins convex; posterolateral margin concave at Urp insertion; posterior apex protruding, convex, width 0.23 Plt width, length 0.44 Urp protopod length; lateral margins with 4 spine-like setae; surface and margins with simple setae.
</paragraph>
<paragraph id="ED13DECD08C6F840E603213E9D4C769D">
<emphasis id="C8094CD0F4DAAF23130945B1243B8BA8" bold="true">
<collectionCode id="F36F61D53030D6DE2918B538EF8D2281">AI</collectionCode>
</emphasis>
(Fig. 
<figureCitation id="79EAE16CE7B1960268FC73626E3E5487" captionStart="Figure 3" captionStartId="F11189733" captionText="Figure 3. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of antennula and antenna: A antenna; B antennula, in situ. Scale bar = 0.5 mm." figureDoi="10.3897/BDJ.12.e121508.figure3" httpUri="https://binary.pensoft.net/fig/985842">3</figureCitation>
B) length 0.20 body length, peduncular articles 1–2 elongated, article 3 cylindrical. Article 1 length 2.4 width, distally with 1 simple seta; article 2 length 4 width, 1.2 article 1 length, distally with 1 broom seta, 2 setae, broken, missing; article 3 length 1.0 width, 0.2 article 2 length; flagellum with 5 progressively narrower articles, length of articles 1 &lt;2&gt; 3&gt; 4&gt; 5 (Table 
<tableCitation id="A13995DC22B2D7AF596C5649F3F6D24C" captionStart="Table 3" captionStartId="T11189750" captionText="Table 3. Mexicope maletensis sp. nov. male holotype (SMF 62000) antennula relative article lengths. L = length; L / W = length-width ratio." httpUri="http://table.plazi.org/id/B40BA044BA43044324E8C61773215A4F" tableUuid="B40BA044BA43044324E8C61773215A4F">3</tableCitation>
); terminal article distally with 1 simple, long seta, 3 aesthetascs, 3 setae, broken, missing.
</paragraph>
<paragraph id="2C4C6D7F7DB24CDF6D28725492B6FF77">
<emphasis id="BE07E51BD6D2B11609769F543C275CF0" bold="true">
<collectionCode id="D0528FA3FBBBD5E09BB97E41AFDC4F3B">AII</collectionCode>
</emphasis>
(Fig. 
<figureCitation id="9CCD516B0FA006C192D83287C4541C9A" captionStart="Figure 3" captionStartId="F11189733" captionText="Figure 3. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of antennula and antenna: A antenna; B antennula, in situ. Scale bar = 0.5 mm." figureDoi="10.3897/BDJ.12.e121508.figure3" httpUri="https://binary.pensoft.net/fig/985842">3</figureCitation>
A) length 0.80 body length. Article 4 distally with 5 simple setae. Article 5 longer than proximal 4 articles together, dorsal margin with 4 simple, long setae, ventral margin distally with 1 simple seta, 1 seta broken, missing. Article 6 length 1.1 article 5 length, with 19 long, simple setae, 3 broom setae. Flagellum with 12–13 articles; first article as long as carpus (peduncular article 6), length 1.4 joint length of flagellum articles 2–12, rich in aesthetascs. Aesthetascs narrow, tubular.
</paragraph>
<paragraph id="6665D59CE649355C5A030ED7D40ED642">
<emphasis id="385BC7B19FF13CCAD1BB9167578C8993" bold="true">Md</emphasis>
(Fig. 
<figureCitation id="234B2267BDD5AAAF2BCAA82ADF9C51F0" captionStart="Figure 4" captionStartId="F11189735" captionText="Figure 4. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of mouthparts: A left and right mandibles left maxilliped, dorsal aspect; B maxillula; C maxilla; D right mandible; E right maxilliped, ventral aspect. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure4" httpUri="https://binary.pensoft.net/fig/985843">4</figureCitation>
C and D) slender, length 0.20 width, incisor of left and right Md with 5 cusps. 
<tp_taxon-name id="BC3DFA46DCF7FABD439F4E06D3814571">
<emphasis id="0C3A96C2B9B0DFD59F460F5AA837447A" italics="true">
<tp_taxon-name-part id="ADBC1C8B6E946BA07791C5B64495A91B" reg="Lacinia" taxon-name-part-type="genus">Lacinia</tp_taxon-name-part>
<tp_taxon-name-part id="44B692B5B2EB481DB0D0A695AF9C4228" reg="mobilis" taxon-name-part-type="species">mobilis</tp_taxon-name-part>
</emphasis>
</tp_taxon-name>
with 4 cusps. Spine row of left and right Md with 6 denticulate spine-like setae, progressively increasing in length and number of denticles from distal to proximal end of spine row. 
<emphasis id="BD911AC5625442B210CE969A09B9B883" italics="true">Pars molaris</emphasis>
slender, with 4 simple setae on left and 3 simple setae on right Md; palp absent. 
<emphasis id="63A738046D829B62A1F99940127DBFBC" bold="true">
<collectionCode id="4B8D517F38249ACC54B007ACF2EB871C">MxI</collectionCode>
</emphasis>
(Fig. 
<figureCitation id="27FC0015A6F79F295880A624C45F260A" captionStart="Figure 4" captionStartId="F11189735" captionText="Figure 4. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of mouthparts: A left and right mandibles left maxilliped, dorsal aspect; B maxillula; C maxilla; D right mandible; E right maxilliped, ventral aspect. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure4" httpUri="https://binary.pensoft.net/fig/985843">4</figureCitation>
F) exopod length 5.7 width; margin with row of 12 simple setae, apex obliquely truncate, with 15 spine-like setae; endopod length 0.83 exopod length, length 8.3 width, medial margin with a row of 8 long, simple setae, apex narrow, with 1 serrated, spine-like and 2 simple, spine-like seta. 
<emphasis id="D747F049F72913246C431274D81DBA6C" bold="true">
<collectionCode id="D2874ACD6C5408746DA65C28DC2A0E44">MxII</collectionCode>
</emphasis>
(Fig. 
<figureCitation id="F5A88AA8C6327F15AE57F209CBC5A127" captionStart="Figure 4" captionStartId="F11189735" captionText="Figure 4. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of mouthparts: A left and right mandibles left maxilliped, dorsal aspect; B maxillula; C maxilla; D right mandible; E right maxilliped, ventral aspect. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure4" httpUri="https://binary.pensoft.net/fig/985843">4</figureCitation>
E) both parts of exopod laterally flexed, exopod length 1.1 endopod length, lateral part slightly longer than mesial part; lateral part apex with 1 long, serrated and 3 simple, spine-like setae; mesial part apex with 3 long, serrated spine-like and 1 simple, spine-like setae; endopod slightly wider than mesial and lateral part of exopod, densely covered with long, simple setae, apically with 3 serrated, spine-like setae.
</paragraph>
<paragraph id="FD51404E5680E2DDD75AB35A5334972E">
<emphasis id="0D578BE76BC56C6836D941966033E49B" bold="true">Mxp</emphasis>
(Fig. 
<figureCitation id="A15F2A0CA1EEAFC97E2F969B842FEFB5" captionStart="Figure 4" captionStartId="F11189735" captionText="Figure 4. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of mouthparts: A left and right mandibles left maxilliped, dorsal aspect; B maxillula; C maxilla; D right mandible; E right maxilliped, ventral aspect. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure4" httpUri="https://binary.pensoft.net/fig/985843">4</figureCitation>
A, B and Fig. 
<figureCitation id="CAFE97165F849E36202436AADE0956DB" captionStart="Figure 5" captionStartId="F11189737" captionText="Figure 5. Mexicope maletensis sp. nov. male holotype (SMF 62000), confocal laser scanning microscopy (cLSM) images of mouthparts: A left maxilliped, dorsal aspect; B right maxilliped, ventral aspect; A left mandible; B right mandible; C maxilla; D maxillula. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure5" httpUri="https://binary.pensoft.net/fig/985844">5</figureCitation>
) length 0.21 body length; basis and endite wide, basis length (excluding endite) 1.5 width, asetose, 2 
<emphasis id="859395FDA23DFF8295D48ADE8E5DAD38" italics="true">receptaculi</emphasis>
; endite ventrally densely covered with simple setae, distal margin ventrally with 2 unequally bifid spine-like setae and 1 equally bifid spine-like seta; epipodite short, reaching half way to palp articulation, acute apex, asetose, length 0.56 maxilliped length, 2.6 width; palp with 5 articles, length 0.52 maxilliped length, articles progressively narrower, merus with 2, carpus with 2, propodus with 4, dactylus with 5 sensillae.
</paragraph>
<paragraph id="33527F96BDCD11288F022FBA3AC0E098">
<emphasis id="708BAA5EF545E8FE5D2950D340A5CB3C" bold="true">P</emphasis>
(Figs 
<figureCitation id="2310BF8109917FFFC76FEEE4D49D2382" captionStart="Figure 6" captionStartId="F11189739" captionText="Figure 6. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of anterior pereopods in lateral view: A pereopod I; B pereopod II; C pereopod III. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure6" httpUri="https://binary.pensoft.net/fig/985845">6</figureCitation>
, 
<figureCitation id="292B9852FB17444FD2ACCB4C1C9D019C" captionStart="Figure 7" captionStartId="F11189741" captionText="Figure 7. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of posterior pereopods in lateral view: A pereopod IV; B pereopod V; C pereopod VI. Scale bar 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure7" httpUri="https://binary.pensoft.net/fig/985846">7</figureCitation>
, 
<figureCitation id="B88D134FD1C433B658D2264F477720D3" captionStart="Figure 8" captionStartId="F11189743" captionText="Figure 8. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of seventh pereopods in lateral view: A right pereopod VII; B left pereopod VII; C simple (asetulate) seta; D whip seta; E robust seta; F unequally bifid (sensillate) seta; G broom seta (distal half of shaft setulate, pappose); H broom seta (apically setulate, pappose); I simple sensilla (shaft subcylindrical, tip rounded); J fringed sensilla (shaft subcylindrical, distally densely covered by small scales, tip rounded). Scale bar (A – B) = 250 µm (C – I not to scale)." figureDoi="10.3897/BDJ.12.e121508.figure8" httpUri="https://binary.pensoft.net/fig/985847">8</figureCitation>
) uniformly baculiform, ambulatory legs, length PI &lt;II&gt; III &lt;IV &lt;V &lt;VI&gt; VII, PII length 0.60 body length, PVI length 0.70 body length; carpi and propodi similarly long, ventral margins distodorsally with row of 1–4 robust 
<collectionCode id="267B36E204030612496ECD797973859E" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae; propodi distodorsally with 1 unequally bifid, spine-like seta; dactyli with 1 fringed sensilla between claws, distodorsal claw about half as long as dactylus, slender and acute, curved ventrally, distoventral claw length 0.80 distodorsal claw length or shorter.
</paragraph>
<paragraph id="7621F310B236F9AD1BFF633C7059BC24">
<emphasis id="998EE2ACCD3E8CC54D150D94CCF913F0" bold="true">PI</emphasis>
(Fig. 
<figureCitation id="3A7ACAF11209511E6D9402C506481C69" captionStart="Figure 6" captionStartId="F11189739" captionText="Figure 6. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of anterior pereopods in lateral view: A pereopod I; B pereopod II; C pereopod III. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure6" httpUri="https://binary.pensoft.net/fig/985845">6</figureCitation>
A) basis proximally with 1 submarginal whip seta; ischium dorsal margin with 2 whip setae, ventral margin with 1 whip seta; merus dorsal margin with 1 simple seta, ventral margin with 2 whip setae, mediodorsally with 1 simple seta; carpus dorsal margin medially with 1 whip seta, distally with 2 whip setae; ventral margin with 6 setae: 3 simple, 2 robust 
<collectionCode id="8917D2A3D578DB1ADC54C23F1822BF39" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae, 1 seta broken, missing; ventrally-submarginally with 2 simple setae; propodus dorsal margin medially with 1 robust 
<collectionCode id="EA7CCB07EC5574FACEB28AA24864699D" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta, distally with batch of 1 broom seta and 2 whip setae; ventral margin with 3 robust 
<collectionCode id="98358E5D190224985302D2524331F27B" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae and 1 whip seta; ventrally submarginally medially and laterally with, respectively, 1 simple seta, distolaterally with 1 simple seta; dactylus with 2 whip setae distodorsally.
</paragraph>
<paragraph id="08D6C33C1913D0FDC008C0F888B8AEF1">
<emphasis id="AEE22CF5F57A4B35C19077180A79262F" bold="true">PII</emphasis>
(Fig. 
<figureCitation id="042ECFA27D09AE2872C3648DDC1B0A94" captionStart="Figure 6" captionStartId="F11189739" captionText="Figure 6. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of anterior pereopods in lateral view: A pereopod I; B pereopod II; C pereopod III. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure6" httpUri="https://binary.pensoft.net/fig/985845">6</figureCitation>
B) basis dorsal margin proximally with 1 broom seta; distoventrally with 1 whip seta; ischium dorsal margin with 1 seta, broken; ventral margin with 2 whip setae; distal margin anteriorly and posteriorly respectively with 1 simple seta; merus dorsal margin proximally with 1 whip seta, distally with 2 whip setae; ventral margin with 2 whip setae; distally submarginally with 1 simple seta; carpus dorsal margin with 4 setae: 3 whip setae, 1 broom seta; distally submarginally with 2 simple setae, laterally and medially, respectively; ventral margin with 3 setae: 1 whip, 2 
<collectionCode id="4FA2CED405ED5DA549A94287B2004480" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
; propodus dorsal margin with 5 whip setae; ventral margin medially with 3 
<collectionCode id="05BD16DDF40D7432516B9448B25CD4A0" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae, distally with 2 whip setae; distally submarginally with 1 whip seta; dactylus dorsally subdistally with 3 whip setae, ventrally submarginally with 1 whip seta.
</paragraph>
<paragraph id="00F1E1C8B8309692516C3A295A4DC3D1">
<emphasis id="5163733052242B1D86825C02CC90285C" bold="true">PIII</emphasis>
(Fig. 
<figureCitation id="5BF134982972FA9EB02A40D9BC1DAB39" captionStart="Figure 6" captionStartId="F11189739" captionText="Figure 6. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of anterior pereopods in lateral view: A pereopod I; B pereopod II; C pereopod III. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure6" httpUri="https://binary.pensoft.net/fig/985845">6</figureCitation>
C) basis dorsal margin with 1 whip seta and 1 broom seta; ventral margin with 3 simple setae; ischium dorsal margin with 1 simple seta, distal margin anteriorly and posteriorly, respectively, with 1 whip seta; ventral margin with 2 whip setae; merus dorsal margin distally with 1 simple seta; ventral margin distally with 1 simple seta; distal margin posteriorly with 1 whip seta; carpus dorsal margin distally with 1 broom seta; ventral margin medially with 1 whip seta, 1 robust 
<collectionCode id="505CFEA4E00CB7B45D007BAE64A464FF" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta, distal margin anteriorly and posteriorly, respectively, with 1 whip seta; medially submarginally with 2 simple setae, anteriorly and posteriorly, respectively; propodus dorsal margin medially with 1 seta, broken, missing, distally with 1 simple seta; ventral margin medially with 1 robust 
<collectionCode id="9BA84C487F534A5D0C83F2CA5E380D62" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta, distally with 1 robust 
<collectionCode id="4D6B204893675FBC1DB3B98F08CCB591" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
, 1 whip seta; dactylus dorsal margin with 4 whip setae; distally anteriorly with 2 setae, broken, missing.
</paragraph>
<paragraph id="80F7B8E67A50A2A969537B9DCA24D077">
<emphasis id="0FB5FC1447F6546A0107313A9C21B868" bold="true">PIV</emphasis>
(Fig. 
<figureCitation id="00F9046434DE5D387EF82122C80574A5" captionStart="Figure 7" captionStartId="F11189741" captionText="Figure 7. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of posterior pereopods in lateral view: A pereopod IV; B pereopod V; C pereopod VI. Scale bar 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure7" httpUri="https://binary.pensoft.net/fig/985846">7</figureCitation>
A) basis proximodorsally with 1 simple seta, distoventrally with 1 simple seta; ischium dorsally with 2 simple setae submarginally; merus distodorsally with 2 simple setae; ventral margin proximally with 1 simple seta, distally with simple setae; carpus dorsal margin medially with 1 simple seta, distally with 2 simple setae, 1 broom seta, 1 seta, broken, missing; ventral margin medially with 1 simple seta, 2 robust 
<collectionCode id="81E0A2FA1D81B01FE70941165B943F56" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae; distal margin with 3 simple setae; propodus dorsal margin with 1 whip, 1 robust 
<collectionCode id="78767B188EC315602FE70B0FD673C8F0" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
, 1 broom seta; ventral margin with 3 robust 
<collectionCode id="2657D49972199E129AEE76867F9970BC" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae; dactylus dorsal margin with row of 3 simple setae and 1 
<collectionCode id="628F5B2F80353FF4DCC7137FEB2CE570" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta, distally with 1 whip seta.
</paragraph>
<paragraph id="DA5ABEEA181E04EEF26475BFBC9768C9">
<emphasis id="9CD8805D6EEE95F519D0DB9C88EA0FCC" bold="true">PV</emphasis>
(Fig. 
<figureCitation id="7216BEC35DA3E9FD628B0935350EF034" captionStart="Figure 7" captionStartId="F11189741" captionText="Figure 7. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of posterior pereopods in lateral view: A pereopod IV; B pereopod V; C pereopod VI. Scale bar 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure7" httpUri="https://binary.pensoft.net/fig/985846">7</figureCitation>
B) basis dorsal margin with 1 broom seta, 2 setae, broken, missing; ventral margin with 3 whip setae, distal margin with 1 simple seta; ischium dorsal and ventral margins with 2 whip setae, respectively; distal margin with 2 whip setae; merus dorsal margin distally with 1 whip seta, submarginally medially with 1 seta, broken, missing and 1 simple seta, distally with 1 simple seta; ventral margin proximally with 1 simple seta, distally with 1 whip seta and 1 simple seta; carpus dorsal margin medially with 2 whip setae, distally with 2 whip setae and 1 broom seta; ventral margin with 1 robust seta and 3 robust 
<collectionCode id="30386E82189B6BB2DD4D342E7825D520" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae; distal margin posteriorly with 1 simple seta; propodus dorsal margin with 1 robust 
<collectionCode id="3668E67C1AD72D2037CB4014CCF34FF2" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta, 5 simple setae and 1 broken seta; ventral margin proximally with 1 seta, broken, missing, 3 
<collectionCode id="229CED3CDAFA192DCB43123AC966FFC1" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae, submarginally with 3 whip setae; dactylus distally with 5 whip setae.
</paragraph>
<paragraph id="E37BB641707EC81EB4759BAD18D983E7">
<emphasis id="D77B674188DF6C8A84B9DACD9BC99B2D" bold="true">PVI</emphasis>
(Fig. 
<figureCitation id="4BDB272D9843489971DB8558268F405B" captionStart="Figure 7" captionStartId="F11189741" captionText="Figure 7. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of posterior pereopods in lateral view: A pereopod IV; B pereopod V; C pereopod VI. Scale bar 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure7" httpUri="https://binary.pensoft.net/fig/985846">7</figureCitation>
C) basis dorsal margin proximally with 4 short whip setae, medially with 1 seta, broken, missing, distally with 2 robust whip setae; ventral margin distally with 1 whip seta; distal margin anteriorly with 1 whip seta; ischium dorsal margin proximally and distally with 1 simple seta, respectively; ventral margin with 3 whip setae; distal margin with 1 short whip seta anteriorly and posteriorly, respectively; merus dorsal margin distally with 1 long whip seta, medially submarginally with 1 simple seta; ventral margin proximally with 1 whip seta, distally with 1 simple seta, medially submarginally with 1 simple seta; distal margin with 1 whip seta anteriorly and 1 
<collectionCode id="8FD83692D78766B7DC6777940459327E" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta posteriorly; carpus dorsal margin medially with 2 broken setae, missing and 1 whip seta, distally with 3 whip setae and 1 broom seta; ventral margin with 4 robust 
<collectionCode id="7054BF80A745FA39457D6194079C6F25" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae, submarginally with 2 short whip setae; distal margin posteriorly with 1 simple seta; propodus dorsal margin with 3 simple setae, 2 long simple setae, 1 broom seta, 2 broken setae (missing), mesially with 4 simple setae, distodorsally with 1 robust 
<collectionCode id="8898E27AE4D7BFE9C7DAB62CB43BE4BA" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta, 1 broom seta; ventral margin with 1 simple seta, 4 robust 
<collectionCode id="F9F13ACE893E269EEB5968DCB65561D9" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae, dactylus distally with 5 whip setae.
</paragraph>
<paragraph id="B732658BC73A0C5E4CF8CFD02063CED6">
<emphasis id="757008F352CE97393E3AFB0D9249C667" bold="true">PVII</emphasis>
(Fig. 
<figureCitation id="1456392945591D05D6EB1FE419FAF746" captionStart="Figure 8" captionStartId="F11189743" captionText="Figure 8. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of seventh pereopods in lateral view: A right pereopod VII; B left pereopod VII; C simple (asetulate) seta; D whip seta; E robust seta; F unequally bifid (sensillate) seta; G broom seta (distal half of shaft setulate, pappose); H broom seta (apically setulate, pappose); I simple sensilla (shaft subcylindrical, tip rounded); J fringed sensilla (shaft subcylindrical, distally densely covered by small scales, tip rounded). Scale bar (A – B) = 250 µm (C – I not to scale)." figureDoi="10.3897/BDJ.12.e121508.figure8" httpUri="https://binary.pensoft.net/fig/985847">8</figureCitation>
A and B) basis distodorsally with 1 short whip seta; proximoventrally with 1 simple seta and distoventrally with 1 short whip seta; ischium dorsal margin with 3 whip setae, submarginally with 1 short simple seta; ventral margin with 2 simple setae; merus dorsal margin medially with 1 short whip seta, distally with 1 long simple seta; ventral margin proximally with 1 whip seta, medially submarginally with 1 simple seta, distally with 2 long whip setae; distal margin anteriorly with 1 whip seta; carpus dorsal margin with medially with 2 whip setae, distally with 1 broom seta, 2 simple setae, 1 
<collectionCode id="472C362E31B9171A371FD5ECCB7D8C9C" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta, 2 broken setae (missing), ventral margin with 4 robust 
<collectionCode id="BFD4C19D3495EB6949A1701B6F4A54FC" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae, submarginally with 3 whip setae; propodus dorsal margin medially with 2 broken setae (missing), distally with 4 long whip setae and 1 broom seta, on right PVII with 1 
<collectionCode id="78EFEA16F20D242A455401BD23946E9D" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
seta; ventral margin with 4 robust 
<collectionCode id="9C7CF509F116CEDDA687076702892930" country="France" name="Laboratoire de Biostratigraphie">UB</collectionCode>
setae, submarginally with 5 whip setae; dactylus distally with 5 whip setae.
</paragraph>
<paragraph id="E5A1D707A04C667CD9E491ECAE43901F">
<emphasis id="5592D42668A1636EBAEA7BFA91B6070D" bold="true">PlpI</emphasis>
(Fig. 
<figureCitation id="39691BA55741437F1D5CEB7310EE0FD3" captionStart="Figure 9" captionStartId="F11189745" captionText="Figure 9. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings pleopods: A pleotelson in ventral view, uropodal setae omitted; B pleopod I; C pleopods III and IV (underneath); D pleopod II. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure9" httpUri="https://binary.pensoft.net/fig/985848">9</figureCitation>
B, Fig. 
<figureCitation id="B8E025D07F71F4FC17897ABFB984750B" captionStart="Figure 10" captionStartId="F11189747" captionText="Figure 10. Mexicope maletensis sp. nov. male holotype (SMF 62000), confocal laser scanning microscopy (cLSM) images of pleopods: A pleotelson in ventral view; B pleopod I; C pleopod II; D pleopod III and IV. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure10" httpUri="https://binary.pensoft.net/fig/985854">10</figureCitation>
A and B) length 2.1 width, proximally widest, with shallow lateral notch distally of proximal third, progressively narrower from notch to apex; distolateral lobes narrow, pointed and pointing caudolaterally, laterally with 3–4 long, simple setae; distomedial lobes slightly shorter and wider, apex broadly rounded, distal margin with 4 simple setae. 
<emphasis id="33B159592D6F49989F350E2F6A029A55" bold="true">PlpII</emphasis>
(Fig. 
<figureCitation id="C793AEAA0F9CE48CA2765854FD68EC66" captionStart="Figure 9" captionStartId="F11189745" captionText="Figure 9. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings pleopods: A pleotelson in ventral view, uropodal setae omitted; B pleopod I; C pleopods III and IV (underneath); D pleopod II. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure9" httpUri="https://binary.pensoft.net/fig/985848">9</figureCitation>
C and Fig. 
<figureCitation id="5A740CCB66B2AEED935DDA3238A3C7A3" captionStart="Figure 10" captionStartId="F11189747" captionText="Figure 10. Mexicope maletensis sp. nov. male holotype (SMF 62000), confocal laser scanning microscopy (cLSM) images of pleopods: A pleotelson in ventral view; B pleopod I; C pleopod II; D pleopod III and IV. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure10" httpUri="https://binary.pensoft.net/fig/985854">10</figureCitation>
C) length 1.7 width, basis lateral margin mid- 1 / 3 convex, apex narrowly rounded. Lateral margin with row of simple setae, distolateral with row of pappose setae, apex with 2 long, simple setae. Exopod asetose, length approx. 2 width, articulating at approx. 2 / 3 of the length of the basipodite. Endopod inserting at mid-length of basis, stylet longer than body length, distal end whip-like, coiled at least 10 times. 
<emphasis id="474B2EEFA20CE9E69AA418AEFB0E1B88" bold="true">PlpIII</emphasis>
(Fig. 
<figureCitation id="01C3A8E1AC323A3ABEC725983F41315B" captionStart="Figure 9" captionStartId="F11189745" captionText="Figure 9. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings pleopods: A pleotelson in ventral view, uropodal setae omitted; B pleopod I; C pleopods III and IV (underneath); D pleopod II. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure9" httpUri="https://binary.pensoft.net/fig/985848">9</figureCitation>
D and Fig. 
<figureCitation id="1ADAA990D6143754729983F0FF770C25" captionStart="Figure 10" captionStartId="F11189747" captionText="Figure 10. Mexicope maletensis sp. nov. male holotype (SMF 62000), confocal laser scanning microscopy (cLSM) images of pleopods: A pleotelson in ventral view; B pleopod I; C pleopod II; D pleopod III and IV. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure10" httpUri="https://binary.pensoft.net/fig/985854">10</figureCitation>
D) exopod longer than endopod, distal end wide, rounded, lateral and distomesial margin densely setose, apex with 6 plumose setae; endopod distally with 7 plumose setae. 
<emphasis id="A74D26071D01A29CD86925A5800142BC" bold="true">PlpIV</emphasis>
(Fig. 
<figureCitation id="50F7BB47FC73412DA6AEE8DDF66DF7D4" captionStart="Figure 9" captionStartId="F11189745" captionText="Figure 9. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings pleopods: A pleotelson in ventral view, uropodal setae omitted; B pleopod I; C pleopods III and IV (underneath); D pleopod II. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure9" httpUri="https://binary.pensoft.net/fig/985848">9</figureCitation>
D) exopod length and width about 0.5 endopod length and width respectively, asetose.
</paragraph>
<paragraph id="9702C3FA191F68F396B8C030F6E837A2">
<emphasis id="A68A7358F699CEC99F7D547C2E2C8070" bold="true">Urp</emphasis>
(Figs 
<figureCitation id="274A322AF216CA9763913357527B6362" captionStart="Figure 2" captionStartId="F11189731" captionText="Figure 2. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings of habitus: A habitus lateral; B habitus dorsal; Scale bar = 1 mm." figureDoi="10.3897/BDJ.12.e121508.figure2" httpUri="https://binary.pensoft.net/fig/985841">2</figureCitation>
, 
<figureCitation id="C70BA6FAC7497C61B3A92E38D5AB77E1" captionStart="Figure 9" captionStartId="F11189745" captionText="Figure 9. Mexicope maletensis sp. nov. male holotype (SMF 62000), digitised pencil drawings pleopods: A pleotelson in ventral view, uropodal setae omitted; B pleopod I; C pleopods III and IV (underneath); D pleopod II. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure9" httpUri="https://binary.pensoft.net/fig/985848">9</figureCitation>
, 
<figureCitation id="3B3884DA8DB2D60C5228906025E660FD" captionStart="Figure 10" captionStartId="F11189747" captionText="Figure 10. Mexicope maletensis sp. nov. male holotype (SMF 62000), confocal laser scanning microscopy (cLSM) images of pleopods: A pleotelson in ventral view; B pleopod I; C pleopod II; D pleopod III and IV. Scale bar = 250 µm." figureDoi="10.3897/BDJ.12.e121508.figure10" httpUri="https://binary.pensoft.net/fig/985854">10</figureCitation>
) 0.33 body length, 0.96 Plt length, protopod and rami cylindrical, protopod length 8.3 width, with 6–10 simple setae scattered across article and 3 robust setae on mesial margin; endopod length 1.1 protopod length, caudally pointing parallel to longitudinal body axis, with 8–9 simple setae; endopod length 1.9 exopod length, pointing caudolaterally at an angle of ca. 45 degrees from longitudinal axis, distally with 4–5 simple setae.
</paragraph>
</subSubSection>
<subSubSection id="83458B1233ED73DEB9BC0BF537AB1902" type="Diagnosis">
<paragraph id="C07EAF08DF150DC2FDE338FDEC82B86B">
<heading id="0A3A070BB622320EB73FBDB134B3F48B" reason="title">Diagnosis</heading>
</paragraph>
<paragraph id="C78EDAA6A5E41616F5801B84BB6E2429">Body elongate, widest at pereonite 1. Cephalothorax rostrum bulge-shaped; eyes reduced; preocular spine pointed anterolaterally, posterolateral margin serrated. Pereonites 1–2 and 5–7 lateral projection single; pereonites 3–4 lateral projections bifid; pereonites 1–2 projections posterolateral margin serrated, pereonites 5–7 projections anterolateral margin serrated; pereonites 3–4 lateral projections anterolaterally and posterolaterally serrated; pereonites sternal spines present. Pleotelson proximal quarter narrow, gradually wider towards posterior, lateral margins in medial 2 / 4 concave, distal quarter narrow, tapering lateral margins convex with 4 spine-like setae on each side; posterior apex protruding. Antenna flagellomere 1 length similar to combined length of remaining 11–12 flagellomeres. Mandibular palp absent. Pleopods I lateral lobes projecting beyond medial lobes; apices pointed laterally. Uropods articulated at posterolateral pleotelson margin, extending beyond pleotelson apex; posterolateral margin concave at insertion of uropods. Uropod endopod length subsimilar protopod length, exopod length 0.50 endopod length.</paragraph>
</subSubSection>
<subSubSection id="BBC0405E4503B28E14BBB8D92D46C1F9" type="Etymology">
<paragraph id="25D6EAA7EB649A01447F13B64919B624">
<heading id="37B718EA8DBE2D5F4B34D7D0FF6435E4" reason="title">Etymology</heading>
</paragraph>
<paragraph id="0202616B623BC6EC5F43E8EE1F876459">
The name 
<taxonomicName id="F58DA4CE94A806EA6BA26B276B423B83" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis">
“ 
<emphasis id="6523E35FD515528C11085E5696A1B699" italics="true">maletensis</emphasis>
</taxonomicName>
” is related to the geographic location of the 
<typeStatus id="DD133A6FA09715C878A1BD34DFF7BE26">type</typeStatus>
locality in 
<collectingCountry id="C0B9AF1AD2407A18FFF4B6A1202BE60D" name="Malta">Malta</collectingCountry>
. According to one theory about the etymology of “ 
<collectingCountry id="73D9B929EFC7C6D7116CBD2EEFE37733" name="Malta">Malta</collectingCountry>
”, the name is derived from the Phoenician “ 
<emphasis id="0BE6D8540DCE06585802CE7DEEEC0F32" italics="true">malet</emphasis>
” (also spelled “ 
<emphasis id="20C25A12EB714C5930F7FC4BE5DB1146" italics="true">maleth</emphasis>
”) and means “ place of refuge ”, “ haven ” or “ port ”. So, “ 
<taxonomicName id="F06B66B309FCBF866AA52219245BD28A" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis">
<emphasis id="2033E055E95D37BA4D474B199832E436" italics="true">Mexicope maletensis</emphasis>
</taxonomicName>
” translates into “ Maltese 
<taxonomicName id="880A050ECCC01F0E52E8E21AE2B77FB3" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="2320EFEE2A4B338FB666372F33CF992A" italics="true">Mexicope</emphasis>
</taxonomicName>
” or “ 
<taxonomicName id="E5D8DB7B61DD8C2045D76D504E5622FF" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="F2692B1D3BED4C0E6D9EAEB3D26BB087" italics="true">Mexicope</emphasis>
</taxonomicName>
from 
<collectingCountry id="CB1D60263DF6000C1E0D0DE3FE5AF5BA" name="Malta">Malta</collectingCountry>
”.
</paragraph>
</subSubSection>
<subSubSection id="7FB5C289749DA1F987B4777DEF33AAB5" type="Distribution">
<paragraph id="8F9F72AAD450071FE4543121160C6079">
<heading id="80673F1F0769666DE77CF8E08E8C1B78" reason="title">Distribution</heading>
</paragraph>
<paragraph id="2A6CD3CC01ABB500B7A53DABA87B929B">
Only known from 
<typeStatus id="7682BEBDBA84B399768FEAAD31842F78">type</typeStatus>
locality. The known depth distribution of the genus 
<taxonomicName id="8320846781DFE8B22DDCAEBC02381F17" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="32474DEEC40B833EB9BCDAF7D94350F4" italics="true">Mexicope</emphasis>
</taxonomicName>
is extended, based on the newly-presented record. Previously ranging from 
<quantity id="77CE5109FE4F71ABD8C801E84608E880" metricMagnitude="0" metricUnit="m" metricValue="2.0" unit="m" value="2.0">2 m</quantity>
to 
<quantity id="5FA2F75D1BE86648012092391E743FB9" metricMagnitude="1" metricUnit="m" metricValue="8.0" unit="m" value="80.0">80 m</quantity>
depth, 
<taxonomicName id="89D3EDE2BD298E3855BF29AAC8A8463D" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="D99FF1A9E73737A286A15CF210E79C73" italics="true">Mexicope</emphasis>
</taxonomicName>
now has been reported from 
<quantity id="AF9BFFBAA8B88A3F9FCE3B015887728C" metricMagnitude="0" metricUnit="m" metricValue="2.0" unit="m" value="2.0">2 m</quantity>
to 
<quantity id="CA99206B74BDB1C466776BD5537D9B26" metricMagnitude="2" metricUnit="m" metricValue="1.2" unit="m" value="120.0">120 m</quantity>
depth. Furthermore, the distribution of the family 
<taxonomicName id="A0F84D3F36F408C2941A24982687DC39" class="Malacostraca" family="Acanthaspidiidae" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="family">Acanthaspidiidae</taxonomicName>
is extended to include the Mediterranean Sea.
</paragraph>
</subSubSection>
<subSubSection id="D3BAA80D9A660BD771EE191447E28659" type="Taxon discussion">
<paragraph id="6F0D609922FE242057BBA4FB2B11AF4D">
<heading id="0F97A414F06897B642B57A6A9A1621E1" reason="title">Taxon discussion</heading>
</paragraph>
<paragraph id="48259AE2CB6742AE6270BBAE5DD8E8E1">
A comparisons between the species of 
<taxonomicName id="F8841A7C737CDC05D5CFA3CD03E2AD97" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="AB2D403F2292E5F6C84E8F1B1B3CE8A9" italics="true">Mexicope</emphasis>
</taxonomicName>
were based on male specimens, because only a single male specimen of 
<taxonomicName id="BCD894D4A4DDBE4FA9B0C130A43B078B" authority="Riehl &amp; Schienbein &amp; Mifsud, 2024" authorityName="Riehl &amp; Schienbein &amp; Mifsud" authorityYear="2024" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis" status="sp. nov.">
<emphasis id="D3ED0857CF975AFDC4B791DF13C4F376" italics="true">Mexicope maletensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="1DC5B57ABDDBF8CC80DF52190FE36EC3" rank="species">sp. nov.</taxonomicNameLabel>
was available for this study. While similarities to some congeners are evident in various characters, 
<taxonomicName id="4FEA7DA5673B8E5BB3D72E9384E01A60" authority="Riehl &amp; Schienbein &amp; Mifsud, 2024" authorityName="Riehl &amp; Schienbein &amp; Mifsud" authorityYear="2024" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis" status="sp. nov.">
<emphasis id="967E7C167A13F9C90546E4105D39BB6B" italics="true">M. maletensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="5AEBAEE3855E1E4D9D86E7321C2CEF5D" rank="species">sp. nov.</taxonomicNameLabel>
shows a unique combination of morphological features rendering this species overall distinct.
</paragraph>
<paragraph id="597987A2791AEB5E289349CB3D4435C1">
The assignment of the new species to the 
<taxonomicName id="0BDBF81612DFB3B1D128793C381AEB04" class="Malacostraca" family="Acanthaspidiidae" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="family">Acanthaspidiidae</taxonomicName>
is based on typical family characters, such as the pointed body outline, single lateral projections on pereonites 1 and 5–7, bifid lateral projections on pereonites 3–4, antenna with a long flagellum and article 3 with exopod and cylindrical uropods (
<bibRefCitation id="F15F61F12448444A3DBFF2F0D8134EB1" author="Wagele" firstAuthor="Wagele" journalOrPublisher="E. Schweizerbart'sche Verlagsbuchhandlung Stuttgart" refId="B11189376" refString="Wägele Johann-Wolfgang 1989 Evolution und phylogenetisches System der Isopoda: Stand der Forschung und neue Erkenntnisse Evolution and phylogeny of isopods. New data and the state of affairs E. Schweizerbart'sche Verlagsbuchhandlung Stuttgart 978-3 - 510 - 55026 - 5" title="Evolution und phylogenetisches System der Isopoda: Stand der Forschung und neue Erkenntnisse" year="1989">Wägele 1989</bibRefCitation>
, 
<bibRefCitation id="B8636DDF242D329A9E9351A224FC577A" author="Brandt" firstAuthor="Brandt" issue="3" journalOrPublisher="Zoological Journal of the Linnean Society" pagination="203252" refId="B11189384" refString="Brandt Angelika 1991 A revision of the Acanthaspidiidae Menzies, 1962 (Isopoda: Asellota) Zoological Journal of the Linnean Society 102 3 203 252 10.1111/j.1096-3642.1991.tb00001.x" title="A revision of the Acanthaspidiidae Menzies, 1962 (Isopoda: Asellota)" volume="102" year="1991">Brandt 1991</bibRefCitation>
, 
<bibRefCitation id="7D8445FEDD8872061B5B5F93A7245F87" author="Just" firstAuthor="Just" issue="6" journalOrPublisher="Invertebrate Systematics" pagination="909925" refId="B11189393" refString="Just Jean 2001 New species of Mexicope, stat. nov. and Ianthopsis from Australia and a rediagnosis of Acanthaspidiidae (Isopoda: Asellota) Invertebrate Systematics 15 6 909 925 10.1071/IT00037" title="New species of Mexicope, stat. nov. and Ianthopsis from Australia and a rediagnosis of Acanthaspidiidae (Isopoda: Asellota)" volume="15" year="2001">Just 2001</bibRefCitation>
).
</paragraph>
<paragraph id="7A9751B06F7EAAD7F2A66CFE9E4AC5EA">
Similarities between 
<taxonomicName id="5A0CBB1A20B85A2FCD5BC9F02EB67F42" authorityName="Just" authorityYear="2001" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="westralia">
<emphasis id="B7E1EC52F35408412898F693E77FA0C9" italics="true">M. westralia</emphasis>
</taxonomicName>
and 
<taxonomicName id="1FECBAD98A50C92546FFCAF1C4168F62" authority="Riehl &amp; Schienbein &amp; Mifsud, 2024" authorityName="Riehl &amp; Schienbein &amp; Mifsud" authorityYear="2024" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis" status="sp. nov.">
<emphasis id="4655FA39EE316D178431E67C5BA9324D" italics="true">M. maletensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="58B077112F45E4BEF94D55FF26C3F4DC" rank="species">sp. nov.</taxonomicNameLabel>
are: Ceph inter-antennal margin (frons) curved anteriorly; Prn dorsally with robust setae, Prn 3–4 lateral projections bifid, subequal in length, Prn 6–7 mid-sternal spine present; Plt margins finely serrate, anteriorly to Urp insertion concave, finely serrate; 
<collectionCode id="A138A47594A714D67F647717302B35F8">AII</collectionCode>
peduncle article 6 slightly longer than 5; left Md with 6 denticulate spine-like setae, molar strongly tapering; PlpI proximal 1 / 3 broadest, abruptly narrowing, slightly tapering towards apex; PlpII basis lateral margin mid- 1 / 3 broadly convex with fringe of long slender setae, distal 1 / 3 concavely tapering to blunt point, endopod stylet long, whip-like, coiled extension; PlpIII exopod distal margin with 6 plumose setae; PlpIV exopod about half length of endopod, slender, naked; uropods about as long as Plt.
</paragraph>
<paragraph id="5BBD6F2CE25FA90C06BB2DF7AF809A60">
<taxonomicName id="4DBD8CE8942C77990859F9B1D27EBA5F" authority="Riehl &amp; Schienbein &amp; Mifsud, 2024" authorityName="Riehl &amp; Schienbein &amp; Mifsud" authorityYear="2024" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis" status="sp. nov.">
<emphasis id="77AC130D37ADFDE614A6F47C7365A940" italics="true">Mexicope maletensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="D6A19EA7A4B0067C4632CEF0BE54D862" rank="species">sp. nov.</taxonomicNameLabel>
differs from 
<taxonomicName id="35E745A72D7C9EBAAA244E34DD1185C5" authorityName="Just" authorityYear="2001" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="westralia">
<emphasis id="14AD1AE86DEB9749E81A770DA97417D4" italics="true">M. westralia</emphasis>
</taxonomicName>
as follows: Ceph rostrum present (absent), Prn mid-sternal spine present (presence on Prn 5–7 only), Prn 2 lateral projection single (bifid), Plt proximal quarter narrow, lateral margin convex, becoming wider, lateral margins medial 1 / 2 concave, distal quarter narrowly tapering, lateral margins convex (widening distally, in proximal 1 / 3 with faintly concave margins, middle 1 / 3 broadly convex), Plt apical lobe twice as long as wide (half as long as wide), 
<collectionCode id="14B7DAF797C0C3D8FED0013B516889EE">AII</collectionCode>
flagellum article 1 conjoint, length as long as remaining 13 short articles (half-length of 14 short articles), Md palp absent (present), right Md with 6 denticulate spine-like setae, length progressively increasing, distal to proximal denticles number increasing (with 8 such setae), 
<collectionCode id="D553B3FB8EE0263640CBFD903324C832">MxI</collectionCode>
outer lobe with 13 spines (12 denticulate spine-like setae), Mxp basis length 1.5 width (2.5 width), PlpI dorsally without setules, without tabs (dorsal mid-surface with field of setules, more distally with 2 triangular locking tabs), PlpIII endopod with 7 plumose setae (with 6 plumose setae), Urp outer ramus length 0.50 protopod length (exopod and protopod of similar length), exopod length ca. 0.50 endopod length (ca. 0.80).
</paragraph>
<paragraph id="C4283414F4D01830BABBFD4238AFAA5D">
Similarities between 
<taxonomicName id="5042F1E91BB6392A370658B262D0F8ED" authorityName="Bruce" authorityYear="2004" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="sushara">
<emphasis id="D7DB0E8D6378B221CC53A245A8AA25C7" italics="true">M. sushara</emphasis>
</taxonomicName>
and 
<taxonomicName id="BFABCD89FA36D842211A77B73CD8D614" authority="Riehl &amp; Schienbein &amp; Mifsud, 2024" authorityName="Riehl &amp; Schienbein &amp; Mifsud" authorityYear="2024" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis" status="sp. nov.">
<emphasis id="46E3EBD154005FDDACE6B17E3CC39423" italics="true">M. maletensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="D6BFAAABF8C49B6CD6E5410AABF2AE02" rank="species">sp. nov.</taxonomicNameLabel>
are: body length 2.0 width; inter-antennal margin (frons) more or less convex, rostral spine short, pre-ocular spines prominent, eyes laterally, stalked; Prn 1 anterolateral projections acute, curved towards anteriorly, Prn 3–4 lateral margins distinctly bifid, projections subequal in size, Prn 5–6 lateral projections directed posteriorly, Prn 2–3 and Prn 6–7 projections with anteriorly directed long dorsal setae, Prn 4 setae only on posterior lobe; Prn 7 mid-sternal spine present; 
<collectionCode id="4A9F216E3D8227FA8474628B3ABB79AA">AII</collectionCode>
flagellum conjoint article 1 length subequal length of remaining 12 articles; left Md lacinia 
<emphasis id="20A0DE51CB12D2BDD5097868B5E91E20" italics="true">mobilis</emphasis>
with 4 cusps, molar tapering; 
<collectionCode id="D64556FCEEAEA54A0AA800BCA030BB5A">MxII</collectionCode>
lateral and middle lobes each with 2 long and 2 short strongly serrate setae; Mxp epipodite linguiform; pereopods similar in shape, setation subequal, PI – III proportionally shorter than PIV – VII, length differences mostly caused by length variation of propodus; PlpI proximally widest, lateral margin narrowing abruptly, tapering smoothly to bilobed apex; PlpII lateral margin medially strongly convex, with dense row of simple setae, distolateral margin concave, endopod stylet long, distally coiled; PlpIII exopod distal margin with 6 plumose setae, exopod lateral margin with continuous fringe of setae; PlpIV exopod half as long as endopod, apically acute.
</paragraph>
<paragraph id="E04E60622F9C634EF7EAFDCA79A4506C">
<taxonomicName id="7A60050E094D9BBA709168AE795336F5" authority="Riehl &amp; Schienbein &amp; Mifsud, 2024" authorityName="Riehl &amp; Schienbein &amp; Mifsud" authorityYear="2024" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis" status="sp. nov.">
<emphasis id="DF04976DDDFCB893BA5DE95DE5BDD0B1" italics="true">Mexicope maletensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="992DC07972501610EADAB39534911DDD" rank="species">sp. nov.</taxonomicNameLabel>
differs from 
<taxonomicName id="EE2925C90F860540DAAFD5965B3C8F08" authorityName="Bruce" authorityYear="2004" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="sushara">
<emphasis id="67DE7D220698A413F7DF820A63D8FC67" italics="true">M. sushara</emphasis>
</taxonomicName>
as follows: Ceph rostral projection blunt, barely projecting (rostrum acute, projecting and curved upwards); Plt anterior quarter narrow, lateral margin convex, becoming wider posteriorly, lateral margins medially concave, distally narrowly tapering, convex (proximally narrow, widening abruptly); Prn 2 lateral projection single (bifid); 
<collectionCode id="A59626574377E939226092689826A1FB">AII</collectionCode>
article 6 distodorsal triangular lobe absent (present), Md incisors with 5 cusps (with 4 cusps), right and left Md with 6 denticulate spine-like setae, length and number of denticles progressively increasing from distal to proximal (left spine row of 5 denticulate spine-like setae, 8 simple setae; right spine row with 8 denticulate spine-like setae), palp absent (present); Mxp basis length 1.5 width (2.1 width); PlpI length 2.1 width (3.9 width); PlpII length 1.7 width (2.6 width), apex with 3 long simple setae (with 6 long plumose setae), exopod apex unilobed (bilobed); PlpIII endopod distal margin with 7 plumose setae (with 6 plumose setae).
</paragraph>
<paragraph id="764D75B4ADB0FED0F058810C0EE3CAF3">
Similarities between 
<taxonomicName id="E9BF5CAC54ADDCA32A716D8F4787B976" authorityName="Hooker, 1985 Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="kensleyi">
<emphasis id="B3A7FC34C3B3528FA42DB7FD44F8D7D6" italics="true">M. kensleyi</emphasis>
</taxonomicName>
and the new species are: preocular spines orientated anterolaterally; eyes on stalks; Prns laterally with few setae; 
<collectionCode id="08E9AAC32F445B6A2CCF078B68707952">AI</collectionCode>
heavily setose, flagellum with 13 articles, first article longest; Md palp absent, molar process conical setiferous, left lacinia quadridentate, one distal simple spine; 
<collectionCode id="A41D4E5E6B9F49A8FA9779206ED46B09">MxI</collectionCode>
inner ramus shorter than outer one; Mxp palp 5 - segmented, segment width subequal, distal segment setose, endite broad, outer margin rounded, inner margin 2 coupling hooks, distal third with numerous setules, epipodite short, apically narrowly rounded; P propodus longest segment, merus bulbous, dactylus with two claws; PVII longest; PlpI laterally setose; PlpII protopod outer margin with long and short setae, endopod exceeding length of protopod, distally coiled; Urp elongate, biramous, peduncle length similar exopod length.
</paragraph>
<paragraph id="20CAD3C0D0C1568CCFEDEBB72EE5DA8A">
<taxonomicName id="F9F61DBA315F8E8DE6DEBD87598DD946" authority="Riehl &amp; Schienbein &amp; Mifsud, 2024" authorityName="Riehl &amp; Schienbein &amp; Mifsud" authorityYear="2024" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="maletensis" status="sp. nov.">
<emphasis id="4993208205B784440DDEBE4091FAD381" italics="true">Mexicope maletensis</emphasis>
</taxonomicName>
<taxonomicNameLabel id="E4CF3C421E53FA4A529C0B9163A06D41" rank="species">sp. nov.</taxonomicNameLabel>
differs from 
<taxonomicName id="E88E2A6578385FD3AE691E4EB0C7FB7C" authorityName="Hooker, 1985 Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="species" species="kensleyi">
<emphasis id="0D4C336F53636118D1C120ACF2D7C05A" italics="true">M. kensleyi</emphasis>
</taxonomicName>
as follows: body length almost 2.0 width (length almost 3.0 width), eyes ventrolaterally (dorsolaterally), Prn 1 widest (Prn 3 and 4 widest); left Md distally with 5 dentate spines (with 6 spines); PlpII endopod distally coiled at least 10 times (stylet coiled once).
</paragraph>
</subSubSection>
<subSubSection id="4CDA83681A1EE300E7AB7D60A0D2E5DA" type="Notes">
<paragraph id="CD2BB0205B201667D3C5C178CAC29ED3">
<heading id="9F8F47138B52FEE4D8F842FF6DB7E8E4" reason="title">Notes</heading>
</paragraph>
<paragraph id="95AA1F69C83061D881D30D2260B7635E">
The initial difficulties we had in assigning the new species to a genus are emblematic of the currently inadequate and vague diagnoses of all three genera of 
<taxonomicName id="96B61587ECCCE74E45A05FA06DC49E86" class="Malacostraca" family="Acanthaspidiidae" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="family">Acanthaspidiidae</taxonomicName>
(see also 
<bibRefCitation id="917F11D33133BE8D71D609BB3C4A811A" author="Timm Marlene &amp; Kaiser Stefanie &amp; Brandt Angelika" etAl="et al." firstAuthor="Timm" issue="1" journalOrPublisher="Zootaxa" pagination="238258" refId="B11189444" refString="Timm Marlene, Kaiser Stefanie, Brandt Angelika 2013 A new species of Acanthaspidia Stebbing, 1898 (Isopoda, Asellota, Acanthaspidiidae) from the bathyal Weddell Sea (Southern Ocean) Zootaxa 3692 1 238 258 http://biotaxa.org.ololo.sci-hub.bz/Zootaxa/article/view/zootaxa.3692.1.12 10.11646/zootaxa.3692.1.12" title="A new species of Acanthaspidia Stebbing, 1898 (Isopoda, Asellota, Acanthaspidiidae) from the bathyal Weddell Sea (Southern Ocean)" volume="3692" year="2013">Timm et al. (2013)</bibRefCitation>
). With previously only three known species for the genus 
<taxonomicName id="1B5378AFD81A489DF8112FD52EF28D83" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="FB061362214117879498B3AD5D86F4C5" italics="true">Mexicope</emphasis>
</taxonomicName>
, it is no surprise that, for each new species, a modification of the generic diagnoses was necessary and the discrimination amongst the acanthaspidiid genera was partially blurry. This development is particularly evident in 
<taxonomicName id="B33A5816FD0AF3A1078A7E4394B90C4B" authorityName="Beddard" authorityYear="1886" class="Malacostraca" family="Acanthaspidiidae" genus="Ianthopsis" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="500A9C39D79D3FE9C2F52F2A56719BA9" italics="true">Ianthopsis</emphasis>
</taxonomicName>
(see taxon discussion for 
<emphasis id="EC7591FD84A83412E247EF1CB16285C8" italics="true">Ianthosis</emphasis>
below).
</paragraph>
<paragraph id="2A596387613D2D02418D6142C4F521DB">
A new diagnosis for 
<taxonomicName id="0B4F25864EF29E4A9FBD23E5C624C3DC" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="ABE94896704058935D3FC9C6708A5304" italics="true">Mexicope</emphasis>
</taxonomicName>
is presented here because previous diagnoses of the genera 
<taxonomicName id="62D71AA412118F8AE0AC1B4110719B03" authorityName="Beddard" authorityYear="1886" class="Malacostraca" family="Acanthaspidiidae" genus="Ianthopsis" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="56A0A1A0293173B0B8BF461F9D6F4E51" italics="true">Ianthopsis</emphasis>
</taxonomicName>
and 
<taxonomicName id="C93B0B67ADC4FF25BA57631D0916BF62" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="07E512E00831531488E8CC299F5EB210" italics="true">Mexicope</emphasis>
</taxonomicName>
(
<bibRefCitation id="35CD1120A771B38C3EDB4E0E8932B580" author="Just" firstAuthor="Just" issue="6" journalOrPublisher="Invertebrate Systematics" pagination="909925" refId="B11189393" refString="Just Jean 2001 New species of Mexicope, stat. nov. and Ianthopsis from Australia and a rediagnosis of Acanthaspidiidae (Isopoda: Asellota) Invertebrate Systematics 15 6 909 925 10.1071/IT00037" title="New species of Mexicope, stat. nov. and Ianthopsis from Australia and a rediagnosis of Acanthaspidiidae (Isopoda: Asellota)" volume="15" year="2001">Just 2001</bibRefCitation>
, 
<bibRefCitation id="62D6419E9D61DBF4EB0D115ABAFE0EFF" author="Bruce" firstAuthor="Bruce" journalOrPublisher="Zootaxa" pagination="111" refId="B11189402" refString="Bruce N. L. 2004 Mexicope sushara sp. nov., the first New Zealand record of the isopod crustacean family Acanthaspidiidae (Asellota) Zootaxa 489 1 11 http://decapoda.nhm.org/pdfs/9978/9978.pdf10.11646/zootaxa.489.1.1" title="Mexicope sushara sp. nov., the first New Zealand record of the isopod crustacean family Acanthaspidiidae (Asellota)" volume="489" year="2004">Bruce 2004</bibRefCitation>
) show significant overlap between 
<taxonomicName id="13444EC6A95707A7A7E323106FC2A712" authorityName="Beddard" authorityYear="1886" class="Malacostraca" family="Acanthaspidiidae" genus="Ianthopsis" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="8941C8B31521A2B83BE25882E4968240" italics="true">Ianthopsis</emphasis>
</taxonomicName>
and 
<taxonomicName id="2DD6E63E65B309C6B5FAB0B2D4685BFB" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="A9AF721D653FBE0325ACF3EE5431B2E5" italics="true">Mexicope</emphasis>
</taxonomicName>
in some character states leading to difficulties to differentiate between these genera and to classify the new species described here. Character states that support the classification of the new species as either 
<taxonomicName id="62582FAE88B40EFD38E71C862B3A3214" authorityName="Beddard" authorityYear="1886" class="Malacostraca" family="Acanthaspidiidae" genus="Ianthopsis" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="ED95D958589844C9FC0368CFD6E4DA04" italics="true">Ianthopsis</emphasis>
</taxonomicName>
or 
<taxonomicName id="40FC20B483E21A098E24F75DAC109631" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="7CFA6FD16951AACE266F8619671A479C" italics="true">Mexicope</emphasis>
</taxonomicName>
are the absence of dorsal tubercles on the cephalothorax, the presence of eyes on eyestalks, single lateral projections on pereonite 1, the absence of tergal spines or humps, a fringe of long setae laterally on the second pleopod basis which are longest apically, finely serrated pleotelson margins and uropod rami that are at least as long as the peduncle. The presence of a simple, bulge-shaped rostrum, the antennula length of 0.25 times antenna length, the absence of a triangular lobe on antenna article 6 and the short, curved, robust setae on the pleotelson on the one hand speak for a classification of the new species as 
<taxonomicName id="9B89814390245EF15EFBDEB43043E6E0" authorityName="Beddard" authorityYear="1886" class="Malacostraca" family="Acanthaspidiidae" genus="Ianthopsis" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="8C52E771D027D6C20FF0646EF3D2074C" italics="true">Ianthopsis</emphasis>
</taxonomicName>
according to the previous diagnosis. The classification of the new species as 
<taxonomicName id="FA8552F4BC54D788655768AD46C48A51" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="592D204D6D4D2B973109E902387F2435" italics="true">Mexicope</emphasis>
</taxonomicName>
, on the other hand, is supported by the presence of a pre-ocular spine, rows of elongate, simple setae on the posterolateral projections of pereonites 2–4 and 6–7, the presence of a sternal spine on pereonite 7, prognathous mouthparts, a strongly tapering, pointed mandibular molar with long apical setae, the lack of a mandibular palp, a short maxilliped epipod reaching only half way between the coxo-basal articulation and the palp articulation, a coiled pleopod II stylet and uropods that are as long as the pleotelson. In summary, over ten, partially complex characters suggest the classification as 
<taxonomicName id="C4591D91F7C416FF69A06FCE6805C0D7" authorityName="Hooker" authorityYear="1985" class="Malacostraca" family="Acanthaspidiidae" genus="Mexicope" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="8C5BA947509B31961EEFEC16D6B084C8" italics="true">Mexicope</emphasis>
</taxonomicName>
as opposed to only four, relatively weak characters in favour of 
<taxonomicName id="E8D4C443F9ED6B83EB340F65A70589C4" authorityName="Beddard" authorityYear="1886" class="Malacostraca" family="Acanthaspidiidae" genus="Ianthopsis" kingdom="Animalia" order="Isopoda" phylum="Arthropoda" rank="genus">
<emphasis id="E3A64DD7B16BF70F6B26509C4ECA6FFF" italics="true">Ianthopsis</emphasis>
</taxonomicName>
(see Table 
<tableCitation id="B3A17EC8AE99C95AF5D984BA9D8B6D04" captionStart="Table 1" captionStartId="T11189718" captionText="Table 1. Comparison of diagnostic characters of Ianthopsis (Just 2001) and Mexicope (Just 2001, Bruce 2004) with those of the new species Mexicope maletensis sp. nov. Similarities / overlaps are highlighted in grey, entirely identical character states mentioned in the aforementioned diagnoses were omitted." httpUri="http://table.plazi.org/id/B49F0F3B3AA18B48B4B64590D1CDAA5A" tableUuid="B49F0F3B3AA18B48B4B64590D1CDAA5A">1</tableCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>