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<document id="64EF2F70350AA1F641F0E0C95784103F" ID-CLB-Dataset="266147" ID-DOI="10.1093/zoolinnean/zlad032" ID-GBIF-Dataset="684543f4-855c-492a-b163-a157473a187c" ID-ISSN="0024-4082" ID-Zenodo-Dep="8326346" ID-ZooBank="E1210342-9DBD-4D89-ABF5-1925792D0E14C" IM.bibliography_approvedBy="juliana" IM.illustrations_approvedBy="juliana" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_approvedBy="juliana" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="juliana" checkinTime="1693804639940" checkinUser="plazi" docAuthor="Alonso, Felipe, Terán, Guillermo Enrique, Alanís, Wilson Sebastián Serra, Calviño, Pablo, Montes, Martin Miguel, García, Ignacio Daniel, Barneche, Jorge Adrián, Almirón, Adriana, Ciotek, Liliana, Giorgis, Pablo &amp; Cascioưa, Jorge" docDate="2023" docId="03CA879AFFAFFFFFFF3EFCB0FB6AFE9C" docLanguage="en" docName="zlad032.pdf" docOrigin="Zoological Journal of the Linnean Society 199 (1)" docSource="http://dx.doi.org/10.1093/zoolinnean/zlad032" docStyle="DocumentStyle:4F230B9370E98E256D973D6DFB57F36C.1:ZoolJLinnSoc.2023-.journal_article" docStyleId="4F230B9370E98E256D973D6DFB57F36C" docStyleIdOld="36B3BD6A90C22AB4F7F465C853188CC8" docStyleName="ZoolJLinnSoc.2023-.journal_article" docStyleNameOld="ZoolJLinnSoc.2017-.journal_article" docStyleOld="DocumentStyle:36B3BD6A90C22AB4F7F465C853188CC8.7:ZoolJLinnSoc.2017-.journal_article" docStyleVersion="1" docStyleVersionOld="7" docTitle="Acrolebias Costa 2008, stat. nov." docType="treatment" docVersion="5" lastPageNumber="291" masterDocId="FFF3FFE2FFA4FFF4FFC4FF8BFFACFFE4" masterDocTitle="From the mud to the tree: phylogeny of Austrolebias killifishes, new generic structure and description of a new species (Cyprinodontiformes: Rivulidae)" masterLastPageNumber="309" masterPageNumber="280" pageNumber="291" updateTime="1699625782891" updateUser="plazi">
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<mods:title id="02E684E16846A1D5E1C140A2DC2C8920">From the mud to the tree: phylogeny of Austrolebias killifishes, new generic structure and description of a new species (Cyprinodontiformes: Rivulidae)</mods:title>
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<mods:namePart id="C64D0CF1A1F0356ECE56820AA6B4BE84">Alonso, Felipe</mods:namePart>
<mods:affiliation id="B743A4D8B61491ABDD904257280CEC7D">Instituto de Bio y Geociencias del NOA (IBIGEO), National Scientific and Technical Research Council (CONICET) - UNSa, Av. 9 de Julio 14, A 4405 BBA Rosario de Lerma, Salta, Argentina &amp; Killifish Foundation, La Plata, Buenos Aires Province, Argentina</mods:affiliation>
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<mods:namePart id="D159D6D372A19721853499B99570761F">Terán, Guillermo Enrique</mods:namePart>
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<mods:namePart id="929D1C6BFDCD9DB4106072A8E6D3CCDE">Alanís, Wilson Sebastián Serra</mods:namePart>
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<mods:namePart id="EC7ADC96617266F4196B0A8A900E0CB4">Montes, Martin Miguel</mods:namePart>
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<mods:namePart id="D44B30E65DB14C968F180F2C90E432C4">García, Ignacio Daniel</mods:namePart>
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<mods:namePart id="EEFA77F3DF5002D5AE0373CD7A33D045">Almirón, Adriana</mods:namePart>
<mods:affiliation id="A86B4DF2B0600929C5EE2A4F3717F7E4">Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo, División Zoología Vertebrados, La Plata, Buenos Aires Province, Argentina</mods:affiliation>
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<mods:affiliation id="D3D00E17BC0D8916ED1F6C3423E1AA5A">Administración de Parques Nacionales, Parque Nacional Campos del Tuyú (7103), General Lavalle, Buenos Aires Province, Argentina</mods:affiliation>
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<mods:namePart id="5D2FFF7B241C85ACA559B5DE982C1FF1">Giorgis, Pablo</mods:namePart>
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<mods:namePart id="A7D5D32E6171CB2F60BAC16D30AE9497">Cascioưa, Jorge</mods:namePart>
<mods:affiliation id="C955431D7D87E632BB5A907E6B73ADEB">Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo, División Zoología Vertebrados, La Plata, Buenos Aires Province, Argentina</mods:affiliation>
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<mods:title id="69E2B2A608017CF84326D309443ACA36">Zoological Journal of the Linnean Society</mods:title>
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<mods:date id="2E627E0AD39CC293B70659F7642C35FE">2023</mods:date>
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Genus
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<emphasis id="B917EA9EFFAFFFFFFE80FCB0FE00FCB2" bold="true" box="[324,428,827,854]" italics="true" pageId="11" pageNumber="291">Acrolebias</emphasis>
Costa, 2008
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<taxonomicName id="4C634D0FFFAFFFFFFF45FCE9FEC8FC9E" authority="Costa, 2008" authorityName="Costa" authorityYear="2008" box="[129,356,866,890]" family="Rivulidae" genus="Acrolebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFF45FCE9FF49FC9E" box="[129,229,866,890]" italics="true" pageId="11" pageNumber="291">Acrolebias</emphasis>
Costa, 2008
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as a subgenus of
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<emphasis id="B917EA9EFFAFFFFFFDD6FCE9FD25FC9E" box="[530,649,866,890]" italics="true" pageId="11" pageNumber="291">Austrolebias</emphasis>
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.
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<emphasis id="B917EA9EFFAFFFFFFF45FC17FF50FC57" box="[129,252,924,947]" italics="true" pageId="11" pageNumber="291">Type species:</emphasis>
<taxonomicName id="4C634D0FFFAFFFFFFEC5FC10FDFCFC57" ID-CoL="6C85S" authority="Myers, 1947" authorityName="Myers" authorityYear="1947" box="[257,592,923,948]" family="Rivulidae" genus="Cynolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="species" species="carvalhoi">
<emphasis id="B917EA9EFFAFFFFFFEC5FC10FE66FC57" box="[257,458,923,947]" italics="true" pageId="11" pageNumber="291">Cynolebias carvalhoi</emphasis>
Myers, 1947
</taxonomicName>
.
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Diagnosis:
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</emphasis>
differs from all other genera of the
<taxonomicName id="4C634D0FFFAFFFFFFF45FC7FFF54FBE8" authorityName="Costa" authorityYear="1998" box="[129,248,1012,1036]" family="Rivulidae" genus="Austrolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFF45FC7FFF54FBE8" box="[129,248,1012,1036]" italics="true" pageId="11" pageNumber="291">Austrolebias</emphasis>
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genus group by unique male coloration consisting of golden body flanks with eight to nine purple-grey bars.
</paragraph>
<paragraph id="8BDC368CFFAFFFFFFF58FBB8FF63FAC2" blockId="11.[129,778,981,1318]" pageId="11" pageNumber="291">
Additionally, this genus can be identified by the following unique combination of characters: no contact organs on anal fin in male; bases of pelvic fins separated by small interspace; anal fin short in females; urogenital papillae not attached to anal fin; dorsal fin origin anterior to anal fin origin; 21 or 22 dorsal fin rays in males,
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females; 21or 22 anal fin rays in males,
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females; and 2729 longitudinal series scales (
<bibRefCitation id="EFF24B7DFFAFFFFFFD0AFB64FF13FAC2" author="Costa WJEM" pageId="11" pageNumber="291" pagination="1 - 162" refId="ref22591" refString="Costa WJEM. The South American annual killifish genus Austrolebias (Teleostei: Cyprinodontiformes: Rivulidae): phylogenetic relationships, descriptive morphology and taxonomic revision. Zootaxa 2006 a; 1213: 1 - 162." type="journal article" year="2006">Costa 2006a</bibRefCitation>
).
</paragraph>
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<emphasis id="B917EA9EFFAFFFFFFF45FACCFEF3FABB" box="[129,351,1351,1375]" italics="true" pageId="11" pageNumber="291">Differential diagnosis:</emphasis>
The genus
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<emphasis id="B917EA9EFFAFFFFFFE31FACCFDF5FABB" box="[501,601,1351,1375]" italics="true" pageId="11" pageNumber="291">Acrolebias</emphasis>
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can be distinguished from all other genera of the
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<emphasis id="B917EA9EFFAFFFFFFE35FAECFDC4FA9B" box="[497,616,1383,1407]" italics="true" pageId="11" pageNumber="291">Austrolebias</emphasis>
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genus group by having &lt;40 scales in the longitudinal series (vs.&gt; 40 scales in
<taxonomicName id="4C634D0FFFAFFFFFFF45FA2EFF55FA59" authorityName="Alonso &amp; Terán &amp; Alanís &amp; Calviño &amp; Montes &amp; García &amp; Barneche &amp; Almirón &amp; Ciotek &amp; Giorgis &amp; Cascioưa" authorityYear="2023" box="[129,249,1445,1469]" family="Rivulidae" genus="Titanolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFF45FA2EFF55FA59" box="[129,249,1445,1469]" italics="true" pageId="11" pageNumber="291">Titanolebias</emphasis>
</taxonomicName>
); by the presence of scales in the preopercular region (vs. absent in
<taxonomicName id="4C634D0FFFAFFFFFFEFBFA4EFE11FA39" authorityName="Costa" authorityYear="2008" box="[319,445,1477,1501]" family="Rivulidae" genus="Gymnolebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFEFBFA4EFE11FA39" box="[319,445,1477,1501]" italics="true" pageId="11" pageNumber="291">Gymnolebias</emphasis>
</taxonomicName>
); by the basal and medial region of pectoral fins being non-hyaline in adult males (vs. hyaline in
<taxonomicName id="4C634D0FFFAFFFFFFF45F988FF56F9FF" authorityName="Alonso &amp; Terán &amp; Alanís &amp; Calviño &amp; Montes &amp; García &amp; Barneche &amp; Almirón &amp; Ciotek &amp; Giorgis &amp; Cascioưa" authorityYear="2023" box="[129,250,1539,1563]" family="Rivulidae" genus="Amatolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFF45F988FF56F9FF" box="[129,250,1539,1563]" italics="true" pageId="11" pageNumber="291">Amatolebias</emphasis>
</taxonomicName>
,
<taxonomicName id="4C634D0FFFAFFFFFFEC2F988FED1F9FF" authorityName="Costa" authorityYear="1998" box="[262,381,1539,1563]" family="Rivulidae" genus="Austrolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFEC2F988FED1F9FF" box="[262,381,1539,1563]" italics="true" pageId="11" pageNumber="291">Austrolebias</emphasis>
</taxonomicName>
and
<taxonomicName id="4C634D0FFFAFFFFFFE77F988FD80F9FF" authorityName="Alonso &amp; Terán &amp; Alanís &amp; Calviño &amp; Montes &amp; García &amp; Barneche &amp; Almirón &amp; Ciotek &amp; Giorgis &amp; Cascioưa" authorityYear="2023" box="[435,556,1539,1563]" family="Rivulidae" genus="Garcialebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFE77F988FD80F9FF" box="[435,556,1539,1563]" italics="true" pageId="11" pageNumber="291">Garcialebias</emphasis>
</taxonomicName>
); by the lack of contact organs on the anal fin of males (vs. present in
<taxonomicName id="4C634D0FFFAFFFFFFD45F9A9FCA5F9DE" authorityName="Costa" authorityYear="2008" box="[641,777,1570,1594]" family="Rivulidae" genus="Acantholebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFD45F9A9FCA5F9DE" box="[641,777,1570,1594]" italics="true" pageId="11" pageNumber="291">Acantholebias</emphasis>
</taxonomicName>
and
<taxonomicName id="4C634D0FFFAFFFFFFF69F9C9FE8FF9BE" authorityName="Costa" authorityYear="2008" box="[173,291,1602,1626]" family="Rivulidae" genus="Cypholebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFF69F9C9FE8FF9BE" box="[173,291,1602,1626]" italics="true" pageId="11" pageNumber="291">Cypholebias</emphasis>
</taxonomicName>
); by the rostral region scaled and vertically directed suborbital bar (vs. suborbital bar posteriorly directed and anterior region of head near rostral neuromasts without scales in
<taxonomicName id="4C634D0FFFAFFFFFFF45F92BFF41F95C" authorityName="Costa" authorityYear="1998" box="[129,237,1696,1720]" class="Actinopterygii" family="Rivulidae" genus="Megalebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFF45F92BFF41F95C" box="[129,237,1696,1720]" italics="true" pageId="11" pageNumber="291">Megalebias</emphasis>
</taxonomicName>
); by markings on the distal portion of the dorsal fin, if present, not fused (vs. present and fused in
<taxonomicName id="4C634D0FFFAFFFFFFD8CF934FD01F933" authorityName="sensu Costa" authorityYear="2008" box="[584,685,1727,1751]" family="Rivulidae" genus="Argolebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFD8CF934FD01F933" box="[584,685,1727,1751]" italics="true" pageId="11" pageNumber="291">Argolebias</emphasis>
</taxonomicName>
); and by unpaired fins dark grey on males (vs. with bluish to greenish iridescences in
<taxonomicName id="4C634D0FFFAFFFFFFEC1F975FEC7F8F2" authorityName="Alonso &amp; Terán &amp; Alanís &amp; Calviño &amp; Montes &amp; García &amp; Barneche &amp; Almirón &amp; Ciotek &amp; Giorgis &amp; Cascioưa" authorityYear="2023" box="[261,363,1790,1814]" family="Rivulidae" genus="Matilebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFEC1F975FEC7F8F2" box="[261,363,1790,1814]" italics="true" pageId="11" pageNumber="291">Matilebias</emphasis>
</taxonomicName>
).
</paragraph>
</subSubSection>
<subSubSection id="C3796507FFAFFFFFFF45F8BCFB1FFEE2" pageId="11" pageNumber="291" type="discussion">
<paragraph id="8BDC368CFFAFFFFFFF45F8BCFB1FFEE2" blockId="11.[129,777,1847,1965]" lastBlockId="11.[825,1474,144,262]" pageId="11" pageNumber="291">
<emphasis id="B917EA9EFFAFFFFFFF45F8BCFE85F8AB" box="[129,297,1847,1871]" italics="true" pageId="11" pageNumber="291">Synapomorphies:</emphasis>
We redefine
<taxonomicName id="4C634D0FFFAFFFFFFE73F8BCFDB7F8AB" authorityName="Costa" authorityYear="2008" box="[439,539,1847,1871]" family="Rivulidae" genus="Acrolebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAFFFFFFE73F8BCFDB7F8AB" box="[439,539,1847,1871]" italics="true" pageId="11" pageNumber="291">Acrolebias</emphasis>
</taxonomicName>
as a monotypic genus that presents the following five morphological autapomorphies (see Supporting Information, Appendix S5): pastel yellow to golden centre of most scales on ventral half of flank, above anal fin, in males (1:2); male pelvic fin bases separated by an interspace (57:0); &lt;14 abdominal vertebrae (169:0); dorsal radial of pectoral fin present (189:1); and flanks with well-defined and regular vertical dark grey bars (16:1).
</paragraph>
</subSubSection>
<subSubSection id="C3796507FFAFFFFFFCFDFEACFA03FEDB" box="[825,1455,295,319]" pageId="11" pageNumber="291" type="taxon_list">
<paragraph id="8BDC368CFFAFFFFFFCFDFEACFA03FEDB" blockId="11.[825,1455,295,319]" box="[825,1455,295,319]" pageId="11" pageNumber="291">
<emphasis id="B917EA9EFFAFFFFFFCFDFEACFC74FEDB" box="[825,984,295,319]" italics="true" pageId="11" pageNumber="291">Included species:</emphasis>
<taxonomicName id="4C634D0FFFAFFFFFFC1AFEACFA97FEDB" authority="(Myers, 1947)" authorityName="Alonso &amp; Terán &amp; Alanís &amp; Calviño &amp; Montes &amp; García &amp; Barneche &amp; Almirón &amp; Ciotek &amp; Giorgis &amp; Cascioưa" authorityYear="2023" baseAuthorityName="Myers" baseAuthorityYear="1947" box="[990,1339,295,319]" family="Rivulidae" genus="Acrolebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="11" pageNumber="291" phylum="Chordata" rank="species" species="carvalhoi" status="comb. nov.">
<emphasis id="B917EA9EFFAFFFFFFC1AFEACFB0DFEDB" box="[990,1185,295,319]" italics="true" pageId="11" pageNumber="291">Acrolebias carvalhoi</emphasis>
(Myers, 1947)
</taxonomicName>
<taxonomicNameLabel id="A22457E5FFAFFFFFFA84FEACFA03FEDB" box="[1344,1455,295,319]" pageId="11" pageNumber="291" rank="species">comb. nov.</taxonomicNameLabel>
</paragraph>
</subSubSection>
<subSubSection id="C3796507FFAFFFFFFCFDFEEBFB6AFE9C" box="[825,1222,352,377]" pageId="11" pageNumber="291" type="distribution">
<paragraph id="8BDC368CFFAFFFFFFCFDFEEBFB6AFE9C" blockId="11.[825,1222,352,377]" box="[825,1222,352,377]" pageId="11" pageNumber="291">
<emphasis id="B917EA9EFFAFFFFFFCFDFEEBFC1BFE9C" box="[825,951,352,376]" italics="true" pageId="11" pageNumber="291">Distribution:</emphasis>
Upper Iguazú River basin.
</paragraph>
</subSubSection>
</treatment>
</document>