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<document id="982397A627FE5D1571F2A3550C65D773" 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="03CA879AFFAEFFFEFED2FBE4FBF6FDB0" 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="Megalebias Costa 1998" docType="treatment" docVersion="4" lastPageNumber="290" 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="290" updateTime="1699625782891" updateUser="plazi">
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<mods:title id="9DA10EE5AE216228EA4BAB1292A46146">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="6D7F68F434D67A7DA360454AAE565C20">Alonso, Felipe</mods:namePart>
<mods:affiliation id="3648CFD1C94929DDE70782F2608FA65F">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="201A737778472F073135E9E0153650C9">Terán, Guillermo Enrique</mods:namePart>
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<mods:namePart id="A792AEAC9C3501B45A33E127E24D0993">Alanís, Wilson Sebastián Serra</mods:namePart>
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<mods:namePart id="96C4F0DE0EE77B072A4A0216EFD0F6DD">Montes, Martin Miguel</mods:namePart>
<mods:affiliation id="CBE96051833981A918D1470A3C78046C">Killifish Foundation, La Plata, Buenos Aires Province, Argentina &amp; Centro de Estudios Parasitológicos y de Vectores - [CCT-CONICET - La Plata] Centro Científico Tecnológico Conicet, La Plata - [Conicet] Consejo Nacional De Investigaciones Científicas y Técnicas, La Plata, Buenos Aires Province, Argentina</mods:affiliation>
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<mods:affiliation id="3C7538F7E2C3175C19FFA983F3B8A580">Killifish Foundation, La Plata, Buenos Aires Province, Argentina &amp; Centro de Estudios Parasitológicos y de Vectores - [CCT-CONICET - La Plata] Centro Científico Tecnológico Conicet, La Plata - [Conicet] Consejo Nacional De Investigaciones Científicas y Técnicas, La Plata, Buenos Aires Province, Argentina</mods:affiliation>
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<mods:namePart id="E6F95AEDE0709D0D1EC4FD91FE143776">Almirón, Adriana</mods:namePart>
<mods:affiliation id="8BA93364C19F4DC389357810DA41F705">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:namePart id="E289FBCED0D645942E4A31D76D5133AE">Ciotek, Liliana</mods:namePart>
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<mods:namePart id="1D193A61B9DBAF42D442DEF2BDE97DEE">Giorgis, Pablo</mods:namePart>
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<mods:namePart id="F172BC6C808A0B9DF8F487B50E41E2D9">Cascioưa, Jorge</mods:namePart>
<mods:affiliation id="FEB3C37F2F18172CD15AD8666575BC20">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="1CD98798F26523E9DD989235A15009E1">Zoological Journal of the Linnean Society</mods:title>
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<mods:date id="B09DC5E97020946EEF137A02E102436E">2023</mods:date>
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<treatment id="03CA879AFFAEFFFEFED2FBE4FBF6FDB0" ID-DOI="http://doi.org/10.5281/zenodo.8328877" ID-GBIF-Taxon="212969865" ID-Zenodo-Dep="8328877" LSID="urn:lsid:plazi:treatment:03CA879AFFAEFFFEFED2FBE4FBF6FDB0" httpUri="http://treatment.plazi.org/id/03CA879AFFAEFFFEFED2FBE4FBF6FDB0" lastPageNumber="290" pageId="10" pageNumber="290">
<subSubSection id="C3796507FFAEFFFEFED2FBE4FDF9FB6D" box="[278,597,1134,1161]" pageId="10" pageNumber="290" type="nomenclature">
<paragraph id="8BDC368CFFAEFFFEFED2FBE4FDF9FB6D" blockId="10.[113,762,1134,1229]" box="[278,597,1134,1161]" pageId="10" pageNumber="290">
<emphasis id="B917EA9EFFAEFFFEFED2FBE4FDF9FB6D" bold="true" box="[278,597,1134,1161]" pageId="10" pageNumber="290">
Genus
<taxonomicName id="4C634D0FFFAEFFFEFEA4FBE5FDF9FB6D" authority="Costa, 1998" authorityName="Costa" authorityYear="1998" box="[352,597,1134,1161]" class="Actinopterygii" family="Rivulidae" genus="Megalebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFEA4FBE5FE7DFB6D" bold="true" box="[352,465,1134,1161]" italics="true" pageId="10" pageNumber="290">Megalebias</emphasis>
Costa, 1998
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</emphasis>
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<paragraph id="8BDC368CFFAEFFFEFFB5FB1EFE43FB28" blockId="10.[113,762,1134,1229]" pageId="10" pageNumber="290">
<taxonomicName id="4C634D0FFFAEFFFEFFB5FB1EFEC8FB49" authority="Costa, 1998" authorityName="Costa" authorityYear="1998" box="[113,356,1173,1197]" class="Actinopterygii" family="Rivulidae" genus="Megalebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFFB5FB1EFF71FB49" box="[113,221,1173,1197]" italics="true" pageId="10" pageNumber="290">Megalebias</emphasis>
Costa, 1998
</taxonomicName>
as genus. Synonym of
<taxonomicName id="4C634D0FFFAEFFFEFD9CFB1EFD63FB49" ID-CoL="36CL" authorityName="Costa" authorityYear="1998" box="[600,719,1173,1197]" family="Rivulidae" genus="Austrolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFD9CFB1EFD63FB49" box="[600,719,1173,1197]" italics="true" pageId="10" pageNumber="290">Austrolebias</emphasis>
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but valid as a subgenus by
<bibRefCitation id="EFF24B7DFFAEFFFEFE90FB3EFE46FB29" author="Costa WJEM" box="[340,490,1205,1229]" pageId="10" pageNumber="290" 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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<paragraph id="8BDC368CFFAEFFFEFFB5FB64FF54FAC1" blockId="10.[113,762,1262,1317]" pageId="10" pageNumber="290">
<emphasis id="B917EA9EFFAEFFFEFFB5FB64FF43FAE2" box="[113,239,1263,1286]" italics="true" pageId="10" pageNumber="290">Type species:</emphasis>
<taxonomicName id="4C634D0FFFAEFFFEFF32FB65FDE9FAE2" ID-CoL="6BVVB" authority="Ahl, 1924" authorityName="Ahl" authorityYear="1924" box="[246,581,1262,1286]" family="Rivulidae" genus="Cynolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="species" species="wolterstorffi">
<emphasis id="B917EA9EFFAEFFFEFF32FB65FE74FAE2" box="[246,472,1262,1286]" italics="true" pageId="10" pageNumber="290">Cynolebias wolterstorffi</emphasis>
Ahl, 1924
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(
<typeStatus id="54D8882EFFAEFFFEFD90FB65FD29FAE2" box="[596,645,1262,1286]" pageId="10" pageNumber="290">type</typeStatus>
by original designation).
</paragraph>
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<subSubSection id="C3796507FFAEFFFEFFB5FACCFA1CFE26" pageId="10" pageNumber="290" type="diagnosis">
<paragraph id="8BDC368CFFAEFFFEFFB5FACCFD8BF9FF" blockId="10.[113,762,1351,1563]" pageId="10" pageNumber="290">
<emphasis id="B917EA9EFFAEFFFEFFB5FACCFF7BFABA" box="[113,215,1351,1374]" italics="true" pageId="10" pageNumber="290">Diagnosis:</emphasis>
The genus
<taxonomicName id="4C634D0FFFAEFFFEFE90FACCFE6CFABB" authorityName="Costa" authorityYear="1998" box="[340,448,1351,1375]" class="Actinopterygii" family="Rivulidae" genus="Megalebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFE90FACCFE6CFABB" box="[340,448,1351,1375]" italics="true" pageId="10" pageNumber="290">Megalebias</emphasis>
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can be differentiated from all other genera of the
<taxonomicName id="4C634D0FFFAEFFFEFE81FAEDFE10FA9A" authorityName="Costa" authorityYear="1998" box="[325,444,1382,1406]" family="Rivulidae" genus="Austrolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFE81FAEDFE10FA9A" box="[325,444,1382,1406]" italics="true" pageId="10" pageNumber="290">Austrolebias</emphasis>
</taxonomicName>
genus group by the following unique combination of character states: (1) absence of scales in the anterior portion adjacent to the rostral neuromasts; (2) contact organs on upper pectoral fin rays of males; (3) lack of contact organs on the anal fin; (4) 3540 lateral line scales; and (5) pelvic fin bases separated by a gap in males.
</paragraph>
<paragraph id="8BDC368CFFAEFFFEFFB5F9B7FB43FF23" blockId="10.[113,763,1596,1996]" lastBlockId="10.[810,1460,144,450]" pageId="10" pageNumber="290">
<emphasis id="B917EA9EFFAEFFFEFFB5F9B7FEE3F9B0" box="[113,335,1596,1620]" italics="true" pageId="10" pageNumber="290">Differential diagnosis:</emphasis>
The genus
<taxonomicName id="4C634D0FFFAEFFFEFE25F9B7FDE1F9B0" authorityName="Costa" authorityYear="1998" box="[481,589,1596,1620]" class="Actinopterygii" family="Rivulidae" genus="Megalebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFE25F9B7FDE1F9B0" box="[481,589,1596,1620]" italics="true" pageId="10" pageNumber="290">Megalebias</emphasis>
</taxonomicName>
can be distinguished from all other genera of the
<taxonomicName id="4C634D0FFFAEFFFEFE3EF9D0FDDDF997" authorityName="Costa" authorityYear="1998" box="[506,625,1627,1651]" family="Rivulidae" genus="Austrolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFE3EF9D0FDDDF997" box="[506,625,1627,1651]" italics="true" pageId="10" pageNumber="290">Austrolebias</emphasis>
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genus group by having ≤ 40 scales in the longitudinal series (vs.&gt; 40 scales in
<taxonomicName id="4C634D0FFFAEFFFEFF4AF911FEAAF956" 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="[142,262,1690,1714]" family="Rivulidae" genus="Titanolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFF4AF911FEAAF956" box="[142,262,1690,1714]" italics="true" pageId="10" pageNumber="290">Titanolebias</emphasis>
</taxonomicName>
); by the presence of scales in the preopercular region (vs. absent in
<taxonomicName id="4C634D0FFFAEFFFEFE8FF932FE65F935" authorityName="Costa" authorityYear="2008" box="[331,457,1721,1745]" family="Rivulidae" genus="Gymnolebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFE8FF932FE65F935" box="[331,457,1721,1745]" italics="true" pageId="10" pageNumber="290">Gymnolebias</emphasis>
</taxonomicName>
); by the basal and medial region of pectoral fins non-hyaline in adult males (vs. hyaline in
<taxonomicName id="4C634D0FFFAEFFFEFFB5F973FF46F8F4" 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="[113,234,1784,1808]" family="Rivulidae" genus="Amatolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFFB5F973FF46F8F4" box="[113,234,1784,1808]" italics="true" pageId="10" pageNumber="290">Amatolebias</emphasis>
</taxonomicName>
,
<taxonomicName id="4C634D0FFFAEFFFEFF33F973FEC2F8F4" authorityName="Costa" authorityYear="1998" box="[247,366,1784,1808]" family="Rivulidae" genus="Austrolebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFF33F973FEC2F8F4" box="[247,366,1784,1808]" italics="true" pageId="10" pageNumber="290">Austrolebias</emphasis>
</taxonomicName>
and
<taxonomicName id="4C634D0FFFAEFFFEFE60F973FDB1F8F4" 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="[420,541,1784,1808]" family="Rivulidae" genus="Garcialebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFE60F973FDB1F8F4" box="[420,541,1784,1808]" italics="true" pageId="10" pageNumber="290">Garcialebias</emphasis>
</taxonomicName>
); by the lack of contact organs in the anal fin of males (vs. present in
<taxonomicName id="4C634D0FFFAEFFFEFDB6F89CFD56F8CB" authorityName="Costa" authorityYear="2008" box="[626,762,1815,1839]" family="Rivulidae" genus="Acantholebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFDB6F89CFD56F8CB" box="[626,762,1815,1839]" italics="true" pageId="10" pageNumber="290">Acantholebias</emphasis>
</taxonomicName>
and
<taxonomicName id="4C634D0FFFAEFFFEFF59F8BDFEBFF8AA" authorityName="Costa" authorityYear="2008" box="[157,275,1846,1870]" family="Rivulidae" genus="Cypholebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFF59F8BDFEBFF8AA" box="[157,275,1846,1870]" italics="true" pageId="10" pageNumber="290">Cypholebias</emphasis>
</taxonomicName>
); by the absence of vertical bars on the flanks of the males (vs. present in
<taxonomicName id="4C634D0FFFAEFFFEFEB5F8DDFE79F88A" authorityName="Costa" authorityYear="2008" box="[369,469,1878,1902]" family="Rivulidae" genus="Acrolebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFEB5F8DDFE79F88A" box="[369,469,1878,1902]" italics="true" pageId="10" pageNumber="290">Acrolebias</emphasis>
</taxonomicName>
); and by the posteriorly directed subocular bar, anterior region of head near rostral neuromasts without scales and conspicuous interspace between pelvic fins in males (vs. vertically to anteriorly directed bar, anterior region of head scaled and interspace between pelvic fins in males small or absent in
<taxonomicName id="4C634D0FFFAEFFFEFC26FF24FBEBFF23" authorityName="sensu Costa" authorityYear="2008" box="[994,1095,175,199]" family="Rivulidae" genus="Argolebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFC26FF24FBEBFF23" box="[994,1095,175,199]" italics="true" pageId="10" pageNumber="290">Argolebias</emphasis>
</taxonomicName>
and
<taxonomicName id="4C634D0FFFAEFFFEFBBCFF24FB72FF23" 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="[1144,1246,175,199]" family="Rivulidae" genus="Matilebias" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="genus">
<emphasis id="B917EA9EFFAEFFFEFBBCFF24FB72FF23" box="[1144,1246,175,199]" italics="true" pageId="10" pageNumber="290">Matilebias</emphasis>
</taxonomicName>
).
</paragraph>
<paragraph id="8BDC368CFFAEFFFEFC81FF44FA1CFE26" blockId="10.[810,1460,144,450]" pageId="10" pageNumber="290">It presents 133 genetic autapomorphies and the following morphologicalautapomorphies (seeSupportingInformation,Appendix S5): wide border of most scales on ventral half of flank, above anal fin, in dominant mature males (not considering bands, bars and iridescent lines) dark grey to black (3:0); centre of most scales on dorsal half of flank, anterior to dorsal fin, in dominant mature males (not considering bands, bars and iridescent lines) dark grey to black (11:1); and male pelvic fin bases separated by an interspace (57:0).</paragraph>
</subSubSection>
<subSubSection id="C3796507FFAEFFFEFCEEFE68FAE4FE1F" box="[810,1352,483,507]" pageId="10" pageNumber="290" type="taxon_list">
<paragraph id="8BDC368CFFAEFFFEFCEEFE68FAE4FE1F" blockId="10.[810,1352,483,507]" box="[810,1352,483,507]" pageId="10" pageNumber="290">
<emphasis id="B917EA9EFFAEFFFEFCEEFE68FC65FE1F" box="[810,969,483,507]" italics="true" pageId="10" pageNumber="290">Included species:</emphasis>
<taxonomicName id="4C634D0FFFAEFFFEFC0AFE68FAE8FE1F" authority="(Ahl, 1924)" baseAuthorityName="Ahl" baseAuthorityYear="1924" box="[974,1348,483,507]" class="Actinopterygii" family="Rivulidae" genus="Megalebias" higherTaxonomySource="GBIF" kingdom="Animalia" order="Cyprinodontiformes" pageId="10" pageNumber="290" phylum="Chordata" rank="species" species="wolterstorffi">Megalebias wolterstorffi (Ahl, 1924)</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="C3796507FFAEFFFEFCEEFD97FBF6FDB0" pageId="10" pageNumber="290" type="distribution">
<paragraph id="8BDC368CFFAEFFFEFCEEFD97FBF6FDB0" blockId="10.[810,1459,540,596]" pageId="10" pageNumber="290">
<emphasis id="B917EA9EFFAEFFFEFCEEFD97FC04FDD0" box="[810,936,540,564]" italics="true" pageId="10" pageNumber="290">Distribution:</emphasis>
Plains and wetlands of the Patos-Merín lagoon system in
<collectingCountry id="F374761CFFAEFFFEFC4BFDB7FC44FDB0" box="[911,1000,572,596]" name="Uruguay" pageId="10" pageNumber="290">Uruguay</collectingCountry>
and
<collectingCountry id="F374761CFFAEFFFEFBDCFDB7FBFAFDB0" box="[1048,1110,572,596]" name="Brazil" pageId="10" pageNumber="290">Brazil</collectingCountry>
.
</paragraph>
</subSubSection>
</treatment>
</document>