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<mods:title id="3F8E7354B14292A9D49EE9039B79F692">Diversity in the family Isodiametridae (Acoela): New species bring back old problems</mods:title>
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<mods:namePart id="76BE22B80CA5FDFCC0F7322F031185C8">Atherton, Sarah</mods:namePart>
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<mods:affiliation id="C8FC2AF7F3C6F078B297F705C8C23182">Department of Zoology, Naturhistoriska riksmuseet, Stockholm, Sweden &amp; sarah. atherton @ nrm. se; https: // orcid. org / 0000 - 0003 - 3024 - 472 X</mods:affiliation>
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<mods:affiliation id="B77010FF2C2C1D516556FA226F75130D">Department of Zoology, Naturhistoriska riksmuseet, Stockholm, Sweden &amp; Department of Zoology, Systematics and Evolution, Stockholm Universitet, Stockholm Sweden &amp; ulf. jondelius @ nrm. se; https: // orcid. ord / 0000 - 0003 - 2847 - 2192</mods:affiliation>
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<taxonomicName id="80C24D66E6298504FF6FFDCCFEACFDF4" ID-CoL="7NQDW" authorityName="ax" authorityYear="1959" box="[151,302,546,573]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FF6FFDCCFEACFDF4" bold="true" box="[151,302,546,573]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
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<paragraph id="477D36E5E6298504FF3FFDA9FCB3FCF0" blockId="18.[151,1437,546,1365]" pageId="18" pageNumber="419">
Soon after its establishment, the three species comprising
<taxonomicName id="80C24D66E6298504FC9EFDA9FBE7FDA8" authority="ax 1959" authorityName="ax" authorityYear="1959" box="[870,1125,582,609]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="404" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FC9EFDA9FC7AFDA8" box="[870,1016,583,609]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
<bibRefCitation id="23534B14E6298504FBF9FDA9FBE7FDA8" author="Ax, P." box="[1025,1125,582,609]" pageId="18" pageNumber="419" pagination="43 - 184" refId="ref14087" refString="Ax, P. (1959) Zur systematik, okologie und tiergeographie der turbellarienfauna in den ponto-kaspischen brackwassermeeren. Zoologische Jahrbucher Abteilung fur Systematik, Okologie und Geographie der Tiere, 87, 43 - 184." type="journal article" year="1959">
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1959
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</taxonomicName>
were split into two genera based on the presence or absence of bursal tissue (
<bibRefCitation id="23534B14E6298504FD22FD85FCE9FD4C" author="Dorjes, J." box="[730,875,619,645]" pageId="18" pageNumber="419" pagination="56 - 452" refId="ref14125" refString="Dorjes, J. (1968) Die Acoela (Turbellaria) der deutschen Nordseekuste und ein neues System der Ordnung. Journal of Zoological Systematics and Evolutionary Research, 6, 56 - 452. https: // doi. org / 10.1111 / j. 1439 - 0469.1968. tb 00431. x" type="journal article" year="1968">Dörjes 1968</bibRefCitation>
).
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<emphasis id="75B6EAF7E6298504FC79FD85FBCFFD4C" box="[897,1101,619,645]" italics="true" pageId="18" pageNumber="419">Archaphanostoma</emphasis>
<bibRefCitation id="23534B14E6298504FBAEFD85FB67FD4C" author="Dorjes, J." box="[1110,1253,619,645]" pageId="18" pageNumber="419" pagination="56 - 452" refId="ref14125" refString="Dorjes, J. (1968) Die Acoela (Turbellaria) der deutschen Nordseekuste und ein neues System der Ordnung. Journal of Zoological Systematics and Evolutionary Research, 6, 56 - 452. https: // doi. org / 10.1111 / j. 1439 - 0469.1968. tb 00431. x" type="journal article" year="1968">DöRJES 1968</bibRefCitation>
</taxonomicName>
was erected for those species that possessed an indistinct bursa without a muscular wall (i.e. bursal tissue) while the bursa-less
<taxonomicName id="80C24D66E6298504FF6FFD5DFDA5FD04" authority="DoRJES 1968" authorityName="DoRJES" authorityYear="1968" box="[151,551,691,717]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="kosswigi">
<emphasis id="75B6EAF7E6298504FF6FFD5DFE13FD04" box="[151,401,691,717]" italics="true" pageId="18" pageNumber="419">Baltalimania kosswigi</emphasis>
<bibRefCitation id="23534B14E6298504FE61FD5DFDA5FD04" author="Dorjes, J." box="[409,551,691,717]" pageId="18" pageNumber="419" pagination="56 - 452" refId="ref14125" refString="Dorjes, J. (1968) Die Acoela (Turbellaria) der deutschen Nordseekuste und ein neues System der Ordnung. Journal of Zoological Systematics and Evolutionary Research, 6, 56 - 452. https: // doi. org / 10.1111 / j. 1439 - 0469.1968. tb 00431. x" type="journal article" year="1968">DöRJES 1968</bibRefCitation>
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remained in a monotypic genus. Following a phylogenetic analysis of nucleotide sequences from three genes that resulted in species with and without bursas nesting together in a single clade,
<bibRefCitation id="23534B14E6298504FF6FFD15FE55FCDC" author="Atherton, S. &amp; Jondelius, U." box="[151,471,763,789]" pageId="18" pageNumber="419" pagination="736 - 760" refId="ref14035" refString="Atherton, S. &amp; Jondelius, U. (2021) Phylogenetic assessment and systematic revision of the acoel family Isodiametridae. Zoological Journal of the Linnean Society, 194 (3), 736 - 760. https: // doi. org / 10.1093 / zoolinnean / zlab 050" type="journal article" year="2021">Atherton &amp; Jondelius (2021)</bibRefCitation>
synonymized
<taxonomicName id="80C24D66E6298504FD81FD15FCC7FCDC" authorityName="DoRJES" authorityYear="1968" box="[633,837,763,789]" family="Isodiametridae" genus="Archaphanostoma" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FD81FD15FCC7FCDC" box="[633,837,763,789]" italics="true" pageId="18" pageNumber="419">Archaphanostoma</emphasis>
</taxonomicName>
and
<taxonomicName id="80C24D66E6298504FC82FD15FB8EFCDC" authorityName="ax" authorityYear="1959" box="[890,1036,763,789]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FC82FD15FB8EFCDC" box="[890,1036,763,789]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
</taxonomicName>
such that
<taxonomicName id="80C24D66E6298504FB85FD15FA8DFCDC" authorityName="ax" authorityYear="1959" box="[1149,1295,763,789]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FB85FD15FA8DFCDC" box="[1149,1295,763,789]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
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comprised a set of nine species, four with and five without bursal tissue.
</paragraph>
<paragraph id="477D36E5E6298504FF3FFCADFB47FC24" blockId="18.[151,1437,546,1365]" pageId="18" pageNumber="419">
With the addition of the four new species presented here, the results from our phylogenetic analyses reinforces the close relationships of species of
<taxonomicName id="80C24D66E6298504FDC1FC89FD49FC48" authorityName="ax" authorityYear="1959" box="[569,715,871,897]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FDC1FC89FD49FC48" box="[569,715,871,897]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
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with and without bursal tissue, and indicates that bursal tissue within
<taxonomicName id="80C24D66E6298504FF1FFC65FEFBFC6C" authorityName="ax" authorityYear="1959" box="[231,377,907,933]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FF1FFC65FEFBFC6C" box="[231,377,907,933]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
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was independently lost in at least two separate evolutionary lines (
<figureCitation id="DFF92A60E6298504FB81FC65FB58FC6C" box="[1145,1242,907,933]" captionStart="FIGURE 1" captionStartId="4.[151,250,1943,1967]" captionTargetBox="[232,1353,189,1906]" captionTargetId="figure-23@4.[226,1362,179,1918]" captionTargetPageId="4" captionText="FIGURE 1. Concatenated 18S and COI gene tree summary. Percent bootstrap values are given at each node. New species are highlighted in red." figureDoi="http://doi.org/10.5281/zenodo.6952714" httpUri="https://zenodo.org/record/6952714/files/figure.png" pageId="18" pageNumber="419">Figure 1</figureCitation>
). Our results are thus in accordance with the conclusions of previous studies (
<bibRefCitation id="23534B14E6298504FCC5FC41FBAAFC00" author="Jondelius, U. &amp; Wallberg, A. &amp; Hooge, M. &amp; Raikova, O." box="[829,1064,943,969]" pageId="18" pageNumber="419" pagination="845 - 871" refId="ref14861" refString="Jondelius, U., Wallberg, A., Hooge, M. &amp; Raikova, O. (2011) How the worm got its pharynx: phylogeny, classification and Bayesian assessment of character evolution in Acoela. Systematic Biology, 60, 845 - 871. https: // doi. org / 10.1093 / sysbio / syr 073" type="journal article" year="2011">
Jondelius
<emphasis id="75B6EAF7E6298504FC57FC41FC6AFC00" box="[943,1000,943,969]" italics="true" pageId="18" pageNumber="419">et al.</emphasis>
2011
</bibRefCitation>
;
<bibRefCitation id="23534B14E6298504FBCAFC41FAE1FC00" author="Atherton, S. &amp; Jondelius, U." box="[1074,1379,943,969]" pageId="18" pageNumber="419" pagination="736 - 760" refId="ref14035" refString="Atherton, S. &amp; Jondelius, U. (2021) Phylogenetic assessment and systematic revision of the acoel family Isodiametridae. Zoological Journal of the Linnean Society, 194 (3), 736 - 760. https: // doi. org / 10.1093 / zoolinnean / zlab 050" type="journal article" year="2021">Atherton &amp; Jondelius 2021</bibRefCitation>
) that found bursal tissue is not a good character with which to differentiate genera of
<taxonomicName id="80C24D66E6298504FBEEFC3DFB42FC24" authorityName="HOOGE &amp; TYLER" authorityYear="2005" box="[1046,1216,979,1005]" family="Isodiametridae" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="family">Isodiametridae</taxonomicName>
.
</paragraph>
<paragraph id="477D36E5E6298504FF3FFC19FC66FA9C" blockId="18.[151,1437,546,1365]" pageId="18" pageNumber="419">
Of note,
<taxonomicName id="80C24D66E6298504FED4FC19FE34FBD9" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[300,438,1015,1040]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="arcuatum" status="sp. nov.">
<emphasis id="75B6EAF7E6298504FED4FC19FE34FBD9" box="[300,438,1015,1040]" italics="true" pageId="18" pageNumber="419">B. arcuatum</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6298504FE46FC19FD9AFBD8" bold="true" box="[446,536,1015,1041]" pageId="18" pageNumber="419">
<taxonomicNameLabel id="6E85578CE6298504FE46FC19FD9AFBD8" box="[446,536,1015,1041]" pageId="18" pageNumber="419" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is only the second species of
<taxonomicName id="80C24D66E6298504FC94FC19FC7CFBD8" authorityName="ax" authorityYear="1959" box="[876,1022,1015,1041]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FC94FC19FC7CFBD8" box="[876,1022,1015,1041]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
</taxonomicName>
to possess a bursal nozzle, the other being
<taxonomicName id="80C24D66E6298504FF26FBF5FEDAFBFD" baseAuthorityName="Hooge &amp; Rocha" baseAuthorityYear="2006" box="[222,344,1051,1076]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="marcusi">
<emphasis id="75B6EAF7E6298504FF26FBF5FEDAFBFD" box="[222,344,1051,1076]" italics="true" pageId="18" pageNumber="419">B. marcusi</emphasis>
</taxonomicName>
(
<subScript id="DB4634A0E6298504FE93FBF5FE37FBFA" attach="left" box="[363,437,1051,1077]" fontSize="7" pageId="18" pageNumber="419">HooGE</subScript>
=&amp;=
<subScript id="DB4634A0E6298504FE25FBF5FDA5FBFB" attach="left" box="[477,551,1051,1077]" fontSize="7" pageId="18" pageNumber="419">RocHa</subScript>
2006). Unlike
<taxonomicName id="80C24D66E6298504FD2EFBF5FCD2FBFD" baseAuthorityName="Hooge &amp; Rocha" baseAuthorityYear="2006" box="[726,848,1051,1076]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="marcusi">
<emphasis id="75B6EAF7E6298504FD2EFBF5FCD2FBFD" box="[726,848,1051,1076]" italics="true" pageId="18" pageNumber="419">B. marcusi</emphasis>
</taxonomicName>
, the nozzle of
<taxonomicName id="80C24D66E6298504FC05FBF5FB0AFBFD" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[1021,1160,1051,1076]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="arcuatum">
<emphasis id="75B6EAF7E6298504FC05FBF5FB0AFBFD" box="[1021,1160,1051,1076]" italics="true" pageId="18" pageNumber="419">B. arcuatum</emphasis>
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appears as a single unit instead of of multiple disparate components that in theory function together along a single spermatic duct through which sperm pass on the way to the ovary (
<bibRefCitation id="23534B14E6298504FD73FB8DFCDCFBB4" author="Petrov, A. &amp; Hooge, M. &amp; Tyler, S." box="[651,862,1123,1149]" pageId="18" pageNumber="419" pagination="634 - 648" refId="ref15451" refString="Petrov, A., Hooge, M. &amp; Tyler, S. (2006) Comparative morphology of the bursal nozzles in acoels (Acoela, Acoelomorpha). Journal of Morphology, 267, 634 - 648. https: // doi. org / 10.1002 / jmor. 10428" type="journal article" year="2006">
Petrov
<emphasis id="75B6EAF7E6298504FD27FB8DFC9BFBB4" box="[735,793,1123,1149]" italics="true" pageId="18" pageNumber="419">et al.</emphasis>
2006
</bibRefCitation>
;
<bibRefCitation id="23534B14E6298504FC92FB8DFBDEFBB4" author="Hooge, M. &amp; Tyler, S." box="[874,1116,1123,1149]" pageId="18" pageNumber="419" pagination="7 - 36" refId="ref14505" refString="Hooge, M. &amp; Tyler, S. (2003) Acoels (Platyhelminthes, Acoela) from the Atlantic coast of North America. Meiofauna Marina, 12, 7 - 36." type="journal article" year="2003">Hooge &amp; Tyler 2003</bibRefCitation>
). As no DNA sequences are currently available for
<taxonomicName id="80C24D66E6298504FE6FFB69FD8DFB69" baseAuthorityName="Hooge &amp; Rocha" baseAuthorityYear="2006" box="[407,527,1159,1184]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="marcusi">
<emphasis id="75B6EAF7E6298504FE6FFB69FD8DFB69" box="[407,527,1159,1184]" italics="true" pageId="18" pageNumber="419">B. marcusi</emphasis>
</taxonomicName>
, it is not possible at this time to assess the homology of the nozzles by molecular phylogenetics, but the complete absence of bursal tissue as well as the presence of several different bursal
<typeStatus id="98798847E6298504FAD2FB45FAE7FB0C" box="[1322,1381,1195,1221]" pageId="18" pageNumber="419">types</typeStatus>
(e.g. indistinct without walls and unadorned, indistinct with a nozzle of a single unit, or indistinct with a nozzle of multiple disjoint units) within closely related species makes
<taxonomicName id="80C24D66E6298504FCF7FB1DFC23FAC4" authorityName="ax" authorityYear="1959" box="[783,929,1267,1293]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FCF7FB1DFC23FAC4" box="[783,929,1267,1293]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
</taxonomicName>
a particularly interesting candidate for future studies on bursal development. Further, as the bursa receives allosperm, there is potential for coevolution between it, the male copulatory organ, and sperm morphology among isodiametrids.
</paragraph>
<caption id="13BD666DE6298504FF6FFA6AFE79FA08" ID-Table-UUID="13BD666DE6298504FF6FFA6AFE79FA08" httpUri="http://table.plazi.org/id/13BD666DE6298504FF6FFA6AFE79FA08" pageId="18" pageNumber="419" startId="18.[151,239,1412,1436]" targetBox="[162,1405,1488,1898]" targetIsTable="true" targetPageId="18">
<paragraph id="477D36E5E6298504FF6FFA6AFE79FA08" blockId="18.[151,1436,1412,1473]" pageId="18" pageNumber="419">
<emphasis id="75B6EAF7E6298504FF6FFA6AFE8BFA55" bold="true" box="[151,265,1412,1436]" pageId="18" pageNumber="419">TABLE 2.</emphasis>
Selected morphological characters for new species of
<taxonomicName id="80C24D66E6298504FCB0FA6AFC51FA55" authorityName="ax" authorityYear="1959" box="[840,979,1412,1436]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FCB0FA6AFC51FA55" box="[840,979,1412,1436]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
</taxonomicName>
. This table can be used in conjunction with Table 1 of
<bibRefCitation id="23534B14E6298504FEF2FA46FE75FA08" author="Kanneby, T. &amp; Bernvi, D. &amp; Jondelius, U." box="[266,503,1448,1473]" pageId="18" pageNumber="419" pagination="218 - 231" refId="ref14967" refString="Kanneby, T., Bernvi, D. &amp; Jondelius, U. (2014) Distribution, delimitation and description of species of Aphanostoma (Acoela). Zoologica Scripta, 44, 218 - 231. https: // doi. org / 10.1111 / zsc. 12092" type="journal article" year="2014">
Kånneby
<emphasis id="75B6EAF7E6298504FE88FA47FE24FA09" box="[368,422,1448,1472]" italics="true" pageId="18" pageNumber="419">et al.</emphasis>
(2014)
</bibRefCitation>
.
</paragraph>
</caption>
<paragraph id="477D36E5E6298504FE10FA3FFADAF8A3" pageId="18" pageNumber="419">
<table id="35C2C445E6297AE9FF5AFA3EFAFFF8A3" box="[162,1405,1488,1898]" gridcols="5" gridrows="10" pageId="18" pageNumber="419">
<tr id="F9F234A7E6297AE9FF5AFA3EFAFFF9C5" box="[162,1405,1488,1548]" gridrow="0" pageId="18" pageNumber="419" rowspan-0="1">
<th id="BA235DDBE6297AE9FE10FA3EFD4DF9C5" box="[488,719,1488,1548]" gridcol="1" gridrow="0" pageId="18" pageNumber="419">
<taxonomicName id="80C24D66E6298504FE10FA3FFDFAFA21" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[488,632,1489,1512]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="asinariensis" status="sp. nov.">
<emphasis id="75B6EAF7E6298504FE10FA3FFDFAFA21" box="[488,632,1489,1512]" italics="true" pageId="18" pageNumber="419">B.asinariensis</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6298504FD86FA3EFD4DFA21" bold="true" box="[638,719,1488,1512]" pageId="18" pageNumber="419">
<taxonomicNameLabel id="6E85578CE6298504FD86FA3EFD4DFA21" box="[638,719,1488,1512]" pageId="18" pageNumber="419" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</th>
<th id="BA235DDBE6297AE9FD15FA3EFC39F9C5" box="[749,955,1488,1548]" gridcol="2" gridrow="0" pageId="18" pageNumber="419">
<taxonomicName id="80C24D66E6298504FD15FA3FFCE7FA21" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[749,869,1488,1512]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="salinsula" status="sp. nov.">
<emphasis id="75B6EAF7E6298504FD15FA3FFCE7FA21" box="[749,869,1488,1512]" italics="true" pageId="18" pageNumber="419">B. salinsula</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6298504FC93FA3EFC39FA21" bold="true" box="[875,955,1488,1512]" pageId="18" pageNumber="419">
<taxonomicNameLabel id="6E85578CE6298504FC93FA3EFC39FA21" box="[875,955,1488,1512]" pageId="18" pageNumber="419" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</th>
<th id="BA235DDBE6297AE9FC2FFA3EFB1CF9C5" box="[983,1182,1488,1548]" gridcol="3" gridrow="0" pageId="18" pageNumber="419">
<taxonomicName id="80C24D66E6298504FC2FFA3FFBFBFA21" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[983,1145,1489,1512]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="microcurvum" status="sp. nov.">
<emphasis id="75B6EAF7E6298504FC2FFA3FFBFBFA21" box="[983,1145,1489,1512]" italics="true" pageId="18" pageNumber="419">B. microcurvum</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6298504FB87FA3EFB81F9C5" bold="true" pageId="18" pageNumber="419">
<taxonomicNameLabel id="6E85578CE6298504FB87FA3EFB81F9C5" pageId="18" pageNumber="419" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</th>
<th id="BA235DDBE6297AE9FB24FA3EFAFFF9C5" box="[1244,1405,1488,1548]" gridcol="4" gridrow="0" pageId="18" pageNumber="419">
<taxonomicName id="80C24D66E6298504FB24FA3FFADAFA21" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[1244,1368,1489,1512]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="species" species="arcuatum" status="sp. nov.">
<emphasis id="75B6EAF7E6298504FB24FA3FFADAFA21" box="[1244,1368,1489,1512]" italics="true" pageId="18" pageNumber="419">B. arcuatum</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6298504FAA7FA3EFA8AF9C5" bold="true" pageId="18" pageNumber="419">
<taxonomicNameLabel id="6E85578CE6298504FAA7FA3EFA8AF9C5" pageId="18" pageNumber="419" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</th>
</tr>
<tr id="F9F234A7E6297AE9FF5AF9F5FAFFF9FA" box="[162,1405,1563,1587]" gridrow="1" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF9F5FEE3F9FA" box="[162,353,1563,1587]" gridcol="0" gridrow="1" pageId="18" pageNumber="419">Body length (mm)</th>
<td id="BA235DDBE6297AE9FE10F9F5FD4DF9FA" box="[488,719,1563,1587]" gridcol="1" gridrow="1" pageId="18" pageNumber="419">0.40.6</td>
<td id="BA235DDBE6297AE9FD15F9F5FC39F9FA" box="[749,955,1563,1587]" gridcol="2" gridrow="1" pageId="18" pageNumber="419">0.85</td>
<td id="BA235DDBE6297AE9FC2FF9F5FB1CF9FA" box="[983,1182,1563,1587]" gridcol="3" gridrow="1" pageId="18" pageNumber="419">0.50.7</td>
<td id="BA235DDBE6297AE9FB24F9F5FAFFF9FA" box="[1244,1405,1563,1587]" gridcol="4" gridrow="1" pageId="18" pageNumber="419">0.50.6</td>
</tr>
<tr id="F9F234A7E6297AE9FF5AF9ACFAFFF993" box="[162,1405,1602,1626]" gridrow="2" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF9ACFEE3F993" box="[162,353,1602,1626]" gridcol="0" gridrow="2" pageId="18" pageNumber="419">Body width (mm)</th>
<td id="BA235DDBE6297AE9FE10F9ACFD4DF993" box="[488,719,1602,1626]" gridcol="1" gridrow="2" pageId="18" pageNumber="419">0.12</td>
<td id="BA235DDBE6297AE9FD15F9ACFC39F993" box="[749,955,1602,1626]" gridcol="2" gridrow="2" pageId="18" pageNumber="419">0.18</td>
<td id="BA235DDBE6297AE9FC2FF9ACFB1CF993" box="[983,1182,1602,1626]" gridcol="3" gridrow="2" pageId="18" pageNumber="419">0.13</td>
<td id="BA235DDBE6297AE9FB24F9ACFAFFF993" box="[1244,1405,1602,1626]" gridcol="4" gridrow="2" pageId="18" pageNumber="419">0.08</td>
</tr>
<tr id="F9F234A7E6297AE9FF5AF987FAFFF948" box="[162,1405,1641,1665]" gridrow="3" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF987FEE3F948" box="[162,353,1641,1665]" gridcol="0" gridrow="3" pageId="18" pageNumber="419">Posterior vacuole</th>
<td id="BA235DDBE6297AE9FE10F987FD4DF948" box="[488,719,1641,1665]" gridcol="1" gridrow="3" pageId="18" pageNumber="419">Present</td>
<td id="BA235DDBE6297AE9FD15F987FC39F948" box="[749,955,1641,1665]" gridcol="2" gridrow="3" pageId="18" pageNumber="419">Absent</td>
<td id="BA235DDBE6297AE9FC2FF987FB1CF948" box="[983,1182,1641,1665]" gridcol="3" gridrow="3" pageId="18" pageNumber="419">Absent</td>
<td id="BA235DDBE6297AE9FB24F987FAFFF948" box="[1244,1405,1641,1665]" gridcol="4" gridrow="3" pageId="18" pageNumber="419">Present</td>
</tr>
<tr id="F9F234A7E6297AE9FF5AF97EFAFFF961" box="[162,1405,1680,1704]" gridrow="4" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF97EFEE3F961" box="[162,353,1680,1704]" gridcol="0" gridrow="4" pageId="18" pageNumber="419">Ovary</th>
<td id="BA235DDBE6297AE9FE10F97EFD4DF961" box="[488,719,1680,1704]" gridcol="1" gridrow="4" pageId="18" pageNumber="419">Paired</td>
<td id="BA235DDBE6297AE9FD15F97EFC39F961" box="[749,955,1680,1704]" gridcol="2" gridrow="4" pageId="18" pageNumber="419">Paired</td>
<td id="BA235DDBE6297AE9FC2FF97EFB1CF961" box="[983,1182,1680,1704]" gridcol="3" gridrow="4" pageId="18" pageNumber="419">Unpaired</td>
<td id="BA235DDBE6297AE9FB24F97EFAFFF961" box="[1244,1405,1680,1704]" gridcol="4" gridrow="4" pageId="18" pageNumber="419">Unpaired</td>
</tr>
<tr id="F9F234A7E6297AE9FF5AF958FAFFF906" box="[162,1405,1718,1743]" gridrow="5" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF958FEE3F906" box="[162,353,1718,1743]" gridcol="0" gridrow="5" pageId="18" pageNumber="419">Penis Length (µm)</th>
<td id="BA235DDBE6297AE9FE10F958FD4DF906" box="[488,719,1718,1743]" gridcol="1" gridrow="5" pageId="18" pageNumber="419">1720</td>
<td id="BA235DDBE6297AE9FD15F958FC39F906" box="[749,955,1718,1743]" gridcol="2" gridrow="5" pageId="18" pageNumber="419">27</td>
<td id="BA235DDBE6297AE9FC2FF958FB1CF906" box="[983,1182,1718,1743]" gridcol="3" gridrow="5" pageId="18" pageNumber="419">45</td>
<td id="BA235DDBE6297AE9FB24F958FAFFF906" box="[1244,1405,1718,1743]" gridcol="4" gridrow="5" pageId="18" pageNumber="419">3040</td>
</tr>
<tr id="F9F234A7E6297AE9FF5AF933FAFFF93F" box="[162,1405,1757,1782]" gridrow="6" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF933FEE3F93F" box="[162,353,1757,1782]" gridcol="0" gridrow="6" pageId="18" pageNumber="419">Antrum</th>
<td id="BA235DDBE6297AE9FE10F933FD4DF93F" box="[488,719,1757,1782]" gridcol="1" gridrow="6" pageId="18" pageNumber="419">Ciliated</td>
<td id="BA235DDBE6297AE9FD15F933FC39F93F" box="[749,955,1757,1782]" gridcol="2" gridrow="6" pageId="18" pageNumber="419">NA</td>
<td id="BA235DDBE6297AE9FC2FF933FB1CF93F" box="[983,1182,1757,1782]" gridcol="3" gridrow="6" pageId="18" pageNumber="419">Unciliated</td>
<td id="BA235DDBE6297AE9FB24F933FAFFF93F" box="[1244,1405,1757,1782]" gridcol="4" gridrow="6" pageId="18" pageNumber="419">Unciliated</td>
</tr>
<tr id="F9F234A7E6297AE9FF5AF8EAFAFFF8D5" box="[162,1405,1796,1820]" gridrow="7" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF8EAFEE3F8D5" box="[162,353,1796,1820]" gridcol="0" gridrow="7" pageId="18" pageNumber="419">Seminal Bursa</th>
<td id="BA235DDBE6297AE9FE10F8EAFD4DF8D5" box="[488,719,1796,1820]" gridcol="1" gridrow="7" pageId="18" pageNumber="419">Present</td>
<td id="BA235DDBE6297AE9FD15F8EAFC39F8D5" box="[749,955,1796,1820]" gridcol="2" gridrow="7" pageId="18" pageNumber="419">Absent</td>
<td id="BA235DDBE6297AE9FC2FF8EAFB1CF8D5" box="[983,1182,1796,1820]" gridcol="3" gridrow="7" pageId="18" pageNumber="419">Present</td>
<td id="BA235DDBE6297AE9FB24F8EAFAFFF8D5" box="[1244,1405,1796,1820]" gridcol="4" gridrow="7" pageId="18" pageNumber="419">Present</td>
</tr>
<tr id="F9F234A7E6297AE9FF5AF8C5FAFFF88A" box="[162,1405,1835,1859]" gridrow="8" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF8C5FEE3F88A" box="[162,353,1835,1859]" gridcol="0" gridrow="8" pageId="18" pageNumber="419">Bursal Nozzle</th>
<td id="BA235DDBE6297AE9FE10F8C5FD4DF88A" box="[488,719,1835,1859]" gridcol="1" gridrow="8" pageId="18" pageNumber="419">Absent</td>
<td id="BA235DDBE6297AE9FD15F8C5FC39F88A" box="[749,955,1835,1859]" gridcol="2" gridrow="8" pageId="18" pageNumber="419">Absent</td>
<td id="BA235DDBE6297AE9FC2FF8C5FB1CF88A" box="[983,1182,1835,1859]" gridcol="3" gridrow="8" pageId="18" pageNumber="419">Absent</td>
<td id="BA235DDBE6297AE9FB24F8C5FAFFF88A" box="[1244,1405,1835,1859]" gridcol="4" gridrow="8" pageId="18" pageNumber="419">Present</td>
</tr>
<tr id="F9F234A7E6297AE9FF5AF8BCFAFFF8A3" box="[162,1405,1874,1898]" gridrow="9" pageId="18" pageNumber="419">
<th id="BA235DDBE6297AE9FF5AF8BCFEE3F8A3" box="[162,353,1874,1898]" gridcol="0" gridrow="9" pageId="18" pageNumber="419">Gonopore</th>
<td id="BA235DDBE6297AE9FE10F8BCFD4DF8A3" box="[488,719,1874,1898]" gridcol="1" gridrow="9" pageId="18" pageNumber="419">Subterminal</td>
<td id="BA235DDBE6297AE9FD15F8BCFC39F8A3" box="[749,955,1874,1898]" gridcol="2" gridrow="9" pageId="18" pageNumber="419">Subterminal</td>
<td id="BA235DDBE6297AE9FC2FF8BCFB1CF8A3" box="[983,1182,1874,1898]" gridcol="3" gridrow="9" pageId="18" pageNumber="419">Subterminal</td>
<td id="BA235DDBE6297AE9FB24F8BCFAFFF8A3" box="[1244,1405,1874,1898]" gridcol="4" gridrow="9" pageId="18" pageNumber="419">Subterminal</td>
</tr>
</table>
</paragraph>
<paragraph id="477D36E5E6298505FF3FF877FAFDFF1C" blockId="18.[151,1437,1945,2044]" lastBlockId="19.[151,1437,151,285]" lastPageId="19" lastPageNumber="420" pageId="18" pageNumber="419">
Overall, the four new species of
<taxonomicName id="80C24D66E6298504FDD2F877FD3BF87A" authorityName="ax" authorityYear="1959" box="[554,697,1945,1971]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="18" pageNumber="419" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6298504FDD2F877FD3BF87A" box="[554,697,1945,1971]" italics="true" pageId="18" pageNumber="419">Baltalimania</emphasis>
</taxonomicName>
fit well with the other species of the genus, which are characterized primarily by the presence of a large, muscular seminal vesicle as well as by a bursa that is either absent or present but indistinct and without discernable walls. They also all have numerous lipid globules and rhabdoid glands in distinct longitudinal rows. The previous and new species of
<taxonomicName id="80C24D66E6288505FD2EFF79FCE7FF78" authorityName="ax" authorityYear="1959" box="[726,869,151,177]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6288505FD2EFF79FCE7FF78" box="[726,869,151,177]" italics="true" pageId="19" pageNumber="420">Baltalimania</emphasis>
</taxonomicName>
can all be relatively easily distinguished from each other based on a few morphological characters, summarized in
<tableCitation id="0A40035EE6288505FCB3FF55FC1EFF1C" box="[843,924,187,213]" captionStart="TABLE 2" captionStartId="18.[151,239,1412,1436]" captionTargetPageId="18" captionText="TABLE 2. Selected morphological characters for new species of Baltalimania. This table can be used in conjunction with Table 1 of Kånneby et al. (2014)." httpUri="http://table.plazi.org/id/13BD666DE6298504FF6FFA6AFE79FA08" pageId="19" pageNumber="420" tableUuid="13BD666DE6298504FF6FFA6AFE79FA08">Table 2</tableCitation>
as well as
<tableCitation id="0A40035EE6288505FBEBFF55FBE6FF1C" box="[1043,1124,187,213]" captionStart="TABLE 1" captionStartId="2.[151,239,151,175]" captionTargetBox="[162,1401,226,1724]" captionTargetPageId="2" captionText="TABLE 1. Specimen collection information and GenBank accession numbers. *indicates holotype specimen; **indicates" httpUri="http://table.plazi.org/id/13BD666DE6398514FF6FFF79FD97FF1A" pageId="19" pageNumber="420" tableUuid="13BD666DE6398514FF6FFF79FD97FF1A">Table 1</tableCitation>
of
<bibRefCitation id="23534B14E6288505FB70FF54FAF9FF1C" author="Kanneby, T. &amp; Bernvi, D. &amp; Jondelius, U." box="[1160,1403,186,213]" pageId="19" pageNumber="420" pagination="218 - 231" refId="ref14967" refString="Kanneby, T., Bernvi, D. &amp; Jondelius, U. (2014) Distribution, delimitation and description of species of Aphanostoma (Acoela). Zoologica Scripta, 44, 218 - 231. https: // doi. org / 10.1111 / zsc. 12092" type="journal article" year="2014">
Kånneby
<emphasis id="75B6EAF7E6288505FB09FF55FAAAFF1C" box="[1265,1320,187,213]" italics="true" pageId="19" pageNumber="420">et al.</emphasis>
(2014)
</bibRefCitation>
.
</paragraph>
</subSubSection>
<subSubSection id="0FD8656EE6288505FF3FFF31FE08FE48" pageId="19" pageNumber="420" type="multiple">
<paragraph id="477D36E5E6288505FF3FFF31FEFFFED4" blockId="19.[151,1437,151,285]" pageId="19" pageNumber="420">
A key to the genus is presented below. With the inclusion of the four new species,
<taxonomicName id="80C24D66E6288505FBA3FF31FB6FFF30" authorityName="ax" authorityYear="1959" box="[1115,1261,223,249]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6288505FBA3FF31FB6FFF30" box="[1115,1261,223,249]" italics="true" pageId="19" pageNumber="420">Baltalimania</emphasis>
</taxonomicName>
now comprises a total of 13 species.
</paragraph>
<paragraph id="477D36E5E6288505FF6FFE89FE08FE48" blockId="19.[151,394,359,385]" box="[151,394,359,385]" pageId="19" pageNumber="420">
<emphasis id="75B6EAF7E6288505FF6FFE89FF6BFE48" bold="true" box="[151,233,359,385]" pageId="19" pageNumber="420">Key to</emphasis>
<taxonomicName id="80C24D66E6288505FF09FE89FE08FE48" authorityName="ax" authorityYear="1959" box="[241,394,359,385]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="genus">
<emphasis id="75B6EAF7E6288505FF09FE89FE08FE48" box="[241,394,359,385]" italics="true" pageId="19" pageNumber="420">Baltalimania</emphasis>
</taxonomicName>
</paragraph>
</subSubSection>
<subSubSection id="0FD8656EE6288505FF6FFE42FA1EFADA" pageId="19" pageNumber="420" type="key">
<key id="335361D4E6288505FF6FFE42FA1EFADA" pageId="19" pageNumber="420">
<keyStep id="FC362E40E6288505FF6FFE42FA1EFE17" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFE42FA1EFE08" blockId="19.[151,1436,428,1300]" box="[151,1436,428,450]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFE42FA1EFE08" box="[151,1436,428,450]" pageId="19" pageNumber="420">1. Bursal tissue present................................................................................... 2</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFE27FA1EFE17" blockId="19.[151,1436,428,1300]" box="[151,1436,457,479]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFE27FA1EFE17" box="[151,1436,457,479]" pageId="19" pageNumber="420">- Bursal tissue absent................................................................................... 8</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFE08FA1EFDD3" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFE08FA1EFE32" blockId="19.[151,1436,428,1300]" box="[151,1436,486,508]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFE08FA1EFE32" box="[151,1436,486,508]" pageId="19" pageNumber="420">2. Ovary unpaired....................................................................................... 3</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFDEAFA1EFDD3" blockId="19.[151,1436,428,1300]" box="[151,1436,516,538]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFDEAFA1EFDD3" box="[151,1436,516,538]" pageId="19" pageNumber="420">- Ovaries paired........................................................................................ 6</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFDCFFA1EFD9D" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFDCFFA1EFDFF" blockId="19.[151,1436,428,1300]" box="[151,1436,545,567]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFDCFFA1EFDFF" box="[151,1436,545,567]" pageId="19" pageNumber="420">3. Bursa with nozzle..................................................................................... 4</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFDD1FA1EFD9D" blockId="19.[151,1436,428,1300]" box="[151,1436,574,596]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFDD1FA1EFD9D" box="[151,1436,574,596]" pageId="19" pageNumber="420">- Bursa unadorned...................................................................................... 5</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFDB2FA1EFD00" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFDB2FA1EFD46" blockId="19.[151,1436,428,1300]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFDB2FA1EFD46" pageId="19" pageNumber="420">
4. Bursal nozzle roughly S shaped; penis very short, ~13 µm; antrum masculinum and posterior vacuole absent......................................................................................
<taxonomicName id="80C24D66E6288505FBB3FD94FB30FD46" ID-CoL="8VNT4" baseAuthorityName="Hooge &amp; Rocha" baseAuthorityYear="2006" box="[1099,1202,634,655]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="marcusi">
<emphasis id="75B6EAF7E6288505FBB3FD94FB30FD46" box="[1099,1202,634,655]" italics="true" pageId="19" pageNumber="420">B. marcusi</emphasis>
</taxonomicName>
(HooGE=&amp;=
<subScript id="DB4634A0E6288505FAE7FD97FADDFD44" attach="left" box="[1311,1375,633,654]" fontSize="6" pageId="19" pageNumber="420">RocHa</subScript>
=2006)
</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFD79FA1EFD00" blockId="19.[151,1436,428,1300]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFD79FA1EFD00" pageId="19" pageNumber="420">
- Bursal nozzle arched; penis 3040 µm partially extending into an unciliated antrum masculinum; posterior vacuole present.....................................................................................
<taxonomicName id="80C24D66E6288505FB2CFD5AFACBFD00" ID-CoL="a3d3c74f-24f3-4280-82a1-e0b0a89229e3" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[1236,1353,692,713]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="arcuatum" status="sp. nov.">
<emphasis id="75B6EAF7E6288505FB2CFD5AFACBFD00" box="[1236,1353,692,713]" italics="true" pageId="19" pageNumber="420">B. arcuatum</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6288505FAA8FD5AFA1EFD00" bold="true" box="[1360,1436,692,713]" pageId="19" pageNumber="420">
<taxonomicNameLabel id="6E85578CE6288505FAA8FD5AFA1EFD00" box="[1360,1436,692,713]" pageId="19" pageNumber="420" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFD3FFA1EFCCA" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFD3FFA1EFD2E" blockId="19.[151,1436,428,1300]" box="[151,1436,721,743]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFD3FFA1EFD2E" box="[151,1436,721,743]" pageId="19" pageNumber="420">
5. Penis large, 150300 µm, partially extending into a large, ciliated male antrum........
<taxonomicName id="80C24D66E6288505FBBDFD3CFB7DFD2F" ID-CoL="8S3HP" baseAuthorityName="Westblad" baseAuthorityYear="1946" box="[1093,1279,721,743]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="macrospiriferum">
<emphasis id="75B6EAF7E6288505FBBDFD3CFB7DFD2F" box="[1093,1279,721,743]" italics="true" pageId="19" pageNumber="420">B. macrospiriferum</emphasis>
</taxonomicName>
WESTbLaD=1946
</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFD01FA1EFCCA" blockId="19.[151,1436,428,1300]" box="[151,1436,750,772]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFD01FA1EFCCA" box="[151,1436,750,772]" pageId="19" pageNumber="420">
- Penis small, ~45 µm, partially extending into a small unciliated antrum masculinum.............
<taxonomicName id="80C24D66E6288505FB48FD01FACBFCCD" ID-CoL="ca71facd-e6dd-4924-b2b2-eff2f116e0d8" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[1200,1353,751,772]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="microcurvum" status="sp. nov.">
<emphasis id="75B6EAF7E6288505FB48FD01FACBFCCD" box="[1200,1353,751,772]" italics="true" pageId="19" pageNumber="420">B. microcurvum</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6288505FAA8FD00FA1EFCCA" bold="true" box="[1360,1436,750,771]" pageId="19" pageNumber="420">
<taxonomicNameLabel id="6E85578CE6288505FAA8FD00FA1EFCCA" box="[1360,1436,750,771]" pageId="19" pageNumber="420" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFCE2FA1EFCF7" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFCE2FA1EFCE8" blockId="19.[151,1436,428,1300]" box="[151,1436,780,802]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFCE2FA1EFCE8" box="[151,1436,780,802]" pageId="19" pageNumber="420">
6. Animal ~
<quantity id="803A9B00E6288505FEC7FCE2FEF6FCE8" box="[319,372,780,801]" metricMagnitude="-3" metricUnit="m" metricValue="1.0" pageId="19" pageNumber="420" unit="mm" value="1.0">1 mm</quantity>
in body length; penis large, 200 µm or longer.................................................. 7
</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFCC7FA1EFCF7" blockId="19.[151,1436,428,1300]" box="[151,1436,809,831]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFCC7FA1EFCF7" box="[151,1436,809,831]" pageId="19" pageNumber="420">
- Animal
<quantity id="803A9B00E6288505FEC8FCC7FE21FCF7" box="[304,419,809,831]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" metricValueMax="6.0" metricValueMin="4.0" pageId="19" pageNumber="420" unit="mm" value="0.5" valueMax="0.6" valueMin="0.4">0.40.6 mm</quantity>
in body length; penis small, 1720 µm..................................
<taxonomicName id="80C24D66E6288505FB43FCC4FACBFCF6" ID-CoL="04e81247-4805-442e-9a67-419c9a7ad2f1" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[1211,1353,810,831]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="asinariensis" status="sp. nov.">
<emphasis id="75B6EAF7E6288505FB43FCC4FACBFCF6" box="[1211,1353,810,831]" italics="true" pageId="19" pageNumber="420">B. asinariensis</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6288505FAA8FCC7FA1EFCF7" bold="true" box="[1360,1436,809,830]" pageId="19" pageNumber="420">
<taxonomicNameLabel id="6E85578CE6288505FAA8FCC7FA1EFCF7" box="[1360,1436,809,830]" pageId="19" pageNumber="420" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFCA9FA1EFCB3" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFCA9FA1EFC92" blockId="19.[151,1436,428,1300]" box="[151,1436,838,860]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFCA9FA1EFC92" box="[151,1436,838,860]" pageId="19" pageNumber="420">
7. Antrum masculinum ciliated.............................................................
<taxonomicName id="80C24D66E6288505FB2EFCA9FAE4FC93" ID-CoL="8S3HN" authority="JENSEN" authorityName="JENSEN" box="[1238,1382,838,860]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="agile">
<emphasis id="75B6EAF7E6288505FB2EFCA9FAA3FC92" box="[1238,1313,838,860]" italics="true" pageId="19" pageNumber="420">B. agile</emphasis>
JENSEN
</taxonomicName>
=1878
</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFC8AFA1EFCB3" blockId="19.[151,1436,428,1300]" box="[151,1436,868,890]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFC8AFA1EFCB3" box="[151,1436,868,890]" pageId="19" pageNumber="420">
- Antrum masculinum unciliated.................................................
<taxonomicName id="80C24D66E6288505FB9BFC8AFA8FFCB0" ID-CoL="8VNSM" baseAuthorityName="Dörjes" baseAuthorityYear="1968" box="[1123,1293,868,889]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="histobursalium">
<emphasis id="75B6EAF7E6288505FB9BFC8AFA8FFCB0" box="[1123,1293,868,889]" italics="true" pageId="19" pageNumber="420">B. histobursalium</emphasis>
</taxonomicName>
(DöRJES=1968)
</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFC6FFA1EFC7A" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFC6FFA1EFC5F" blockId="19.[151,1436,428,1300]" box="[151,1436,897,919]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFC6FFA1EFC5F" box="[151,1436,897,919]" pageId="19" pageNumber="420">8. Ovary unpaired....................................................................................... 9</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFC71FA1EFC7A" blockId="19.[151,1436,428,1300]" box="[151,1436,926,948]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFC71FA1EFC7A" box="[151,1436,926,948]" pageId="19" pageNumber="420">- Ovaries paired....................................................................................... 12</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFC52FA1EFC27" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFC52FA1EFC18" blockId="19.[151,1436,428,1300]" box="[151,1436,956,978]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFC52FA1EFC18" box="[151,1436,956,978]" pageId="19" pageNumber="420">9. Posterior vacuole present.............................................................................. 10</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFC37FA1EFC27" blockId="19.[151,1436,428,1300]" box="[151,1436,985,1007]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFC37FA1EFC27" box="[151,1436,985,1007]" pageId="19" pageNumber="420">- Posterior vacuole absent............................................................................... 11</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFC18FA1EFBE0" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFC18FA1EFBC2" blockId="19.[151,1436,428,1300]" box="[151,1436,1014,1036]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFC18FA1EFBC2" box="[151,1436,1014,1036]" pageId="19" pageNumber="420">
10. Penis 5560 µm; anteriolateral vacuoles present....................................
<taxonomicName id="80C24D66E6288505FBA6FC19FB42FBC2" ID-CoL="8VNTH" baseAuthorityName="Kånneby, Bernvi &amp; Jondelius" baseAuthorityYear="2015" box="[1118,1216,1014,1036]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="occulta">
<emphasis id="75B6EAF7E6288505FBA6FC19FB42FBC2" box="[1118,1216,1014,1036]" italics="true" pageId="19" pageNumber="420">B. occulta</emphasis>
</taxonomicName>
(kåNNEbY=
<emphasis id="75B6EAF7E6288505FAD3FC12FAD7FBC3" box="[1323,1365,1020,1034]" italics="true" pageId="19" pageNumber="420">
<subScript id="DB4634A0E6288505FAD3FC12FAD7FBC3" attach="left" box="[1323,1365,1020,1034]" fontSize="6" pageId="19" pageNumber="420">bt a¡</subScript>
</emphasis>
.=2014)
</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFBFAFA1EFBE0" blockId="19.[151,1436,428,1300]" box="[151,1436,1043,1066]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFBFAFA1EFBE0" box="[151,1436,1043,1066]" pageId="19" pageNumber="420">
- Penis 3050 µm; anteriolateral vacuoles absent......................................
<taxonomicName id="80C24D66E6288505FB8AFBFAFB42FBE0" ID-CoL="8VNTN" baseAuthorityName="Kånneby, Bernvi &amp; Jondelius" baseAuthorityYear="2015" box="[1138,1216,1044,1065]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="ylvae">
<emphasis id="75B6EAF7E6288505FB8AFBFAFB42FBE0" box="[1138,1216,1044,1065]" italics="true" pageId="19" pageNumber="420">B. ylvae</emphasis>
</taxonomicName>
(kåNNEbY=
<emphasis id="75B6EAF7E6288505FAD3FBF7FAD7FBEE" box="[1323,1365,1049,1063]" italics="true" pageId="19" pageNumber="420">bt a¡</emphasis>
.=2014)
</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFBDFFA1EFB57" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFBDFFA1EFBAA" blockId="19.[151,1436,428,1300]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFBDFFA1EFBAA" pageId="19" pageNumber="420">
11. Body length ~
<quantity id="803A9B00E6288505FE93FBDFFE35FB8F" box="[363,439,1073,1094]" metricMagnitude="-3" metricUnit="m" metricValue="1.7" pageId="19" pageNumber="420" unit="mm" value="1.7">1.7 mm</quantity>
; penis 8090 µm, partially extending into a ciliated antrum masculinum; gonopore terminal...............................................................................
<taxonomicName id="80C24D66E6288505FBC9FBA1FB42FBAA" ID-CoL="8VNSB" baseAuthorityName="Kånneby, Bernvi &amp; Jondelius" baseAuthorityYear="2015" box="[1073,1216,1102,1124]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="sublittoralis">
<emphasis id="75B6EAF7E6288505FBC9FBA1FB42FBAA" box="[1073,1216,1102,1124]" italics="true" pageId="19" pageNumber="420">B. sublittoralis</emphasis>
</taxonomicName>
(kåNNEbY=
<emphasis id="75B6EAF7E6288505FAD3FBBAFADCFBAD" box="[1323,1374,1103,1124]" italics="true" pageId="19" pageNumber="420">
<subScript id="DB4634A0E6288505FAD3FBBAFAD7FBAB" attach="left" box="[1323,1365,1108,1122]" fontSize="6" pageId="19" pageNumber="420">bt a¡</subScript>
K
</emphasis>
=2014)
</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFB82FA1EFB57" blockId="19.[151,1436,428,1300]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFB82FA1EFB57" pageId="19" pageNumber="420">
- Body length
<quantity id="803A9B00E6288505FEA6FB82FE56FB48" box="[350,468,1132,1153]" metricMagnitude="-4" metricUnit="m" metricValue="6.5" metricValueMax="9.0" metricValueMin="4.0" pageId="19" pageNumber="420" unit="mm" value="0.65" valueMax="0.9" valueMin="0.4">0.40.9 mm</quantity>
; penis 2540 µm, partially extending into an unciliated antrum masculinum; gonopore subterminal.........................................................................
<taxonomicName id="80C24D66E6288505FBA8FB64FB3DFB57" ID-CoL="8VNTZ" baseAuthorityName="Kånneby, Bernvi &amp; Jondelius" baseAuthorityYear="2015" box="[1104,1215,1161,1183]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="fontaneti">
<emphasis id="75B6EAF7E6288505FBA8FB64FB3DFB57" box="[1104,1215,1161,1183]" italics="true" pageId="19" pageNumber="420">B. fontaneti</emphasis>
</taxonomicName>
(kåNNEbY=
<emphasis id="75B6EAF7E6288505FAD3FB60FAE6FB56" box="[1323,1380,1162,1183]" italics="true" pageId="19" pageNumber="420">
bt
<subScript id="DB4634A0E6288505FABDFB61FAD7FB54" attach="right" box="[1349,1365,1167,1181]" fontSize="6" pageId="19" pageNumber="420"></subScript>
K
</emphasis>
2014)
</keyLead>
</paragraph>
</keyStep>
<keyStep id="FC362E40E6288505FF6FFB48FA1EFADA" pageId="19" pageNumber="420">
<paragraph id="477D36E5E6288505FF6FFB48FA1EFB10" blockId="19.[151,1436,428,1300]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFB48FA1EFB10" pageId="19" pageNumber="420">
12. Body length
<quantity id="803A9B00E6288505FEA5FB48FE43FB75" box="[349,449,1190,1212]" metricMagnitude="-3" metricUnit="m" metricValue="1.15" metricValueMax="1.3" metricValueMin="1.0" pageId="19" pageNumber="420" unit="mm" value="1.15" valueMax="1.3" valueMin="1.0">11.3 mm</quantity>
; frontal organ well-developed; vacuoles present; male organ located ~⅓ body length from the posterior end.................................................................................
<taxonomicName id="80C24D66E6288505FB2DFB2AFAC1FB10" ID-CoL="KJ6D" authorityName="DoRJES" authorityYear="1968" box="[1237,1347,1220,1241]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="kosswigi">
<emphasis id="75B6EAF7E6288505FB2DFB2AFAC1FB10" box="[1237,1347,1220,1241]" italics="true" pageId="19" pageNumber="420">B. kosswigi</emphasis>
</taxonomicName>
<bibRefCitation id="23534B14E6288505FAB1FB2AFA1EFB10" author="Ax, P." box="[1353,1436,1219,1241]" pageId="19" pageNumber="420" pagination="43 - 184" refId="ref14087" refString="Ax, P. (1959) Zur systematik, okologie und tiergeographie der turbellarienfauna in den ponto-kaspischen brackwassermeeren. Zoologische Jahrbucher Abteilung fur Systematik, Okologie und Geographie der Tiere, 87, 43 - 184." type="journal article" year="1959">ax 1959</bibRefCitation>
</keyLead>
</paragraph>
<paragraph id="477D36E5E6288505FF6FFB0FFA1EFADA" blockId="19.[151,1436,428,1300]" pageId="19" pageNumber="420">
<keyLead id="FC3395D0E6288505FF6FFB0FFA1EFADA" pageId="19" pageNumber="420">
- Body length
<quantity id="803A9B00E6288505FEA6FB0FFE34FB3F" box="[350,438,1249,1271]" metricMagnitude="-4" metricUnit="m" metricValue="8.5" pageId="19" pageNumber="420" unit="mm" value="0.85">0.85 mm</quantity>
; frontal organ small; vacuoles absent; male organ located close to the posterior end....................................................................................................
<taxonomicName id="80C24D66E6288505FB20FB11FAC8FADA" ID-CoL="450239c6-91e0-4f3e-b71a-00859df62097" authority="Atherton &amp; Jondelius, 2022" authorityName="Atherton &amp; Jondelius" authorityYear="2022" box="[1240,1354,1278,1300]" family="Isodiametridae" genus="Baltalimania" kingdom="Animalia" order="Acoela" pageId="19" pageNumber="420" phylum="Xenacoelomorpha" rank="species" species="salinsula" status="sp. nov.">
<emphasis id="75B6EAF7E6288505FB20FB11FAC8FADA" box="[1240,1354,1278,1300]" italics="true" pageId="19" pageNumber="420">B. salinsula</emphasis>
</taxonomicName>
<emphasis id="75B6EAF7E6288505FAA8FB10FA1EFADA" bold="true" box="[1360,1436,1278,1299]" pageId="19" pageNumber="420">
<taxonomicNameLabel id="6E85578CE6288505FAA8FB10FA1EFADA" box="[1360,1436,1278,1299]" pageId="19" pageNumber="420" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</keyLead>
</paragraph>
</keyStep>
</key>
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</treatment>
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