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<document id="CD31A78EDF2C11085445F4696598E195" ID-DOI="10.11646/zootaxa.3669.3.3" ID-GBIF-Dataset="fb4137ff-e566-4f5a-9bbe-c37a5d05edca" ID-ISSN="1175-5326" ID-Zenodo-Dep="218347" ID-ZooBank="4B030568-F2BE-44A4-944F-8017BB60833A" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460631949495" checkinUser="plazi" docAuthor="Álvarez-Ortega, Sergio &amp; Peña-Santiago, Reyes" docDate="2013" docId="583A87D6FFF3E448FF0C738D0479B7E9" docLanguage="en" docName="zt03669p260.pdf" docOrigin="Zootaxa 3669 (3)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Aporcelaimellus Heyns 1965" docType="treatment" docVersion="7" lastPageNumber="244" masterDocId="A403FFAEFFF2E449FF9B73500673B258" masterDocTitle="Taxonomy of the genus Aporcelaimellus Heyns, 1965 (Nematoda, Dorylaimida, Aporcelaimidae)" masterLastPageNumber="260" masterPageNumber="243" pageNumber="244" updateTime="1698334513299" updateUser="plazi">
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<mods:title id="1C3E33CB53EE5DBE8F5D5EBDFABF5B13">Taxonomy of the genus Aporcelaimellus Heyns, 1965 (Nematoda, Dorylaimida, Aporcelaimidae)</mods:title>
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<mods:namePart id="EDC10661F2110F592BA3CDDADB689709">Álvarez-Ortega, Sergio</mods:namePart>
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<mods:title id="DFF653A2F9449A1C79E29692B847F0A0">Zootaxa</mods:title>
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<mods:date id="4DD20408B05B4021072F6668BD2F9E1B">2013</mods:date>
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<mods:number id="9AB2B65760B7CE0B7C9BBC329AD8195A">3669</mods:number>
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<mods:identifier id="236AE775FB852A7BFD23EF130608D57F" type="DOI">10.11646/zootaxa.3669.3.3</mods:identifier>
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<treatment id="583A87D6FFF3E448FF0C738D0479B7E9" ID-DOI="http://doi.org/10.5281/zenodo.6149489" ID-GBIF-Taxon="119569783" ID-Zenodo-Dep="6149489" LSID="urn:lsid:plazi:treatment:583A87D6FFF3E448FF0C738D0479B7E9" httpUri="http://treatment.plazi.org/id/583A87D6FFF3E448FF0C738D0479B7E9" lastPageNumber="244" pageId="1" pageNumber="244">
<subSubSection id="9889654BFFF3E448FF0C738D07A3B36C" pageId="1" pageNumber="244" type="nomenclature">
<paragraph id="D02C36C0FFF3E448FF0C738D0422B2AF" blockId="1.[151,593,221,247]" box="[151,593,221,247]" pageId="1" pageNumber="244">
<heading id="8B6481ACFFF3E448FF0C738D0422B2AF" bold="true" box="[151,593,221,247]" fontSize="11" level="1" pageId="1" pageNumber="244" reason="1">
<emphasis id="E2E7EAD2FFF3E448FF0C738D0422B2AF" bold="true" box="[151,593,221,247]" pageId="1" pageNumber="244">
Genus
<taxonomicName id="17934D43FFF3E448FF75738D0422B2AF" authority="Heyns, 1965" authorityName="Heyns" authorityYear="1965" box="[238,593,221,247]" class="Adenophorea" family="Aporcelaimidae" genus="Aporcelaimellus" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FF75738D07C0B2AF" bold="true" box="[238,435,221,247]" italics="true" pageId="1" pageNumber="244">Aporcelaimellus</emphasis>
Heyns, 1965
</taxonomicName>
</emphasis>
</heading>
</paragraph>
<paragraph id="D02C36C0FFF3E448FF0C724F07A3B36C" blockId="1.[151,464,286,309]" box="[151,464,286,309]" pageId="1" pageNumber="244">
Syn.
<taxonomicName id="17934D43FFF3E448FF50724F07A3B36C" authority="Yeates, 1967" authorityName="Yeates" authorityYear="1967" box="[203,464,286,309]" class="Adenophorea" family="Aporcelaimidae" genus="Takamangai" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FF50724F0734B36D" box="[203,327,287,309]" italics="true" pageId="1" pageNumber="244">Takamangai</emphasis>
Yeates, 1967
</taxonomicName>
</paragraph>
</subSubSection>
<subSubSection id="9889654BFFF3E448FF0C72300722B6A5" pageId="1" pageNumber="244" type="diagnosis">
<paragraph id="D02C36C0FFF3E448FF0C7230032DB171" blockId="1.[151,1437,352,1457]" pageId="1" pageNumber="244">
<emphasis id="E2E7EAD2FFF3E448FF0C723007E6B321" bold="true" box="[151,405,352,377]" pageId="1" pageNumber="244">Diagnosis (emended).</emphasis>
<taxonomicName id="17934D43FFF3E448FE0772310420B321" box="[412,595,353,377]" class="Adenophorea" family="Aporcelaimidae" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="family">Aporcelaimidae</taxonomicName>
. Obese to slender nematodes (
<emphasis id="E2E7EAD2FFF3E448FC3E723205C0B321" box="[933,947,354,377]" italics="true" pageId="1" pageNumber="244">a</emphasis>
= 18–39), exceptionally very slender (up to 50), of medium to large size,
<quantity id="176B9B25FFF3E448FE7872D504F5B3C5" box="[483,646,389,413]" metricMagnitude="-3" metricUnit="m" metricValue="2.635" metricValueMax="4.07" metricValueMin="1.2" pageId="1" pageNumber="244" unit="mm" value="2.635" valueMax="4.07" valueMin="1.2">1.20–4.07 mm</quantity>
long. Cuticle three-layered, especially obvious at caudal region: inner layer with radial striation and more refringent and thicker than intermediate and outer layers; hyaline space usually present between inner and intermediate layers at terminal portion of tail. Cervical lacunae often present and well developed. Oral aperture a dorso-ventral, hexagonal open slit. Lip region offset by a more or less distinct constriction; lips mostly amalgamated, the lateral ones more offset from the corresponding subdorsal and subventral ones than the subdorsal and the subventral ones between them, resulting in a bilateral symmetry. Odontostyle short, robust and with wide aperture, always occupying more than one-half its length. Guiding ring simple and plicate. Odontophore rod-like. Pharynx enlarging gradually, with basal expansion occupying about onehalf of total neck length. Female genital system didelphic-amphidelphic: uterus simple, bi- or tripartite;
<emphasis id="E2E7EAD2FFF3E448FAF171F6071AB0B9" italics="true" pageId="1" pageNumber="244">pars refringens vaginae</emphasis>
present, well developed; and vulva a transverse slit. Tail similar in both sexes, short, rounded to conical with more or less rounded terminus. Spicules dorylaimoid, well developed. Ventromedian supplements
<quantity id="176B9B25FFF3E448FA1B71BE06A3B171" metricMagnitude="-1" metricUnit="m" metricValue="4.064" metricValueMax="6.35" metricValueMin="1.778" pageId="1" pageNumber="244" unit="in" value="16.0" valueMax="25.0" valueMin="7.0">7– 25 in</quantity>
number, separated, almost always with pre-cloacal space (hiatus), which is lacking in only four species.
</paragraph>
<paragraph id="D02C36C0FFF3E448FF5C70650722B6A5" blockId="1.[151,1437,352,1457]" pageId="1" pageNumber="244">
<emphasis id="E2E7EAD2FFF3E448FF5C70650703B116" bold="true" box="[199,368,821,846]" pageId="1" pageNumber="244">Relationships.</emphasis>
<taxonomicName id="17934D43FFF3E448FEE270650443B115" box="[377,560,821,845]" class="Adenophorea" family="Aporcelaimidae" genus="Aporcelaimellus" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FEE270650443B115" box="[377,560,821,845]" italics="true" pageId="1" pageNumber="244">Aporcelaimellus</emphasis>
</taxonomicName>
is morphologically very close to the genera
<taxonomicName id="17934D43FFF3E448FBAA706502EDB115" box="[1073,1182,821,845]" class="Adenophorea" family="Aporcelaimidae" genus="Aporcella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FBAA706502EDB115" box="[1073,1182,821,845]" italics="true" pageId="1" pageNumber="244">Aporcella</emphasis>
</taxonomicName>
and
<taxonomicName id="17934D43FFF3E448FB42706503EFB115" box="[1241,1436,821,845]" class="Adenophorea" family="Aporcelaimidae" genus="Metaporcelaimus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FB42706503EFB115" box="[1241,1436,821,845]" italics="true" pageId="1" pageNumber="244">Metaporcelaimus</emphasis>
</taxonomicName>
(Álvarez-Ortega
<emphasis id="E2E7EAD2FFF3E448FEC3700A07FEB129" box="[344,397,857,881]" italics="true" pageId="1" pageNumber="244">et al</emphasis>
., 2013a, b), the three genera having in common some remarkable morphological features such as the nature of the odontostyle (short, robust and with large aperture) and the nature of the guiding ring (weakly sclerotized and plicate), which are diagnostic features of the aporcelaims (
<taxonomicName id="17934D43FFF3E448FBDB70F103E3B1E1" authority="Heyns, 1965" authorityName="Heyns" authorityYear="1965" box="[1088,1424,929,954]" class="Adenophorea" family="Aporcelaimidae" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="family">Aporcelaimidae Heyns, 1965</taxonomicName>
). Nevertheless, the nature of cuticle and
<emphasis id="E2E7EAD2FFF3E448FDCD70960517B185" box="[598,868,965,989]" italics="true" pageId="1" pageNumber="244">pars refringens vaginae</emphasis>
allow separating these genera: the absence of the
<emphasis id="E2E7EAD2FFF3E448FF0C70BA07D4B659" box="[151,423,1001,1025]" italics="true" pageId="1" pageNumber="244">pars refringens vaginae</emphasis>
easily distinguishes
<taxonomicName id="17934D43FFF3E448FD0C70B90577B659" box="[663,772,1001,1025]" class="Adenophorea" family="Aporcelaimidae" genus="Aporcella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FD0C70B90577B659" box="[663,772,1001,1025]" italics="true" pageId="1" pageNumber="244">Aporcella</emphasis>
</taxonomicName>
from
<taxonomicName id="17934D43FFF3E448FCD570B90276B659" box="[846,1029,1001,1025]" class="Adenophorea" family="Aporcelaimidae" genus="Aporcelaimellus" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FCD570B90276B659" box="[846,1029,1001,1025]" italics="true" pageId="1" pageNumber="244">Aporcelaimellus</emphasis>
</taxonomicName>
and
<taxonomicName id="17934D43FFF3E448FBDA70B90377B659" box="[1089,1284,1001,1025]" class="Adenophorea" family="Aporcelaimidae" genus="Metaporcelaimus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FBDA70B90377B659" box="[1089,1284,1001,1025]" italics="true" pageId="1" pageNumber="244">Metaporcelaimus</emphasis>
</taxonomicName>
, whereas the nature of cuticle, two-layered throughout the body and with inner cuticle layer discontinuous at tail end, differentiates
<taxonomicName id="17934D43FFF3E448FEAD7761078AB611" box="[310,505,1073,1097]" class="Adenophorea" family="Aporcelaimidae" genus="Metaporcelaimus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FEAD7761078AB611" box="[310,505,1073,1097]" italics="true" pageId="1" pageNumber="244">Metaporcelaimus</emphasis>
</taxonomicName>
from the other two genera, which show a three-layered cuticle with the inner cuticular layer continuous at the terminus. The results derived from the analysis of the D2-D3 expansion segments of the LSU rDNA gene (Álvarez-Ortega
<emphasis id="E2E7EAD2FFF3E448FD08772A04BFB6C9" box="[659,716,1145,1169]" italics="true" pageId="1" pageNumber="244">et al</emphasis>
., 2013a, b, c) suggest that
<taxonomicName id="17934D43FFF3E448FBB1772902E4B6C9" box="[1066,1175,1145,1169]" class="Adenophorea" family="Aporcelaimidae" genus="Aporcella" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FBB1772902E4B6C9" box="[1066,1175,1145,1169]" italics="true" pageId="1" pageNumber="244">Aporcella</emphasis>
</taxonomicName>
,
<taxonomicName id="17934D43FFF3E448FB3577290317B6C9" box="[1198,1380,1145,1169]" class="Adenophorea" family="Aporcelaimidae" genus="Aporcelaimellus" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FB3577290317B6C9" box="[1198,1380,1145,1169]" italics="true" pageId="1" pageNumber="244">Aporcelaimellus</emphasis>
</taxonomicName>
and
<taxonomicName id="17934D43FFF3E448FF0C77CD0729B6ED" box="[151,346,1181,1205]" class="Adenophorea" family="Aporcelaimidae" genus="Metaporcelaimus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FF0C77CD0729B6ED" box="[151,346,1181,1205]" italics="true" pageId="1" pageNumber="244">Metaporcelaimus</emphasis>
</taxonomicName>
do not share any common recent ancestor, however. Because morphological and molecular evidences do not match, further studies should be needed to clarify the phylogeny and the systematics of
<taxonomicName id="17934D43FFF3E448FF0C77B5073DB6A5" box="[151,334,1253,1277]" class="Adenophorea" family="Aporcelaimidae" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="family">Aporcelaimidae</taxonomicName>
.
</paragraph>
</subSubSection>
<subSubSection id="9889654BFFF3E448FF5C76590479B7E9" pageId="1" pageNumber="244" type="description">
<paragraph id="D02C36C0FFF3E448FF5C76590479B7E9" blockId="1.[151,1437,352,1457]" pageId="1" pageNumber="244">
<taxonomicName id="17934D43FFF3E448FF5C7659070DB779" box="[199,382,1289,1313]" class="Adenophorea" family="Aporcelaimidae" genus="Aporcelaimellus" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FF5C7659070DB779" box="[199,382,1289,1313]" italics="true" pageId="1" pageNumber="244">Aporcelaimellus</emphasis>
</taxonomicName>
is also close to the genera
<taxonomicName id="17934D43FFF3E448FD5F765902FCB779" authority="Thorne &amp; Swanger, 1936" authorityName="Thorne &amp; Swanger" authorityYear="1936" box="[708,1167,1289,1313]" class="Adenophorea" family="Dorylaimidae" genus="Aporcelaimus" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FD5F7659052CB779" box="[708,863,1289,1313]" italics="true" pageId="1" pageNumber="244">Aporcelaimus</emphasis>
Thorne &amp; Swanger, 1936
</taxonomicName>
and
<taxonomicName id="17934D43FFF3E448FB57765906A1B71D" authority="Heyns, 1965" authorityName="Heyns" authorityYear="1965" class="Adenophorea" family="Aporcelaimidae" genus="Makatinus" kingdom="Animalia" order="Dorylaimida" pageId="1" pageNumber="244" phylum="Nematoda" rank="genus">
<emphasis id="E2E7EAD2FFF3E448FB5776590331B779" box="[1228,1346,1289,1313]" italics="true" pageId="1" pageNumber="244">Makatinus</emphasis>
Heyns, 1965
</taxonomicName>
. It differs from the former in its smaller general size (
<emphasis id="E2E7EAD2FFF3E448FCAD767E053EB71D" box="[822,845,1326,1349]" italics="true" pageId="1" pageNumber="244">vs</emphasis>
body
<quantity id="176B9B25FFF3E448FC0E767D0272B71D" box="[917,1025,1325,1349]" metricMagnitude="-3" metricUnit="m" metricValue="7.0" metricValueMax="10.0" metricValueMin="4.0" pageId="1" pageNumber="244" unit="mm" value="7.0" valueMax="10.0" valueMin="4.0">4–10 mm</quantity>
long) and different nature of cuticle (
<emphasis id="E2E7EAD2FFF3E448FF3B760206C4B731" box="[160,183,1362,1385]" italics="true" pageId="1" pageNumber="244">vs</emphasis>
two-layered and bearing criss-cross lines; and from the latter in the nature of the cuticle (
<emphasis id="E2E7EAD2FFF3E448FB24760202A5B731" box="[1215,1238,1362,1385]" italics="true" pageId="1" pageNumber="244">vs</emphasis>
two-layered), lip region offset by a more or less distinct constriction (
<emphasis id="E2E7EAD2FFF3E448FD737626048CB7D5" box="[744,767,1398,1421]" italics="true" pageId="1" pageNumber="244">vs</emphasis>
weakly offset by a slight depression), and one pair (
<emphasis id="E2E7EAD2FFF3E448FAC876260319B7D5" box="[1363,1386,1398,1421]" italics="true" pageId="1" pageNumber="244">vs</emphasis>
2–5 pairs) of ad-cloacal supplements.
</paragraph>
</subSubSection>
</treatment>
</document>
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