<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1870-3453</journal-id>
<journal-title><![CDATA[Revista mexicana de biodiversidad]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Biodiv.]]></abbrev-journal-title>
<issn>1870-3453</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Biología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-34532020000100628</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2020.91.2905</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Aspiculuris mexicana n. sp. (Nematoda: Heteroxynematidae) parasite of Cricetidae rodents from Mexico, with a taxonomic key for the species of the genus]]></article-title>
<article-title xml:lang="es"><![CDATA[Aspiculuris mexicana n. sp. (Nematoda: Heteroxynematidae) parásito de roedores Cricetidae de México, con una clave taxonómica para las especies del género]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lynggaard]]></surname>
<given-names><![CDATA[Christina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Prieto]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán-Cornejo]]></surname>
<given-names><![CDATA[Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Osorio-Sarabia]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,University of Copenhagen Department of Biology ]]></institution>
<addr-line><![CDATA[Copenhagen K ]]></addr-line>
<country>Denmark</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Biología Laboratorio de Helmintología]]></institution>
<addr-line><![CDATA[México City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Laboratorio de Acarología]]></institution>
<addr-line><![CDATA[México City ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Colegio de Ciencias y Humanidades ]]></institution>
<addr-line><![CDATA[México City ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>91</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532020000100628&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532020000100628&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532020000100628&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract During November 2010, a tarabundí vole, Microtus oaxacensis Goodwin, 1966 and 2 Mexican harvest mice, Reithrodontomys mexicanus Sassure, 1860 collected in Oaxaca, Mexico, were examined for helminths. The nematode Aspiculuris mexicana n. sp., was found in the colon of both species. This parasite is characterized by 2 clear synapomorphies: 1) cervical alae ending abruptly at the middle-length of esophageal bulb, and 2) the presence of 16 caudal papillae with unique arrangement: 3 preanal pairs; 1 pair adanal; a single papilla immediately postanal; 2 postanal pairs; 1 single ventral papilla, and 1 ventral pair far away from the anus. In addition, this work presents an updated taxonomic key for 17 of the 20 valid species included in the genus.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Durante noviembre de 2010, un ejemplar del topillo Microtus oaxacensis Goodwin, 1966 y 2 del ratón cosechero mexicano Reithrodontomys mexicanus Sassure, 1860 colectados en Oaxaca, México, fueron examinados en busca de helmintos. El nemátodo Aspiculuris mexicana n. sp. fue localizado en el colon de ambas especies. Este parásito se caracteriza por 2 sinapomorfías claras: 1) alas cervicales terminando abruptamente en la región media del bulbo esofágico y 2) presencia de 16 papilas caudales con una distribución particular: 3 pares preanales; 1 par adanal; 1 papila media postanal; 2 pares postanales; 1 papila ventral y 1 par ventral lejos del ano. En este artículo se incluye una clave taxonómica actualizada para 17 de las 20 especies válidas del género.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Microtus oaxacensis]]></kwd>
<kwd lng="en"><![CDATA[Reithrodontomys mexicanus]]></kwd>
<kwd lng="en"><![CDATA[Rodentia]]></kwd>
<kwd lng="en"><![CDATA[Neotropics]]></kwd>
<kwd lng="en"><![CDATA[Helminths]]></kwd>
<kwd lng="es"><![CDATA[Microtus oaxacensis]]></kwd>
<kwd lng="es"><![CDATA[Reithrodontomys mexicanus]]></kwd>
<kwd lng="es"><![CDATA[Rodentia]]></kwd>
<kwd lng="es"><![CDATA[Neotrópico]]></kwd>
<kwd lng="es"><![CDATA[Helmintos]]></kwd>
</kwd-group>
</article-meta>
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