<?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>S1870-34532021000100104</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2021.92.3665</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Distribución y modelaje de nicho ecológico, comentarios biogeográficos y taxonómicos del género de arañas Latrodectus (Araneae: Theridiidae) de México]]></article-title>
<article-title xml:lang="en"><![CDATA[Distribution and ecological niche modeling, biogeographical and taxonomic comments of the spider genus Latrodectus (Araneae: Theridiidae) from Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera-Espinosa]]></surname>
<given-names><![CDATA[Luis A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdez-Mondragón]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Biología, Laboratorio Regional de Biodiversidad y Cultivo de Tejidos Vegetales Laboratorio de Aracnología]]></institution>
<addr-line><![CDATA[Santa Cruz Tlaxcala Tlaxcala]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Benemérita Universidad Autónoma de Puebla Facultad de Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Biología, Laboratorio Regional de Biodiversidad y Cultivo de Tejidos Vegetales Laboratorio de Aracnología (LATLAX)]]></institution>
<addr-line><![CDATA[Santa Cruz Tlaxcala Tlaxcala]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<volume>92</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532021000100104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532021000100104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532021000100104&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El género de arañas Latrodectus está conformado actualmente por 32 especies, 3 en México: Latrodectus mactans, Latrodectus hesperus y Latrodectus geometricus (introducida). Se analizó la distribución real y potencial de las 3 especies para el país, presentando registros actualizados por estado, así como la descripción de la variación geográfica de los patrones de coloración dorsales y ventrales del opistosoma en hembras de L. mactans. Se obtuvo un total de 1,147 registros de las 3 especies, de todos los estados del país y en las 14 provincias biogeográficas. Se realizó un modelaje de nicho ecológico utilizando 21 variables medioambientales para todo el género en el país, y de forma particular para L. mactans y L. geometricus. Respecto a la variación regional de coloración dorsal del opistosoma de las hembras, se identificaron 8 patrones para L. mactans y 3 para L. geometricus. Respecto a la variación del patrón ventral en forma de &#8220;reloj de arena&#8221; del opistosoma, L. mactans presentó la mayor variación, registrando 40 patrones distintos. Dada la amplia variación morfológica y de patrones de coloración, la diversidad de especies en México podría estar subestimada, siendo necesario un estudio taxonómico futuro bajo un contexto integrador de las distintas poblaciones, principalmente de L. mactans.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The spider genus Latrodectus currently is composed by 132 species, 3 species in Mexico: Latrodectus mactans, Latrodectus hesperus, and Latrodectus geometricus (introduced). The real and potential distribution of the 3 species for the country were analyzed, with updated records per state, as well as the description of the geographic variation of the dorsal and ventral coloration patterns of the opisthosoma of females of L. mactans. A total of 1,147 records of the 3 species were obtained, having records from all the states of the country and from the 14 biogeographical provinces. Ecological niche modeling was performed using 21 environmental variables for the whole genus in the country, and particularly for L. mactans and L. geometricus. Regarding the regional variation of dorsal coloration of the opisthosoma of the females, 8 patterns were identified for L. mactans and 3 for L. geometricus. Regarding the variation of the ventral &#8220;hourglass&#8221; pattern of the opisthosoma, L. mactans presented the biggest variation, recording 40 different patterns. Given the wide morphological variation and coloration patterns, the diversity of species in Mexico could be underestimated, requiring a future taxonomic study under an integrative context of the different populations, mainly of L. mactans.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Biogeografía]]></kwd>
<kwd lng="es"><![CDATA[Modelaje de nicho ecológico]]></kwd>
<kwd lng="es"><![CDATA[Variación geográfica]]></kwd>
<kwd lng="es"><![CDATA[Registros actualizados]]></kwd>
<kwd lng="en"><![CDATA[Biogeography]]></kwd>
<kwd lng="en"><![CDATA[Ecological niche modeling]]></kwd>
<kwd lng="en"><![CDATA[Geographical variation]]></kwd>
<kwd lng="en"><![CDATA[Updated records]]></kwd>
</kwd-group>
</article-meta>
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