<?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>0034-7744</journal-id>
<journal-title><![CDATA[Revista de Biología Tropical]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. biol. trop]]></abbrev-journal-title>
<issn>0034-7744</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0034-77442021000500304</article-id>
<article-id pub-id-type="doi">10.15517/rbt.v69isuppl.1.46363</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Expansion of the genus Massinium (Holothuroidea: Thyonidae) to the American continent and description of a new species]]></article-title>
<article-title xml:lang="es"><![CDATA[Expansión del género Massinium (Holothuroidea: Thyonidae) al continente americano y descripción de una nueva especie]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solís-Marín]]></surname>
<given-names><![CDATA[Francisco-A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Laguarda-Figueras]]></surname>
<given-names><![CDATA[Alfredo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Conejeros-Vargas]]></surname>
<given-names><![CDATA[Carlos-A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caballero-Ochoa]]></surname>
<given-names><![CDATA[Andrea-A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Durán-González]]></surname>
<given-names><![CDATA[Alicia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Auto&#769;noma de Me&#769;xico  ]]></institution>
<addr-line><![CDATA[ Ciudad de Me&#769;xico]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ Ciudad de Me&#769;xico]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ Ciudad de Me&#769;xico]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México  ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2021</year>
</pub-date>
<volume>69</volume>
<fpage>304</fpage>
<lpage>311</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0034-77442021000500304&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0034-77442021000500304&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0034-77442021000500304&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  The genus Massinium includes 11 species, most from the Indo Pacific Ocean, and had not previously being reported from the American continent.  Objective:  To present the new record of the genus Massinium and describe a new species of this genus.  Methods:  Material collection was done by SCUBA-diving to depths of a maximum of 9 m.  Results: Massinium ocumichoensis sp. nov. is described from seven specimens that extends the range of the genus to the American continent (Guerrero, Michoacan and Jalisco, Mexico). The new species lives in sandy-rocky substrata, from 2 to 16 m deep. It is distinguished from its congeneric species by a combination of morphological characters: mid-dorsal slightly bigger pseudobuttons (40-60 &#956;m), and tables in the body wall. A taxonomic key for distinguishing the species of Massinium is provided.  Conclusions:  The geographic range of the genus Massinium is extended to the Mexican Pacific with M. ocumichoensis sp. nov.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción : El género Massinium incluye 11 especies, la mayoría del Océano Indo-Pacífico, y no se había reportado previamente en el continente americano.  Objetivo:  Presentar el nuevo registro del género Massinium y describir una nueva especie de este.  Métodos:  La recolección de material se realizó mediante buceo a una profundidad máxima de 9 m.  Resultados: Massinium ocumichoensis sp. nov. se describe a partir de siete ejemplares que extiende el rango de distribución del género al Continente Americano (Guerrero, Michoacán y Jalisco, México). La nueva especie vive en sustratos arenosos-rocosos, de 2 a 16 m de profundidad. Se distingue de sus especies congenéricas por una combinación de caracteres morfológicos: pseudobotones de la zona dorsal media ligeramente más grandes (40-60 &#956;m) y tablas en la pared del cuerpo. Se proporciona una clave taxonómica para distinguir las especies de Massinium.  Conclusiones:  El rango geográfico del género Massinium se extiende al Pacífico mexicano con M. ocumichoensis sp. nov.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Echinodermata]]></kwd>
<kwd lng="en"><![CDATA[Dendrochirotida]]></kwd>
<kwd lng="en"><![CDATA[biodiversity]]></kwd>
<kwd lng="en"><![CDATA[taxonomy]]></kwd>
<kwd lng="en"><![CDATA[new record]]></kwd>
<kwd lng="es"><![CDATA[Echinodermata]]></kwd>
<kwd lng="es"><![CDATA[Dendrochirotida]]></kwd>
<kwd lng="es"><![CDATA[biodiversidad]]></kwd>
<kwd lng="es"><![CDATA[taxonomía]]></kwd>
<kwd lng="es"><![CDATA[nuevo registro]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Cherbonnier]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
</person-group>
<source><![CDATA[Echinodermes: Holothurides. Faune de Madagascar]]></source>
<year>1988</year>
<volume>70</volume>
<publisher-loc><![CDATA[Paris ]]></publisher-loc>
<publisher-name><![CDATA[ORSTOM]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Grube]]></surname>
<given-names><![CDATA[A.E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Actinien, Echinodermen Und Wurmer Des Adriatischen Und Mittlemeers]]></source>
<year>1840</year>
<publisher-loc><![CDATA[Königsberg ]]></publisher-loc>
<publisher-name><![CDATA[J.H. Bon]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Heding]]></surname>
<given-names><![CDATA[S.G.]]></given-names>
</name>
<name>
<surname><![CDATA[Panning]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Phyllophoridae. Eine bearbeitung der polytentaculaten dendrochiroten holothurien des zoologischen museums in Kopenhagen]]></article-title>
<source><![CDATA[Spolia Zoologica Musei Hauniensis]]></source>
<year>1954</year>
<volume>13</volume>
<page-range>1-209</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ludwig]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[List of the holothurians in the collection of the Leyden Museum]]></article-title>
<source><![CDATA[Notes Leyden Museum]]></source>
<year>1882</year>
<volume>4</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>127-37</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[O&#8217;Loughlin]]></surname>
<given-names><![CDATA[P.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Barmos]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[VandenSpiegel]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The phyllophorid sea cucumbers of southern Australia (Echinodermata: Holothuroidea: Dendrochirotida: Phyllophoridae)]]></article-title>
<source><![CDATA[Memoirs of Museum Victoria]]></source>
<year>2012</year>
<volume>69</volume>
<page-range>269-308</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[O&#8217;Loughlin]]></surname>
<given-names><![CDATA[P.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mackenzie]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[VandenSpiegel]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New dendrochirotid sea cucumbers from northern Australia (Echinodermata: Holothuroidea: Dendrochirotida)]]></article-title>
<source><![CDATA[Memoirs of Museum Victoria]]></source>
<year>2014</year>
<volume>75</volume>
<page-range>5-23</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Panning]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Revision of the family Cucumariidae, Holothurioidea, Dendolrichnota]]></article-title>
<source><![CDATA[Zoologische Jahrbücher Abteilung für Systematik, Ökologie Geographie Tiere]]></source>
<year>1949</year>
<volume>78</volume>
<page-range>1-111</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Prata]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Christoffersen]]></surname>
<given-names><![CDATA[M.L.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A new species of Pentamera Ayres, 1852 from the Brazilian coast (Holothuroidea, Dendrochirotida, Phyllophoridae)]]></article-title>
<source><![CDATA[ZooKeys]]></source>
<year>2016</year>
<volume>634</volume>
<page-range>1-14</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Samyn]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Thandar]]></surname>
<given-names><![CDATA[A.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Massinium, a new genus in the family Phyllophoridae (Echinodermata: Holothuroidea: Dendrochirotida) with description of a new south-west Indian Ocean species Massinium maculosum]]></article-title>
<source><![CDATA[Belgian Journal of Zoology]]></source>
<year>2003</year>
<volume>133</volume>
<page-range>132-42</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Samyn]]></surname>
<given-names><![CDATA[Y.]]></given-names>
</name>
<name>
<surname><![CDATA[Thandar]]></surname>
<given-names><![CDATA[A.S.]]></given-names>
</name>
<name>
<surname><![CDATA[VandenSpiegel]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Two new species in the phyllophorid genus Massinium (Echinodermata: Holothuroidea) with redescription of Massinium magnum]]></article-title>
<source><![CDATA[Zootaxa]]></source>
<year>2010</year>
<volume>2399</volume>
<page-range>1-19</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Smirnov]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[System of the Class Holothuroidea]]></article-title>
<source><![CDATA[Paleontological Journal]]></source>
<year>2012</year>
<volume>46</volume>
<page-range>793-7832</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Solís-Marín]]></surname>
<given-names><![CDATA[F.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Alvarado]]></surname>
<given-names><![CDATA[J.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez-Ruzafa]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Morata]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Marcos]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Williams]]></surname>
<given-names><![CDATA[S.M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Appendix. Biogeography and diversity of Latin American Echinoderms]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Alvarado-Barrientos]]></surname>
<given-names><![CDATA[J.J.]]></given-names>
</name>
</person-group>
<source><![CDATA[Echinoderm research and Diversity in Latin America]]></source>
<year>2013</year>
<page-range>543-654</page-range><publisher-loc><![CDATA[Berlin and Heidelberg ]]></publisher-loc>
<publisher-name><![CDATA[Springer]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thandar]]></surname>
<given-names><![CDATA[A.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A new species of a phyllophorid holothurian from southern Africa]]></article-title>
<source><![CDATA[Journal of Zoology]]></source>
<year>1989</year>
<volume>219</volume>
<page-range>637-44</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Thandar]]></surname>
<given-names><![CDATA[A.S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Two new subfamilies, three new species and a new subspecies of dendrochirotid sea cucumbers (Echinodermata: Holothuroidea)]]></article-title>
<source><![CDATA[Zootaxa]]></source>
<year>2017</year>
<volume>4365</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>410-20</page-range></nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="">
<collab>WoRMS</collab>
<source><![CDATA[Massinium Samyn &amp; Thandar, 2003]]></source>
<year>2020</year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
