<?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>0065-1737</journal-id>
<journal-title><![CDATA[Acta zoológica mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Zool. Mex]]></abbrev-journal-title>
<issn>0065-1737</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Ecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0065-17372002000100005</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Mexican biogeographic provinces: preliminary scheme, general characterizations, and synonymie]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morrone]]></surname>
<given-names><![CDATA[Juan J.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa Organista]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Llorente Bousquets]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Ciencias Departamento de Biología Evolutiva]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Nacional Autónoma de México Herbario de la Facultad de Estudios Superiores Zaragoza ]]></institution>
<addr-line><![CDATA[México Distrito Federal]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2002</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2002</year>
</pub-date>
<numero>85</numero>
<fpage>83</fpage>
<lpage>108</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0065-17372002000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0065-17372002000100005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0065-17372002000100005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[A pesar de que los esquemas biogeográficos propuestos para México se basan en diferentes criterios (geográficos, paleontológicos, faunísticos o florísticos), sus autores implícitamente asumen que las unidades reconocidas representan entidades históricas. El desarrollo de la panbiogeografía y la biogeografía cladística ha cuestionado estas clasificaciones tradicionales, al mostrar que algunas de estas unidades biogeográficas no representaban unidades naturales. Más aún, ha habido intentos para construir sistemas ecogeográficos, basados en el supuesto que los factores bióticos y abióticos constriñen las distribuciones de las especies dentro de áreas definidas. Aquí proponemos un nuevo esquema para México, al sintetizar ambos sistemas biogeográfico y ecológico, de acuerdo con el cual reconocemos las siguientes 14 provincias: California (porción norte de la península de Baja California, desde las Sierras de San Pedro Mártir y Juárez, extendiéndose hacia el norte a lo largo de la Sierra Nevada en el sudoeste de los Estados Unidos), Baja California (península de Baja California), Sonora(áreas costeras del noroeste de México, desde la porción noreste de la península de Baja California hasta la cuenca del río Piaxtla en el sur de Sinaloa), Altiplano Mexicano (centro de México, en los estados de Zacatecas, San Luis Potosí, Guanajuato, Chihuahua, Coahuila, Durango y Nuevo Mexico, así como pequeñas partes de Nuevo León y Sonora, debajo de los 4,000 m de altitud), Tamaulipas (áreas costeras en la parte norte del Golfo de México, al norte de la cuenca del río Pánuco), Sierra Madre Occidental (oeste de México, en los estados de Chihuahua, Durango, Zacatecas, Sonora, Sinaloa, Nayarit y Jalisco, por encima de los 1,000 m de altitud), Sierra Madre Oriental (este de México, en los estados de San Luis Potosí, Tamaulipas, Coahuila, Hidalgo, Nuevo León, Veracruz, Puebla y Querétaro, por encima de los 1,500 m de altitud), Eje Volcánico Transmexicano (centro de México, en los estados de Guanajuato, México, Distrito Federal, Jalisco, Michoacán, Puebla, Oaxaca, Tlaxcala y Veracruz), Depresión del Balsas (centro de México, en los estados de Guerrero, México, Jalisco, Michoacán, Morelos, Oaxaca y Puebla, por debajo de los 2,000 m de altitud), Sierra Madre del Sur (sur centro de México, desde el sur de Michoacán hasta Guerrero y Oaxaca, y parte de Puebla, por encima de los 1,000 m de altitud), Golfo de México (costa del Golfo de México, en el este de México, Belice y norte de Guatemala), Costa Pacífica Mexicana (oeste de México, en la costa Pacífica de los estados de Sinaloa, Nayarit, Colima, Jalisco, Michoacán, Guerrero, Oaxaca y Chiapas), Península de Yucatán (península de Yucatán, en los estados de Campeche, Yucatán y Quintana Roo, por debajo de los 200 m de altitud) y Chiapas (sur de México, Guatemala y Nicaragua, básicamente corresponde a la Sierra Madre de Chiapas, desde los 500 a los 2,000 m de altitud).]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Although the biogeographic schemes proposed for Mexico are based on different criteria (geographic, paleontological, faunistic or floristic), their authors implicitly acknowledge that the units recognized actually represent historical entities. The development of panbiogeography and cladistic biogeography has challenged traditional classifications, by showing that some of these biogeographic units did not represent natural units. Furthermore, there have been attempts to construct ecogeographic systems, based on the assumption that biotic and abiotic factors constraint species distributions within definite areas. By synthesizing both biogeographic and ecological systems, we propose a new scheme for Mexico, where we recognize the following 14 provinces: California (northern portion of the Baja California peninsula, from Sierras of San Pedro Mártir and Juárez, extending northward along the Sierra Nevada into southwestern USA), Baja California (Baja California peninsula), Sonora (coastal areas in northwestern Mexico, from the northeastern portion of the Baja California peninsula to the Piaxtla river basin in southern Sinaloa), Mexican Plateau (central Mexico, in the states of Zacatecas, San Luis Potosí, Guanajuato, Chihuahua, Coahuila, Durango, and Nuevo Mexico, as well as small parts of Nuevo León, and Sonora, below 4,000 m altitude), Tamaulipas (coastal areas in the northern part of the Mexican Gulf, north of the Pánuco river basin), Sierra Madre Occidental (western Mexico, in the states of Chihuahua, Durango, Zacatecas, Sonora, Sinaloa, Nayarit, and Jalisco, above 1,000 m altitude), Sierra Madre Oriental (eastern Mexico, in the states of San Luis Potosí, Tamaulipas, Coahuila, Hidalgo, Nuevo León, Veracruz, Puebla, and Querétaro, above 1,500 m altitude), Transmexican Volcanic Belt (central Mexico, in the states of Guanajuato, Mexico, Distrito Federal, Jalisco, Michoacán, Puebla, Oaxaca, Tlaxcala, and Veracruz), Balsas Basin (central Mexico, in the states of Guerrero, Mexico, Jalisco, Michoacán, Morelos, Oaxaca, and Puebla, below 2,000 m altitude), Sierra Madre del Sur (south central Mexico, from southern Michoacán to Guerrero and Oaxaca, and part of Puebla, above 1,000 m altitude), Mexican Gulf (coast of the Mexican Gulf, in eastern Mexico, Belize, and northern Guatemala), Mexican Pacific Coast (western Mexico, in the Pacific coast of the states of Sinaloa, Nayarit, Colima, Jalisco, Michoacán, Guerrero, Oaxaca, and Chiapas), Yucatán Peninsula (Yucatán peninsula, in the states of Campeche, Yucatán, and Quintana Roo, below 200 m altitude), and Chiapas (southern Mexico, Guatemala, and Nicaragua, basically corresponding to the Sierra Madre de Chiapas, from 500 to 2,000 m altitude).]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[México]]></kwd>
<kwd lng="es"><![CDATA[biogeografía]]></kwd>
<kwd lng="es"><![CDATA[regionalización]]></kwd>
<kwd lng="es"><![CDATA[provincias]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="en"><![CDATA[biogeography]]></kwd>
<kwd lng="en"><![CDATA[regionalization]]></kwd>
<kwd lng="en"><![CDATA[provinces]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="Verdana" size="4">Article</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Mexican biogeographic provinces: preliminary scheme, general characterizations, and synonymies</b></font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>Juan J. Morrone<sup>1</sup>, David Espinosa Organista<sup>2</sup> &amp; Jorge Llorente Bousquets<sup>1</sup></b></font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>1</sup> Museo de Zoolog&iacute;a, Departamento de Biolog&iacute;a Evolutiva, Facultad de Ciencias, UNAM, Apdo. postal 70&#45;399, 04510 Mexico D.F., MEXICO.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Herbario de la Facultad de Estudios Superiores "Zaragoza", UNAM, Av. Guelatao 66, Col. Ej&eacute;rcito de Oriente, 09230 Mexico D.F., MEXICO.</i></font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido: 22 de septiembre 2000    ]]></body>
<body><![CDATA[<br>Acetado: 16 de agosto 2001</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">A pesar de que los esquemas biogeogr&aacute;ficos propuestos para M&eacute;xico se basan en diferentes criterios (geogr&aacute;ficos, paleontol&oacute;gicos, faun&iacute;sticos o flor&iacute;sticos), sus autores impl&iacute;citamente asumen que las unidades reconocidas representan entidades hist&oacute;ricas. El desarrollo de la panbiogeograf&iacute;a y la biogeograf&iacute;a clad&iacute;stica ha cuestionado estas clasificaciones tradicionales, al mostrar que algunas de estas unidades biogeogr&aacute;ficas no representaban unidades naturales. M&aacute;s a&uacute;n, ha habido intentos para construir sistemas ecogeogr&aacute;ficos, basados en el supuesto que los factores bi&oacute;ticos y abi&oacute;ticos constri&ntilde;en las distribuciones de las especies dentro de &aacute;reas definidas. Aqu&iacute; proponemos un nuevo esquema para M&eacute;xico, al sintetizar ambos sistemas biogeogr&aacute;fico y ecol&oacute;gico, de acuerdo con el cual reconocemos las siguientes 14 provincias: California (porci&oacute;n norte de la pen&iacute;nsula de Baja California, desde las Sierras de San Pedro M&aacute;rtir y Ju&aacute;rez, extendi&eacute;ndose hacia el norte a lo largo de la Sierra Nevada en el sudoeste de los Estados Unidos), Baja California (pen&iacute;nsula de Baja California), Sonora(&aacute;reas costeras del noroeste de M&eacute;xico, desde la porci&oacute;n noreste de la pen&iacute;nsula de Baja California hasta la cuenca del r&iacute;o Piaxtla en el sur de Sinaloa), Altiplano Mexicano (centro de M&eacute;xico, en los estados de Zacatecas, San Luis Potos&iacute;, Guanajuato, Chihuahua, Coahuila, Durango y Nuevo Mexico, as&iacute; como peque&ntilde;as partes de Nuevo Le&oacute;n y Sonora, debajo de los 4,000 m de altitud), Tamaulipas (&aacute;reas costeras en la parte norte del Golfo de M&eacute;xico, al norte de la cuenca del r&iacute;o P&aacute;nuco), Sierra Madre Occidental (oeste de M&eacute;xico, en los estados de Chihuahua, Durango, Zacatecas, Sonora, Sinaloa, Nayarit y Jalisco, por encima de los 1,000 m de altitud), Sierra Madre Oriental (este de M&eacute;xico, en los estados de San Luis Potos&iacute;, Tamaulipas, Coahuila, Hidalgo, Nuevo Le&oacute;n, Veracruz, Puebla y Quer&eacute;taro, por encima de los 1,500 m de altitud), Eje Volc&aacute;nico Transmexicano (centro de M&eacute;xico, en los estados de Guanajuato, M&eacute;xico, Distrito Federal, Jalisco, Michoac&aacute;n, Puebla, Oaxaca, Tlaxcala y Veracruz), Depresi&oacute;n del Balsas (centro de M&eacute;xico, en los estados de Guerrero, M&eacute;xico, Jalisco, Michoac&aacute;n, Morelos, Oaxaca y Puebla, por debajo de los 2,000 m de altitud), Sierra Madre del Sur (sur centro de M&eacute;xico, desde el sur de Michoac&aacute;n hasta Guerrero y Oaxaca, y parte de Puebla, por encima de los 1,000 m de altitud), Golfo de M&eacute;xico (costa del Golfo de M&eacute;xico, en el este de M&eacute;xico, Belice y norte de Guatemala), Costa Pac&iacute;fica Mexicana (oeste de M&eacute;xico, en la costa Pac&iacute;fica de los estados de Sinaloa, Nayarit, Colima, Jalisco, Michoac&aacute;n, Guerrero, Oaxaca y Chiapas), Pen&iacute;nsula de Yucat&aacute;n (pen&iacute;nsula de Yucat&aacute;n, en los estados de Campeche, Yucat&aacute;n y Quintana Roo, por debajo de los 200 m de altitud) y Chiapas (sur de M&eacute;xico, Guatemala y Nicaragua, b&aacute;sicamente corresponde a la Sierra Madre de Chiapas, desde los 500 a los 2,000 m de altitud).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> M&eacute;xico, biogeograf&iacute;a, regionalizaci&oacute;n, provincias.</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">Although the biogeographic schemes proposed for Mexico are based on different criteria (geographic, paleontological, faunistic or floristic), their authors implicitly acknowledge that the units recognized actually represent historical entities. The development of panbiogeography and cladistic biogeography has challenged traditional classifications, by showing that some of these biogeographic units did not represent natural units. Furthermore, there have been attempts to construct ecogeographic systems, based on the assumption that biotic and abiotic factors constraint species distributions within definite areas. By synthesizing both biogeographic and ecological systems, we propose a new scheme for Mexico, where we recognize the following 14 provinces: California (northern portion of the Baja California peninsula, from Sierras of San Pedro M&aacute;rtir and Ju&aacute;rez, extending northward along the Sierra Nevada into southwestern USA), Baja California (Baja California peninsula), Sonora (coastal areas in northwestern Mexico, from the northeastern portion of the Baja California peninsula to the Piaxtla river basin in southern Sinaloa), Mexican Plateau (central Mexico, in the states of Zacatecas, San Luis Potos&iacute;, Guanajuato, Chihuahua, Coahuila, Durango, and Nuevo Mexico, as well as small parts of Nuevo Le&oacute;n, and Sonora, below 4,000 m altitude), Tamaulipas (coastal areas in the northern part of the Mexican Gulf, north of the P&aacute;nuco river basin), Sierra Madre Occidental (western Mexico, in the states of Chihuahua, Durango, Zacatecas, Sonora, Sinaloa, Nayarit, and Jalisco, above 1,000 m altitude), Sierra Madre Oriental (eastern Mexico, in the states of San Luis Potos&iacute;, Tamaulipas, Coahuila, Hidalgo, Nuevo Le&oacute;n, Veracruz, Puebla, and Quer&eacute;taro, above 1,500 m altitude), Transmexican Volcanic Belt (central Mexico, in the states of Guanajuato, Mexico, Distrito Federal, Jalisco, Michoac&aacute;n, Puebla, Oaxaca, Tlaxcala, and Veracruz), Balsas Basin (central Mexico, in the states of Guerrero, Mexico, Jalisco, Michoac&aacute;n, Morelos, Oaxaca, and Puebla, below 2,000 m altitude), Sierra Madre del Sur (south central Mexico, from southern Michoac&aacute;n to Guerrero and Oaxaca, and part of Puebla, above 1,000 m altitude), Mexican Gulf (coast of the Mexican Gulf, in eastern Mexico, Belize, and northern Guatemala), Mexican Pacific Coast (western Mexico, in the Pacific coast of the states of Sinaloa, Nayarit, Colima, Jalisco, Michoac&aacute;n, Guerrero, Oaxaca, and Chiapas), Yucat&aacute;n Peninsula (Yucat&aacute;n peninsula, in the states of Campeche, Yucat&aacute;n, and Quintana Roo, below 200 m altitude), and Chiapas (southern Mexico, Guatemala, and Nicaragua, basically corresponding to the Sierra Madre de Chiapas, from 500 to 2,000 m altitude).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Key Words:</b> Mexico, biogeography, regionalization, provinces.</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Introduction</b></font></p>     <p align="justify"><font face="verdana" size="2">Mexico has complex biogeographical patterns, which result from a combination of different ecological and historical factors. From the beginning of the nineteenth century, several biogeographic schemes have been proposed for the country (Martens &amp; Galeotti 1842, Galeotti 1844, Grisebach 1876, Fournier 1876, Hemsley 1887, Ram&iacute;rez 1899, Smith 1941, Dice 1943, Goldman &amp; Moore 1945, Stuart 1964, Cabrera &amp; Willink 1973, Rzedowski 1978, Kohlman &amp; S&aacute;nchez 1984, Casas&#45;Andreu &amp; Reyna&#45;Trujillo 1990, Ferrusqu&iacute;a&#45;Villafranca 1990, Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990, Rzedowski &amp; Reyna&#45;Trujillo 1990, Arriaga <i>et al</i>. 1997, Morrone <i>et al.</i> 1999, Morrone 2001a,b). These biogeographic classifications differ greatly in the criteria employed, namely, geographic, paleontological, faunistic or floristic, although the authors implicitly acknowledge that the units recognized actually represent historical entities. The development of panbiogeography (Croizat 1958, 1960, 1964) and cladistic biogeography (Croizat <i>et al.</i> 1974, Nelson &amp; Platnick 1981) has challenged traditional classifications, by showing that some of these biogeographic units do not represent natural units (Amorim &amp; Tozoni 1994, Craw <i>et al.</i> 1999, Morrone 2001a,b). Alongside the development of these biogeographic classifications, there have been attempts to develop ecogeographic systems, based on the assumption that biotic and abiotic factors constraint species distributions within definite areas. One of the most recent ecogeographic systems for Latin America was proposed by Dinerstein <i>et al.</i> (1995). Some of their ecoregions coincide approximately with biogeographic units, so there is the possibility of integrating them in a single classificatory system (Morrone 1999, 2001a,b).</font></p>     <p align="justify"><font face="verdana" size="2">Our objective is to present a preliminary biogeographic scheme for Mexico, which is intended to synthesize both biogeographic and ecological systems, by providing general characterizations of the provinces, synonymies, and taxa defining them. Synonymies should be considered as approximate, as a complete coincidence between the different names is almost never achieved.</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Material and methods</b></font></p>     <p align="justify"><font face="verdana" size="2">Distributional data for the study were obtained from the literature. In addition, biogeographic schemes proposed by previous authors were compiled and the units recognized by them were compared under a track approach, in order to test whether they represented natural biogeographic units. The track approach (Morrone &amp; Crisci 1995, Craw <i>et al.</i> 1999) basically consists in detecting generalized tracks, which indicate the preexistence of ancestral biotas. A generalized track is equated herein to a natural biogeographic unit or an area of endemism.</font></p>     <p align="justify"><font face="verdana" size="2">When different generalized tracks intersect in a given area, they determine a node, which indicates that different ancestral biotic or geological fragments interrelate, as a consequence of terrain collision, docking or suturing, thus constituting composite biotas or areas. A node is considered herein to be located in the boundaries among different natural areas.</font></p>     <p align="justify"><font face="verdana" size="2">For each province, a brief characterization is provided, some of the different names received by the areas are listed, and the taxa considered to support them are detailed. Synonymies should be considered as approximate, as a complete coincidence between the different names is almost never achieved.</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Results</b></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Our scheme (<a href="#f1">Fig. 1</a>) includes a total of 14 biogeographic provinces in Mexico, five assigned to the Nearctic region and nine assigned to the Neotropical region.</font></p>     <p align="center"><font face="verdana" size="2"><a name="f1"></a></font></p>     <p align="center"><font face="verdana" size="2"><img src="/img/revistas/azm/n85/a5f1.jpg"></font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Nearctic region</b></font></p>     <p align="justify"><font face="verdana" size="2"><b>California province</b></font></p>     <p align="justify"><font face="verdana" size="2">Sandiegoan province: Smith, 1941: 109.</font></p>     <p align="justify"><font face="verdana" size="2">California province: Goldman &amp; Moore 1945: 350; Rzedowski 1978: 101; Casas&#45;Andreu &amp; Reyna&#45;Trujillo 1990: map; Ferrusqu&iacute;a&#45;Villafranca 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990: map; Rzedowski &amp; Reyna&#45;Trujillo 1990: map; Arriaga <i>et al.</i> 1997: 59; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone 2001b: 17.</font></p>     <p align="justify"><font face="verdana" size="2">Montane Forest province: Cabrera &amp; Willink 1973: 30.</font></p>     <p align="justify"><font face="verdana" size="2">San Pedro M&aacute;rtir province: &Aacute;lvarez <i>et al.</i> 1995: 80.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Sierra Ju&aacute;rez Pine and Oak forests ecoregion: Dinerstein <i>et al.</i> 1995: 102.</font></p>     <p align="justify"><font face="verdana" size="2">Coastal California <i>Salvia</i> chaparral ecoregion: Dinerstein <i>et al.</i> 1995: 108.</font></p>     <p align="justify"><font face="verdana" size="2">Northern portion of the Baja California peninsula, from Sierras of San Pedro M&aacute;rtir and Ju&aacute;rez, extending northward along the Sierra Nevada into southwestern USA.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. LICOPODIOPHYTA. Licopsida</b>. Selaginellales. Selaginellaceae: <i>Selaginella asprella</i> (Wagner &amp; Smith 1993). <b>GNETOPHYTA. Gnetopsida</b>. Ephedrales. Ephedraceae: <i>Ephedra californica</i> (Morin 1993). <b>CONIFEROPHYTA. Coniferopsida</b>. Coniferales. Pinaceae: <i>Pinus coulteri</i> and <i>P. quadrifolia</i> (Morin 1993). <b>MAGNOLIOPHYTA. Liliopsida</b>. Lamiales. Lamiaceae: <i>Trichostema parishii</i> (Rzedowski 1978). <b>VERTEBRATA. Amphibia</b>. Anura. Bufonidae: <i>Bufo punctatus</i> (Duellman &amp; Sweet 1999); Hylidae: <i>Hyla cadaverina</i> and <i>H. regilla</i> (Duellman &amp; Sweet 1999); Pelobatidae: <i>Spea hammondii</i> (Duellman &amp; Sweet, 1999). <b>Squamata</b>. Iguanidae: <i>Sceloporus occidentalis</i> (Arriaga <i>et al.</i> 1997). <b>Aves</b>. Galliformes. Phasianidae: <i>Callipepla picta</i> (Arriaga <i>et al.</i> 1997). Piciformes. Picidae: <i>Melanerpes lewis</i> and <i>Picoides nuttalli</i> (Arriaga <i>et al.</i> 1997). Passeriformes. Fringillidae: <i>Carpodactus purpureus</i> (Arriaga <i>et al.</i> 1997); Muscicapidae: <i>Chamaea fasciata</i> (Arriaga <i>et al.</i> 1997); Passeridae: <i>Agelaius tricolor</i> (Arriaga <i>et al.</i> 1997); Sturnidae: <i>Toxostoma redivivum</i> (Arriaga <i>et al.</i> 1997). <b>Mammalia</b>. Rodentia. Muridae: <i>Neotoma fuscipes martirensis</i> and <i>Peromyscus californicus insignis</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Baja California province</b></font></p>     <p align="justify"><font face="verdana" size="2">Baja California province: Smith 1941: 109; Goldman &amp; Moore 1945: 351; Rzedowski 1978: 105; Ferrusqu&iacute;a&#45;Villafranca 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990: map; Rzedowski &amp; Reyna&#45;Trujillo 1990: map; Arriaga <i>et al.</i> 1997: 60; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone 2001b: 18.</font></p>     <p align="justify"><font face="verdana" size="2">Cabo de Baja California province: Smith 1941: 109.</font></p>     <p align="justify"><font face="verdana" size="2">Guadalupe Island province: Goldman &amp; Moore 1945: 350; Rzedowski 1978: 101; Rzedowski &amp; Reyna&#45;Trujillo 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Vizca&iacute;no Desert province: Goldman &amp; Moore 1945: 351; &Aacute;lvarez <i>et al.</i> 1995: 82.</font></p>     <p align="justify"><font face="verdana" size="2">Cabo province: Casas&#45;Andreu &amp; Reyna&#45;Trujillo 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990: map; Arriaga <i>et al.</i> 1997: 60; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Peninsular province: Casas&#45;Andreu &amp; Reyna&#45;Trujillo 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">San Lucas province: Ferrusqu&iacute;a&#45;Villafranca 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Llanos de Magdalena province: &Aacute;lvarez <i>et al.</i> 1995: 81.</font></p>     <p align="justify"><font face="verdana" size="2">Tierras Bajas de los Cabos province: &Aacute;lvarez <i>et al.</i> 1995: 81.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra de la Laguna province: &Aacute;lvarez <i>et al.</i> 1995: 81.</font></p>     <p align="justify"><font face="verdana" size="2">Santo Domingo province: &Aacute;lvarez <i>et al.</i> 1995: 82.</font></p>     <p align="justify"><font face="verdana" size="2">San Dieguina province: &Aacute;lvarez <i>et al.</i> 1995: 82.</font></p>     <p align="justify"><font face="verdana" size="2">San Lucas Pine and Oak forests ecoregion: Dinerstein <i>et al.</i> 1995: 102.</font></p>     <p align="justify"><font face="verdana" size="2">Baja California Shrublands ecoregion: Dinerstein <i>et al.</i> 1995: 109.</font></p>     <p align="justify"><font face="verdana" size="2">San Lucas Mezquital ecoregion: Dinerstein <i>et al.</i> 1995: 109.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Baja California peninsula</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. LICOPODIOPHYTA. Licopsida</b>. Selaginellales. Selaginellaceae: <i>Selaginella eremophila</i> (Wagner &amp; Smith 1993). <b>ARTHROPODA. Arachnida</b>. Scorpiones. Chactidae: <i>Nullibrotheas</i> spp. (Louren&ccedil;o &amp; Sissom 2000); Diplocentridae: <i>Bioculus</i> spp. (Louren&ccedil;o &amp; Sissom 2000); Iuridae: <i>Anuroctonus phaiodactylus</i> (Louren&ccedil;o &amp; Sissom 2000); Vaejovidae: <i>Paravaejovis</i> spp., <i>Syntropis</i> spp., and <i>Vejovoidus</i> spp. (Louren&ccedil;o &amp; Sissom 2000). <b>Hexapoda</b>. Coleoptera. Elateridae: <i>Deroconus sleeperi</i> (Johnson 1995); Scarabaeidae: <i>Coenocycha sleeperi</i> (Evans &amp; d'Hotman 1988). Orthoptera. Pyrgomorphidae: <i>Atyphacris californica</i> (Kevan 1977). <b>VERTEBRATA. Squamata</b>. Eublepharidae: <i>Coleonyx switacki</i> (Dial &amp; Grismer 1992); Viperidae: <i>Crotalus enyo</i> (Campbell &amp; Lamar 1989). <b>Aves</b>. Ciconiiformes. Laridae: <i>Larus livens</i> (Arriaga <i>et al.</i> 1997). Galliformes. Phasianidae: <i>Callipepla californica</i> (Arriaga <i>et al.</i> 1997). Passeriformes. Paridae: <i>Parus gambeli</i> (Arriaga <i>et al.</i> 1997). Strigiformes. Strigidae: <i>Glaucidium hoskinsi</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Sonora province</b></font></p>     <p align="justify"><font face="verdana" size="2">Sinaloa province: Smith 1941: 109; Goldman &amp; Moore 1945: 355; Ferrusqu&iacute;a&#45;Villafranca 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990: map; &Aacute;lvarez&#45;Casta&ntilde;eda <i>et al.</i> 1995: 79.</font></p>     <p align="justify"><font face="verdana" size="2">Arizona province: Smith 1941: 109.</font></p>     <p align="justify"><font face="verdana" size="2">Sonora province: Goldman &amp; Moore 1945: 352; Ferrusqu&iacute;a&#45;Villafranca 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990: map; &Aacute;lvarez&#45;Casta&ntilde;eda <i>et al.</i> 1995: 81; Arriaga <i>et al.</i> 1997: 60; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone 2001b: 19.</font></p>     <p align="justify"><font face="verdana" size="2">Northeastern Coastal Plain province: Rzedowski 1978: 106; Rzedowski &amp; Reyna&#45;Trujillo 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Colorado&#45;Sonorense Desert province: Casas&#45;Andreu &amp; Reyna&#45;Trujillo 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Altar Desert province: &Aacute;lvarez&#45;Casta&ntilde;eda <i>et al.</i> 1995: 80.</font></p>     <p align="justify"><font face="verdana" size="2">Guaymensis province: &Aacute;lvarez&#45;Casta&ntilde;eda <i>et al.</i> 1995: 81.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Valle Inferior del Colorado province: &Aacute;lvarez&#45;Casta&ntilde;eda <i>et al.</i> 1995: 82.</font></p>     <p align="justify"><font face="verdana" size="2">Sonoran Xeric Shrublands ecoregion: Dinerstein <i>et al.</i> 1995: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Northern Sonoran Cacti Shrublands ecoregion: Dinerstein <i>et al.</i> 1995: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Coastal areas in northwestern Mexico, from the northeastern portion of the Baja California peninsula to the Piaxtla river basin in the south.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. POLYPODIOPHYTA. Pteridales</b>. Pteridaceae: <i>Argyrochosma jonesii</i> and <i>Thelypteris puberula</i> var. <i>sonorensis</i> (Morin 1993). <b>ARTHROPODA. Hexapoda</b>. Coleoptera. Carabidae: <i>Agonum parextimum</i> (Liebherr 1994); Heteroceridae: <i>Heterocerus unituberculosus</i> (Miller 1995); Scarabaeidae: <i>Cotinis producta</i> (Deloya &amp; Ratcliffe 1988). <b>VERTEBRATA. Amphibia</b>. Anura. Bufonidae: <i>Bufo alvarius</i> (Arriaga <i>et al.</i> 1997). Squamata. Viperidae: <i>Crotalus cerastes</i> (Campbell &amp; Lamar 1989). <b>Aves</b>. Passeriformes. Fringillidae: <i>Aimophila carpalis</i> (Arriaga <i>et al.</i> 1997); Sturnidae: <i>Toxostoma bendirei</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Mexican Plateau province</b></font></p>     <p align="justify"><font face="verdana" size="2">Austro&#45;Central province: Smith 1941: 108.</font></p>     <p align="justify"><font face="verdana" size="2">Chihuahuan province: Smith 1941: 109; Ferrusqu&iacute;a&#45;Villafranca 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Apachian province: Smith 1941: 109.</font></p>     <p align="justify"><font face="verdana" size="2">Chihuahua&#45;Zacatecas province: Goldman &amp; Moore 1945: 354.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Mexican Xeric province, in part: Cabrera &amp; Willink 1973: 34.</font></p>     <p align="justify"><font face="verdana" size="2">Chihuahuan Desert province: Casas&#45;Andreu &amp; Reyna&#45;Trujillo 1990: map. Coahuila province: Ferrusqu&iacute;a&#45;Villafranca 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Plateau province: Ferrusqu&iacute;a&#45;Villafranca 1990: map; Rzedowski &amp; Reyna&#45;Trujillo 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Zacatecan province: Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Chihuahuan Xeric Shrublands ecoregion: Dinerstein <i>et al.</i> 1995: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Central Mexican Xeric Shrublands ecoregion: Dinerstein <i>et al.</i> 1995: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Northern Plateau (Chihuahuan) province: Arriaga <i>et al.</i> 1997: 61; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Southern Plateau (Zacatecan&#45;Potosi) province: Arriaga <i>et al.</i> 1997: 62; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Mexican Plateau province: Campbell 1999: 115; Morrone 2001b: 22.</font></p>     <p align="justify"><font face="verdana" size="2">Northern Plateau province: Morrone <i>et al.</i> 1999: 510.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Southern Plateau province: Morrone <i>et al.</i> 1999: 510.</font></p>     <p align="justify"><font face="verdana" size="2">Central Mexico, in the states of Zacatecas, San Luis Potos&iacute;, Guanajuato, Chihuahua, Coahuila, Durango, and Nuevo Mexico, as well as small parts of Nuevo Le&oacute;n and Sonora, below 4,000 m altitude.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. LICOPODIOPHYTA. Licopsida</b>. Selaginellales. Selaginellaceae: <i>Selaginella viridissima</i> and <i>S. wrightii</i> (Wagner &amp; Smith 1993). <b>POLYPODIOPHYTA. Pteridales</b>. Pteridaceae: <i>Argyrochosma limitanea</i> var. <i>mexicana</i> and <i>A. microphylla</i> (Morin 1993). <b>MAGNOLIOPHYTA. Liliopsida</b>. Liliales. Agavaceae: <i>Yucca aloifolia, Y. decipes, Y. elephantipes, Y. potosina, Y. queretaroensis, Y. rigida</i>, and <i>Y. zigadenus</i> (Espinosa <i>et al.</i> 2000). <b>Magnoliopsida</b>. Fabales. Fabaceae: <i>Leucaena stenocarpa and Pithecelobium recordii</i> (Espinosa <i>et al.</i> 2000). Juglandales. Juglandaceae: <i>Juglans major</i> (Espinosa <i>et al.</i> 2000). Sapindales. Burseraceae: <i>Bursera medranoana</i> and <i>B. pinnata</i> (Espinosa <i>et al.</i> 2000). <b>ARTHROPODA. Hexapoda</b>. Coleoptera. Attelabidae: <i>Pilolabus viridans</i> (Espinosa <i>et al.</i> 2000); Dytiscidae: <i>Deronectes roffi</i> (Espinosa <i>et al.</i> 2000); Scarabaeidae: <i>Cotinis rufipennis</i> and <i>Hologymnetis margaritis</i> (Deloya &amp; Ratcliffe 1988; Espinosa <i>et al.</i> 2000). Lepidoptera. Papilionidae: <i>Troilides torquatus tolus</i> (Espinosa <i>et al.</i> 2000); Pieridae: <i>Anthocharis cethura</i> (Espinosa <i>et al.</i> 2000). <b>VERTEBRATA. Amphibia</b>. Anura. Ranidae: <i>Rana dunni, R. forreri, R. magnaocularis, R. montezumae, R. neovolcanica, R. pustulosa, R. tlaloci, R. trilobata</i>, and <i>R. zweifeli</i> (Duellman &amp; Sweet, 1999). <b>Mammalia</b>. Rodentia. Heteromyidae: <i>Perognathus flavus</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Tamaulipas province</b></font></p>     <p align="justify"><font face="verdana" size="2">Tamaulipas province: Smith, 1941: 109; Goldman &amp; Moore, 1945: 354; Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map; Ferrusqu&iacute;a&#45;Villafranca, 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map; Arriaga <i>et al.</i> 1997: 61; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone, 2001b: 23.</font></p>     <p align="justify"><font face="verdana" size="2">Northeastern Coastal Plain province: Rzedowski, 1978: 106; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Eastern Mexican Mezquital ecoregion: Dinerstein <i>et al.</i> 1995: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Coastal areas in the northern part of the Mexican Gulf, north of the P&aacute;nuco river basin.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. FILICOPHYTA. Filicopsida</b>. Marsileales. Marsileaceae; <i>Marsilea macropoda</i> (Morin, 1993). <b>GNETOPHYTA. Gnetopsida</b>. Ephedrales. Ephedraceae: <i>Ephedra pedunculata</i> (Morin, 1993). <b>ARTHROPODA. Arachnida</b>. Opiliones. Nemastomatidae: <i>Ortholasma sbordonii</i> (Kury &amp; Cokendolpher, 2000); Sclerosomatidae: <i>Holcobunus mexicanus</i> (Kury &amp; Cokendolpher, 2000); Stygnommatidae: <i>Stygnomma tuberculatum</i> (Kury &amp; Cokendolpher, 2000); Stynopsidae: <i>Troglostygnopsis inops</i> (Kury &amp; Cokendolpher, 2000). <b>Hexapoda</b>. Coleoptera. Carabidae: <i>Agonum extimum</i> (Liebherr, 1994). Heteroptera: Reduviidae: <i>Diaditus pictipes</i> (Giacchi, 1982). <b>VERTEBRATA. Actinopterygii</b>. Cyprinodontiformes. Poecilidae: <i>Gambusia marshi</i> (Lydeard <i>et al.</i> 1995). <b>Squamata</b>. Eublepharidae: <i>Coleonyx brevis</i> (Dial &amp; Grismer, 1992). <b>Aves</b>. Passeriformes. Corvidae: <i>Corvus imparatus</i> (Arriaga <i>et al.</i> 1997); Troglodytidae: <i>Thryothorus ludovicianus</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Neotropical region</b></font></p>     <p align="justify"><font face="verdana" size="2"><b>Sierra Madre Occidental province</b></font></p>     <p align="justify"><font face="verdana" size="2">Durango province: Smith, 1941: 109.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre Occidental province: Goldman &amp; Moore, 1945: 351; Rzedowski, 1978: 102; Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map; Ferrusqu&iacute;a&#45;Villafranca, 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map; &Aacute;lvarez&#45;Casta&ntilde;eda <i>et al.</i> 1995: 80; Arriaga <i>et al.</i> 1997: 64; Escalante <i>et al.</i> 1998: 285; Campbell, 1999: 114; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone, 2001a: 47; Morrone, 2001b: 34.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre Occidental Pine and Oak Forests ecoregion: Dinerstein <i>et al.</i> 1995: 102.</font></p>     <p align="justify"><font face="verdana" size="2">Western Mexico, in the states of Chihuahua, Durango, Zacatecas, Sonora, Sinaloa, Nayarit, and Jalisco, above 1,000 m altitude.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. LICOPODIOPHYTA. Licopsida</b>. Selaginellales. Selaginellaceae: <i>Selaginella mutica</i> var. <i>mutica</i> (Wagner &amp; Smith, 1993). <b>POLYPODIOPHYTA. Pteridales</b>. Dryopteridaceae: <i>Woodsia philipsii</i> (Morin, 1993); Pteridaceae: <i>Argyrochosma limitanea</i> var. <i>limitanea</i> (Morin, 1993). <b>CONIFEROPHYTA. Coniferopsida</b>. Coniferales. Pinaceae: <i>Pinus engelmanii and P. strobiformis</i> (Rzedowski, 1978; Morin, 1993). <b>MAGNOLIOPHYTA. Magnoliopsida</b>. Ericales. Ericaceae: <i>Arbutus madrensis</i> (Gonz&aacute;lez&#45;Elizondo &amp; Gonz&aacute;lez&#45;Elizondo, 1992). <b>ARTHROPODA. Arachnida</b>. Scorpiones. Vaejovidae: <i>Serradigitus</i> spp. (Louren&ccedil;o &amp; Sissom, 2000). <b>Hexapoda</b>. Coleoptera: Cleridae: <i>Enoclerus madrensis</i> (Rifkind, 1994); Lampyridae: <i>Photinus chihuahuensis</i> and <i>P. gorhami</i> (Zaragoza Caballero, 1995); Scarabaeidae: <i>Coscinocephalus cribrifrons, C. tepehuanus, Hologymnetis argenteola, Homoiosternus beckeri</i>, and <i>Onthophagus coporoides</i> (Ratcliffe &amp; Deloya, 1992; Lobo &amp; Halffter, 1994; Mor&oacute;n, 1995; Mor&oacute;n &amp; Ratcliffe, 1996; Delgado &amp; Blackaller&#45;Bages, 1997). <b>VERTEBRATA. Amphibia</b>. Urodela. Ambystomatidae: <i>Ambystoma rosaceum</i> (Arriaga <i>et al.</i> 1997). <b>Squamata</b>. Colubridae: <i>Thamnophis nigronuchalis</i> (Arriaga <i>et al.</i> 1997); Viperidae: <i>Crotalus pricei</i> and <i>C. willardi</i> (Campbell &amp; Lamar, 1989). <b>Aves</b>. Passeriformes. Corvidae: <i>Cyanocorax dickeyi</i> (Arriaga <i>et al.</i> 1997). Psittaciformes. Psittacidae: <i>Rhynchopsitta pachyrrhyncha</i> (Arriaga <i>et al.</i> 1997). Trogoniformes. Trogonidae: <i>Euptilotis neoxenus</i> (Arriaga <i>et al.</i> 1997). <b>Mammalia</b>. Rodentia. Muridae: <i>Microtus mexicanus madrensis</i> and <i>Peromyscus aztecus spicilegus</i> (Arriaga <i>et al.</i> 1997; Sullivan <i>et al.</i> 1997); Sciuridae: <i>Glaucomys volans madrensis</i> and <i>Sciurus nayaritensis apache</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Sierra Madre Oriental province</b></font></p>     <p align="justify"><font face="verdana" size="2">Austro&#45;Eastern province: Smith, 1941: 108.</font></p>     <p align="justify"><font face="verdana" size="2">Hidalgo province: Smith, 1941: 108.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Sierra Madre Oriental province: Goldman &amp; Moore, 1945: 356; Rzedowski, 1978: 103; Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map; Ferrusqu&iacute;a&#45;Villafranca, 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map; Arriaga <i>et al.</i> 1997: 64; Escalante <i>et al.</i> 1998: 285; Campbell, 1999: 114; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone, 2001a: 48, 2001b: 35.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre Oriental Pine and Oak Forests ecoregion: Dinerstein <i>et al.</i> 1995: 102.</font></p>     <p align="justify"><font face="verdana" size="2">Eastern Mexico, in the states of San Luis Potos&iacute;, Tamaulipas, Coahuila, Hidalgo, Nuevo Le&oacute;n, Puebla, Tlaxcala and Quer&eacute;taro, above 1,500 m altitude.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. MAGNOLIOPHYTA. Liliopsida</b>. Liliales. Agavaceae: <i>Agave tenuifolia</i> (Zamudio&#45;Ruiz &amp; S&aacute;nchez&#45;Mart&iacute;nez, 1995). <b>Magnoliopsida</b>. Ebenales. Styracaceae: <i>Styrax argenteus</i> (Carranza&#45;Gonz&aacute;lez, 1993). Fabales. Fabaceae: <i>Inga huastecana</i> (Sousa, 1995). Juglandales. Juglandaceae: <i>Juglans mollis</i> (Rzedowski, 1978). <b>ARTHROPODA. Arachnida</b>. Scorpiones. Superstitionidae: <i>Typhlochactas</i> spp. (Louren&ccedil;o &amp; Sissom, 2000). <b>Hexapoda</b>. Coleoptera: Passalidae: <i>Odontotaenius zodiacus, Petrejoides laticornis, P. nebulosus, P. orizabae</i>, and <i>P. silvaticus</i> (Castillo &amp; Reyes&#45;Castillo, 1984; Castillo <i>et al.</i> 1988); Scarabaeidae: <i>Anopsiostes pauliani, Cotinis orientalis</i> and <i>Homoiosternus setosus</i> (Deloya &amp; Ratcliffe, 1988; Delgado &amp; Blackaller&#45;Bages, 1997; Delgado &amp; Hern&aacute;ndez, 1998); Staphylinidae: <i>Styngetus deyrollei</i> (Navarrete&#45;Heredia, 1997). Lepidoptera. Papilionidae: <i>Pterourus palamedes leontis</i> (Llorente <i>et al.</i> 1997). Thysanoptera. Thripidae: <i>Frankliniella oneillae</i> and <i>F. zacualtipana</i> (Johansen, 1998). <b>VERTEBRATA. Squamata</b>. Colubridae: <i>Rhadinea gaigae</i> (Arriaga <i>et al.</i> 1997). <b>Aves</b>. Galliformes. Phasianidae: <i>Dendrortix barbatus</i> (Arriaga <i>et al.</i> 1997). Psittaciformes. Psittacidae: <i>Rhynchopsitta terrisi</i> (Arriaga <i>et al.</i> 1997). Strigiformes. Strigidae: <i>Glaucidium sanchezi</i> (Arriaga <i>et al.</i> 1997). <b>Mammalia</b>. Rodentia. Muridae: <i>Peromyscus a. aztecus</i> (Sullivan <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Transmexican Volcanic Belt province</b></font></p>     <p align="justify"><font face="verdana" size="2">Austro&#45;Western province: Smith, 1941: 108.</font></p>     <p align="justify"><font face="verdana" size="2">Transverse Volcanic province: Goldman &amp; Moore, 1945: 356; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Serran&iacute;as Meridionales province, in part: Rzedowski, 1978: 103; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Tehuac&aacute;n&#45;Culiac&aacute;n Valley province: Rzedowski, 1978: 107; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Neolvolcanic Axis province: Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map; Escalante <i>et al.</i> 1998: 285; Morrone <i>et al.</i> 1999: 510.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Neovolcanic province: Ferrusqu&iacute;a&#45;Villafranca, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Central Mexican Oak Forests ecoregion: Dinerstein <i>et al.</i> 1995: 102.</font></p>     <p align="justify"><font face="verdana" size="2">Mexican Transvolcanic Pine and Oak forests ecoregion: Dinerstein <i>et al.</i> 1995: 102.</font></p>     <p align="justify"><font face="verdana" size="2">Puebla Xeric Shrublands ecoregion: Dinerstein <i>et al.</i> 1995: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Volcanic Axis province: Arriaga <i>et al.</i> 1997: 64; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Transmexican Volcanic Belt province: Morrone, 2001a: 48, 2001b: 35.</font></p>     <p align="justify"><font face="verdana" size="2">Central Mexico, in the states of Guanajuato, Mexico, Distrito Federal, Jalisco, Michoac&aacute;n, Puebla, Oaxaca, Tlaxcala, and Veracruz.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. MAGNOLIOPHYTA. Magnoliopsida</b>. Asterales. Asteraceae: <i>Montanoa frutescens</i> (Funk, 1982). <b>ARTHROPODA. Hexapoda</b>. Coleoptera: Passalidae: <i>Odontotaenius cuspidatus</i> and <i>O. cerastes</i> (Castillo <i>et al.</i> 1988); Scarabaeidae: <i>Golofa globulicornis</i> and <i>Onthophagus hippopotamus</i> (Lobo &amp; Halffter, 1994; Mor&oacute;n, 1995). Diptera. Ceratopogonidae: <i>Culicoides albomaculata, C. bakeri</i>, and <i>C. dampfi</i> (Arriaga <i>et al.</i> 1997); Mydidae: <i>Mydas oaxacensis</i> (Arriaga <i>et al.</i> 1997). Hymenoptera. Formicidae: <i>Polybia simillina</i> (Arriaga <i>et al.</i> 1997). <b>VERTEBRATA. Amphibia</b>. Anura. Ranidae: <i>Rana montezumae</i> (Arriaga <i>et al.</i> 1997). Urodela. Phetodontidae: <i>Pseudoeurycea scandens</i> (Arriaga <i>et al.</i> 1997). <b>Aves</b>. Passeriformes. Fringillidae: <i>Geothlypis speciosa</i> (Arriaga <i>et al.</i> 1997). <b>Mammalia</b>. Didelphimorphia. Didelphidae: <i>Marmosa canescens oaxacae</i> (Arriaga <i>et al.</i> 1997). Insectivora. Soricidae: <i>Cryptotis goldmani alticola</i> and <i>Sorex vagrans orizabae</i> (Arriaga <i>et al.</i> 1997). Lagomorpha. Leporidae: <i>Sylvilagus floridanus aztecus</i> (Arriaga <i>et al.</i> 1997). Rodentia. Muridae: <i>Peromyscus aztecus hylocetes, P. leucotus</i>, and <i>Reithrodontomys chrysopsis</i> (Arriaga <i>et al.</i> 1997; Sullivan <i>et al.</i> 1997); Sciuridae: <i>Spermophilus m. mexicanus</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Balsas Basin province</b></font></p>     <p align="justify"><font face="verdana" size="2">Upper Balsas province: Smith, 1941: 108.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Lower Balsas province: Smith, 1941: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Balsas Basin province: Rzedowski, 1978: 108; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map; Arriaga <i>et al.</i> 1997: 62; Escalante <i>et al.</i> 1998: 285; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone, 2001a: 49, 2001b: 38.</font></p>     <p align="justify"><font face="verdana" size="2">Balsas province: Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Balsas Dry Forests ecoregion: Dinerstein <i>et al.</i> 1995: 99.</font></p>     <p align="justify"><font face="verdana" size="2">Central Mexico, in the states of Guerrero, Mexico, Jalisco, Michoac&aacute;n, Morelos, Oaxaca, and Puebla, below 2,000 m altitude.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. MAGNOLIOPHYTA. Magnoliopsida</b>. Asterales. Asteraceae: <i>Montanoa liebmannii</i> and <i>M. reveali</i> (Funk, 1982). Fabales. Fabaceae: <i>Brongniartia montalvoana</i> (Dorado &amp; Arias, 1992). Sapindales. Burseraceae: <i>Bursera aloexylon</i>, <i>B. aptera, B. longipes, B. submoniliformis</i>, and <i>B. trimera</i> (Rzedowski, 1978; Kohlman &amp; S&aacute;nchez, 1984; Arriaga <i>et al.</i> 1997). <b>ARTHROPODA. Hexapoda</b>. Coleoptera. Scarabaeidae: <i>Cotinis pueblensis</i> (Deloya &amp; Ratcliffe, 1988). <b>VERTEBRATA. Aves</b>. Passeriformes. Certhiidae: <i>Campylorhynchus jocosus</i> (Arriaga <i>et al.</i> 1997); Fringillidae: <i>Aimophila humeralis</i> (Arriaga <i>et al.</i> 1997). Strigiformes. Strigidae: <i>Otus seductus</i> (Arriaga <i>et al.</i> 1997). <b>Mammalia</b>. Rodentia. Geomyidae: <i>Orthogeomys grandis alleni, O. g. carbo, O. g. guerrerensis</i>, and <i>O. g. soconuscensis</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Sierra Madre del Sur province</b></font></p>     <p align="justify"><font face="verdana" size="2">Oaxacan Plateau province: Smith, 1941: 107.</font></p>     <p align="justify"><font face="verdana" size="2">Guerrero province: Smith, 1941: 108.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre del Sur province: Goldman &amp; Moore, 1945: 358; Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map; Arriaga <i>et al.</i> 1997: 65; Campbell, 1999: 116; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone, 2001a: 49, 2001b: 39.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Serran&iacute;as Meridionales province, in part: Rzedowski, 1978: 103; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Oaxaca province: Ferrusqu&iacute;a&#45;Villafranca, 1990: map; Arriaga <i>et al.</i> 1997: 65; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Oaxaco&#45;Tehuacanense province: Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre del Sur pine and oak forests ecoregion: Dinerstein <i>et al.</i> 1995: 103.</font></p>     <p align="justify"><font face="verdana" size="2">Guerrero cacti shrublands ecoregion: Dinerstein <i>et al.</i> 1995: 111.</font></p>     <p align="justify"><font face="verdana" size="2">Nudo de Zempoalt&eacute;petl province: Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra de Mihuatl&aacute;n province: Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre del Sur&#45;Oaxaca province: Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre del Sur&#45;Guerrero province: Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">South central Mexico, from southern Michoac&aacute;n to Guerrero and Oaxaca, and part of Puebla, above 1,000 m altitude.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Taxa. MAGNOLIOPHYTA. Magnoliopsida</b>. Asterales. Asteraceae: <i>Montanoa grandiflora, M. mollissima</i>, and <i>M. tomentosa</i> subsp. <i>microcephala</i> (Funk, 1982). <b>ARTHROPODA. Hexapoda</b>. Coleoptera: Passalidae: <i>Petrejoides imbellis, P. jalapensis</i>, and <i>P. olmecae</i> (Castillo &amp; Reyes&#45;Castillo, 1984); Scarabaeidae: <i>Cotinis ibarrai</i> and <i>Onthophagus bassariscus</i> (Deloya &amp; Ratcliffe, 1988; Lobo &amp; Halffter, 1994; Deloya, 1995); Staphylinidae: <i>Gansia flavata</i> (Ashe &amp; Lingafelter, 1995). Orthoptera. Pyrgomorphidae: <i>Sphenarium p. purpurascens</i> (Kevan, 1977). <b>VERTEBRATA. Amphibia</b>. Anura. Ranidae: <i>Rana sierramadrensis</i> (Arriaga <i>et al.</i> 1997). <b>Squamata</b>. Viperidae: <i>Porthidium barbouri</i> (Campbell, 1988). <b>Aves</b>. Trochiliformes. Trochilidae: <i>Amazilia wagleri</i>, <i>Calothorax lucifer, Cynanthus sordidus</i>, and <i>Eupherusa cyanophrys</i> (Arriaga <i>et al.</i> 1997). <b>Mammalia</b>. Rodentia. Muridae: <i>Peromyscus aztecus evides</i> (Sullivan <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Mexican Gulf province</b></font></p>     <p align="justify"><font face="verdana" size="2">Veracruzan province: Smith, 1941: 110; Goldman &amp; Moore, 1945: 357; Barrera, 1962: 101; Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Tabasco&#45;Palenquen province: Barrera, 1962: 101.</font></p>     <p align="justify"><font face="verdana" size="2">Lempira&#45;Tegucigalpan province: Ryan, 1963: 25.</font></p>     <p align="justify"><font face="verdana" size="2">Mexican Xeric province, in part: Cabrera &amp; Willink, 1973: 34.</font></p>     <p align="justify"><font face="verdana" size="2">Central American rainforest center: M&uuml;ller, 1973: 10.</font></p>     <p align="justify"><font face="verdana" size="2">Mexican Gulf province: Rzedowski, 1978: 109; Ferrusqu&iacute;a&#45;Villafranca, 1990: map; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map; Arriaga <i>et al.</i> 1997: 63; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64; Morrone, 2001a: 49, 2001b: 42.</font></p>     <p align="justify"><font face="verdana" size="2">Gulf province: Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Tehuantepec Isthmus moist forests ecoregion: Dinerstein <i>et al.</i> 1995: 91.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Flooded forests of Belize ecoregion: Dinerstein <i>et al.</i> 1995: 92.</font></p>     <p align="justify"><font face="verdana" size="2">Tamaulipas and Veracruz dry forests ecoregion: Dinerstein <i>et al.</i> 1995: 99.</font></p>     <p align="justify"><font face="verdana" size="2">Veracruz dry forests ecoregion: Dinerstein <i>et al.</i> 1995: 99.</font></p>     <p align="justify"><font face="verdana" size="2">Veracruz oak forests ecoregion: Dinerstein <i>et al.</i> 1995: 102.</font></p>     <p align="justify"><font face="verdana" size="2">Belize pine and oak forests ecoregion: Dinerstein <i>et al.</i> 1995: 103.</font></p>     <p align="justify"><font face="verdana" size="2">Eastern Mexican grasslands ecoregion: Dinerstein <i>et al.</i> 1995: 104.</font></p>     <p align="justify"><font face="verdana" size="2">Tabasco and Veracruz savannas ecoregion: Dinerstein <i>et al.</i> 1995: 104.</font></p>     <p align="justify"><font face="verdana" size="2">Veracruz palm savannas ecoregion: Dinerstein <i>et al.</i> 1995: 106.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Norte de Chiapas province: Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra de los Tuxtlas province: Escalante <i>et al.</i> 1998: 285; Campbell, 1999: 116.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Coast of the Mexican Gulf, in eastern Mexico, Belize, and northern Guatemala.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. MAGNOLIOPHYTA. Magnoliopsida</b>. Scrophulariales. Scrophulariaceae: <i>Tetranema roseum</i> (M&eacute;ndez&#45;Larios &amp; Villase&ntilde;or, 1995). <b>ARTHROPODA. Hexapoda</b>. Coleoptera. Attelabidae: <i>Pilolabus purpureus</i> and <i>P. splendens</i> (Hamilton, 1994); Curculionidae: <i>Caecossonus sylvaticus</i> (Howden, 1992); Heteroceridae: <i>Heterocerus crossi</i> (Miller, 1995); Pselaphidae: <i>Eutrichites veracruzensis</i> (Carlton, 1989); Scarabaeidae: <i>Cotinis punctatostriata</i> (Deloya &amp; Ratcliffe, 1988). Lepidoptera. Papilionidae: <i>Troilides tolus</i> (Llorente <i>et al.</i> 1997); Pieridae: <i>Dismorphia eunoe popoluca</i> (Llorente <i>et al.</i> 1997). Orthoptera. Pyrgomorphidae: <i>Sphenarium m. mexicanum</i> (Kevan, 1977). <b>VERTEBRATA. Actinopterygii</b>. Cyprinodontiformes. Poecilidae: <i>Gambusia eurystoma</i> (Lydeard <i>et al.</i> 1995). <b>Amphibia</b>. Anura. Hylidae: <i>Hyla ebraccata</i> and <i>H. microcephala</i> (M&uuml;ller, 1973). <b>Squamata</b>. Anguidae: <i>Celestus eneagramus</i> (Arriaga <i>et al.</i> 1997); Elapidae: <i>Micrurus elegans</i> and <i>M. limbatus</i> (Campbell &amp; Lamar, 1989). <b>Aves</b>. Strigiformes. Caprimulgidae: <i>Caprimulgus maculicaudus</i> (Arriaga <i>et al.</i> 1997). <b>Mammalia</b>. Didelphimorphia. Didelphidae: <i>Caluromys derbianus aztecus</i> (Arriaga <i>et al.</i> 1997). Rodentia. Dasyproctidae: <i>Dasyprocta mexicana</i> (M&uuml;ller, 1973); Muridae: <i>Peromyscus leucopus incensus</i> (Arriaga <i>et al.</i> 1997).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Mexican Pacific Coast province</b></font></p>     <p align="justify"><font face="verdana" size="2">Tapachultecan province: Smith, 1941: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Tehuanan province: Smith, 1941: 110.</font></p>     <p align="justify"><font face="verdana" size="2">Nayarit&#45;Guerrero province: Goldman &amp; Moore, 1945: 355.</font></p>     <p align="justify"><font face="verdana" size="2">Tehuantepec province: Goldman &amp; Moore, 1945: 358; Barrera, 1962: 101.</font></p>     <p align="justify"><font face="verdana" size="2">Escuintla&#45;Usulut&aacute;n province: Ryan, 1963: 24.</font></p>     <p align="justify"><font face="verdana" size="2">Revillagigedo Islands province: Goldman &amp; Moore, 1945: 352; Rzedowski, 1978: 108; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map; Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">Chinandegan province: Ryan, 1963: 27.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Mexican Xeric province, in part: Cabrera &amp; Willink, 1973: 34.</font></p>     <p align="justify"><font face="verdana" size="2">Central American Pacific center: M&uuml;ller, 1973: 19.</font></p>     <p align="justify"><font face="verdana" size="2">Pacific Coast province: Rzedowski, 1978: 107; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map; Arriaga <i>et al.</i> 1997: 62; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Western Mexican province: Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Pacific province: Ferrusqu&iacute;a&#45;Villafranca, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Nayarit province: Ferrusqu&iacute;a&#45;Villafranca, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Jaliscoan&#45;Guerrerense province: Ferrusqu&iacute;a&#45;Villafranca, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Guerrerense province: Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Oaxaca Moist Forests ecoregion: Dinerstein <i>et al.</i> 1995: 91.</font></p>     <p align="justify"><font face="verdana" size="2">Sinaloa Dry Forests ecoregion: Dinerstein <i>et al.</i> 1995: 99.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Jalisco Dry Forests ecoregion: Dinerstein <i>et al.</i> 1995: 99.</font></p>     <p align="justify"><font face="verdana" size="2">Pacific Central American Dry Forests ecoregion: Dinerstein <i>et al.</i> 1995: 99.</font></p>     <p align="justify"><font face="verdana" size="2">Jalisco Palm Savannas ecoregion: Dinerstein <i>et al.</i> 1995: 106.</font></p>     <p align="justify"><font face="verdana" size="2">Tierras Bajas del Istmo province: Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">Southern Costa Este province: Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">Tres Mar&iacute;as Islands province: Escalante <i>et al.</i> 1998: 285.</font></p>     <p align="justify"><font face="verdana" size="2">Pacific Lowlands province: Campbell, 1999: 117.</font></p>     <p align="justify"><font face="verdana" size="2">Mexican Pacific Coast province; Morrone, 2001a: 51, 2001b: 40.</font></p>     <p align="justify"><font face="verdana" size="2">Western Mexico, in the Pacific coast of the states of Sinaloa, Nayarit, Colima, Jalisco, Michoac&aacute;n, Guerrero, Oaxaca, and Chiapas.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. MAGNOLIOPHYTA. Liliopsida</b>. Poales. Poaceae: <i>Gouninia isabelensis</i> (Ortiz&#45;D&iacute;az, 1993). <b>Magnoliopsida</b>. Asterales. Asteraceae: <i>Montanoa andersonii, M. laskowskii</i>, and <i>M. standleyi</i> (Funk, 1982). Sapindales. Burseraceae: <i>Bursera arborea</i>, <i>B. attenuata</i>, and <i>B. excelsa</i> (Rzedowski, 1978; Kohlman &amp; S&aacute;nchez, 1984). <b>ARTHROPODA. Hexapoda</b>. Coleoptera: Attelabidae: <i>Euscelus rufiventris</i> (Hamilton, 1997); Curculionidae: <i>Tyloderma affine</i> (Wibmer, 1989); Scarabaeidae: <i>Onthophagus solisi</i> and <i>Viridimicus cyanochlorus</i> (Jameson, 1990; G&eacute;nier &amp; Howden, 1999). Diptera. Ropalomeridae: <i>Mexicoa mexicana</i> (Ram&iacute;rez&#45;Garc&iacute;a &amp; Hern&aacute;ndez&#45;Ortiz, 1994); Simuliidae: <i>Simulium pseudocallidum</i> and <i>S. veracruzanum</i> (Coscar&oacute;n <i>et al.</i> 1996). Hymenoptera. Apidae: <i>Geotrigona acapulconis</i> (Camargo &amp; Moure, 1996). Lepidoptera. Papilionidae: <i>Battus eracon, Mimoides ilus occiduus</i>, and <i>Pyrrhostica abderus baroni</i> (Llorente <i>et al.</i> 1997); Pieridae: <i>Dismorphia amphiona lupita, D. a. isolda, D. crisia alvarezi, Enantia lina</i> ssp., <i>Pieriballia viardi</i>, and <i>Prestonia clarki</i> (Llorente <i>et al.</i> 1997). Orthoptera. Pyrgomorphidae: <i>Ichthiacris elongata</i> (Kevan, 1977). <b>VERTEBRATA. Amphibia</b>. Anura. Hylidae: <i>Hyla robertmertensi</i> and <i>H. sartori</i> (M&uuml;ller, 1973; Savage, 1982). <b>Squamata</b>. Viperidae: <i>Bothrops langsbergi aphryomegas</i> and <i>Crotalus basiliscus</i> (M&uuml;ller, 1973; Campbell &amp; Lamar, 1989). <b>Aves</b>. Craciformes. Cracidae: <i>Ortalis wagleri</i> (Arriaga <i>et al.</i> 1997). Galliformes. Phasianidae: <i>Callipepla douglasi</i> (Arriaga <i>et al.</i>, 1997). Psittaciformes. Psittacidae: <i>Amazona finschi</i> (Arriaga <i>et al.</i>, 1997). <b>Mammalia</b>. Lagomorpha. Leporidae: <i>Lepus flavigularis</i> (M&uuml;ller, 1973). Rodentia. Geomyidae: <i>Orthogeomys grandis</i> sspp. (Arriaga <i>et al.</i> 1997); Sciuridae: <i>Sciurus colliaei</i> (Arriaga <i>et al.</i> 1997).</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Yucat&aacute;n Peninsula province</b></font></p>     <p align="justify"><font face="verdana" size="2">Yucat&aacute;n peninsula province: Smith, 1941: 110; Goldman &amp; Moore, 1945: 360; Ryan, 1963: 22; Rzedowski, 1978: 109; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map; Morrone, 2001a: 51, 2001b: 43.</font></p>     <p align="justify"><font face="verdana" size="2">Pet&eacute;n province: Smith, 1941: 110; Barrera, 1962: 101; Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map; Arriaga <i>et al.</i> 1997: 63; Escalante <i>et al.</i> 1998: 285; Morrone <i>et al.</i>, 1999: 510; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Yucat&aacute;n province: Barrera, 1962: 79; Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map; Ferrusqu&iacute;a&#45;Villafranca, 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map; Arriaga <i>et al.</i> 1997: 63; Escalante <i>et al.</i> 1998: 285; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Yucat&aacute;n center: M&uuml;ller, 1973: 16.</font></p>     <p align="justify"><font face="verdana" size="2">Campeche&#45;Pet&eacute;n province: Ferrusqu&iacute;a&#45;Villafranca, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Yucat&aacute;n dry forests ecoregion: Dinerstein <i>et al.</i> 1995: 99.</font></p>     <p align="justify"><font face="verdana" size="2">Yucat&aacute;n moist forests ecoregion: Dinerstein <i>et al.</i> 1995: 91.</font></p>     <p align="justify"><font face="verdana" size="2">Quintana Roo wetlands ecoregion: Dinerstein <i>et al.</i> 1995: 106.</font></p>     <p align="justify"><font face="verdana" size="2">Cozumel&#45;Islas Mujeres province: Escalante <i>et al.</i> 1998: 285.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Yucat&aacute;n peninsula, in the states of Campeche, Yucat&aacute;n, and Quintana Roo, below 200 m altitude.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. MAGNOLIOPHYTA. Liliopsida</b>. Poales. Poaceae: <i>Gouninia latifolia</i> var. <i>guatemalensis</i> and <i>G. papillosa</i> (Ortiz&#45;D&iacute;az, 1993). <b>Magnoliopsida</b>. Fabales. Fabaceae: <i>Caesalpinia gaumeri, Pithecelobium lanceolatum</i>, and <i>P. graciliflorum</i> (Rzedowski, 1978; Arriaga <i>et al.</i> 1997; Espinosa <i>et al.</i>, 2000). <b>ARTHROPODA. Hexapoda</b>. Coleoptera. Carabidae: <i>Amblygnathus subtinctus</i> and <i>Pasimachus purpuratus</i> (Nichols, 1988; Espinosa <i>et al.</i> 2000); Chrysomelidae: <i>Ophraella notullata</i> (Espinosa <i>et al.</i> 2000); Curculionidae: <i>Caecossonus continuus</i> (Howden, 1992); Elateridae: <i>Conoderus pilatei</i> (Johnson, 1995); Staphylinidae: <i>Bledius punctatissimus</i> (Espinosa <i>et al.</i> 2000). Lepidoptera. Papilionidae: <i>Priamides phanases</i> and <i>P. rogeri</i> (Llorente <i>et al.</i> 1997; Espinosa <i>et al.</i> 2000). <b>VERTEBRATA. Squamata</b>. Iguanidae: <i>Enyaliosaurus defensor</i> and <i>Sceloporus cozumelae</i> (Savage, 1982; Arriaga <i>et al.</i> 1997); Viperidae: <i>Bothrops yucatannicus</i> (M&uuml;ller, 1973). <b>Aves</b>. Passeriformes. Certhiidae: <i>Campylorhynchus yucatanicus</i> (M&uuml;ller, 1973); Tyrannidae: <i>Myarchus yucatanensis</i> (M&uuml;ller, 1973). <b>Aves</b>. Columbiformes. Columbidae: <i>Leptotila jamaicensis gaumeri</i> (Arriaga <i>et al.</i> 1997). Galliformes. Phasianidae: <i>Colinus nigrogularis</i> and <i>Meleagris ocellata</i> (Arriaga <i>et al.</i> 1997). Passeriformes. Certiidae: <i>Campylorhynchus yucatanicus</i> (Espinosa <i>et al.</i> 2000). Piciformes. Picidae: <i>Melenerpes rubricapillus</i> (Espinosa <i>et al.</i> 2000). Psittaciformes. Psittacidae: <i>Amazona xanthoclora</i> (Arriaga <i>et al.</i> 1997). Strigiformes. Caprimulgidae: <i>Caprimulgus badius</i> (Espinosa <i>et al.</i> 2000). <b>Mammalia</b>. Carnivora. Procyonidae: <i>Nasua nasua yucatanica</i> (Arriaga <i>et al.</i> 1997). Insectivora. Soricidae: <i>Cryptotis mayensis</i> (Barrera, 1962). Primates. Cebidae: <i>Alouatta pigra</i> (Emmons, 1990). Rodentia. Heteromyidae: <i>Heteromys gaumeri</i> (Barrera, 1962); Muridae: <i>Otonyctomys hatti</i> and <i>Peromyscus yucatanicus</i> (Barrera, 1962; Aranda <i>et al.</i> 1997); Sciuridae: <i>Sciurus yucatanensis</i> (Barrera, 1962).</font></p>     <p align="justify"><font face="verdana" size="2"><b>Chiapas province</b></font></p>     <p align="justify"><font face="verdana" size="2">Chiapas Plateau province: Smith, 1941: 109.</font></p>     <p align="justify"><font face="verdana" size="2">Chiapas Highlands province: Goldman &amp; Moore, 1945: 359; Arriaga <i>et al.</i> 1997: 66; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Chiapas province: Barrera, 1962: 101; Ferrusqu&iacute;a&#45;Villafranca, 1990: map; Ram&iacute;rez&#45;Pulido &amp; Castro&#45;Campillo, 1990: map; Morrone <i>et al.</i> 1999: 510; Morrone, 2001a: 52, 2001b: 45.</font></p>     <p align="justify"><font face="verdana" size="2">Chiapan&#45;Guatemalan Highlands province: Ryan, 1963: 23; Campbell, 1999: 116.</font></p>     <p align="justify"><font face="verdana" size="2">Nicaraguan Montane province: Ryan, 1963: 28.</font></p>     <p align="justify"><font face="verdana" size="2">Central American montane forest center: M&uuml;ller, 1973: 14.</font></p>     <p align="justify"><font face="verdana" size="2">Guatemalan Montane Forest subcenter: M&uuml;ller, 1973: 14.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Serran&iacute;as Trans&iacute;smicas province: Rzedowski, 1978: 103; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Soconusco province: Rzedowski, 1978: 109; Rzedowski &amp; Reyna&#45;Trujillo, 1990: map; Arriaga <i>et al.</i> 1997: 66; Morrone <i>et al.</i> 1999: 510; Espinosa <i>et al.</i> 2000: 64.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre de Chiapas province: Casas&#45;Andreu &amp; Reyna&#45;Trujillo, 1990: map.</font></p>     <p align="justify"><font face="verdana" size="2">Sierra Madre Moist Forests ecoregion: Dinerstein <i>et al.</i> 1995: 92.</font></p>     <p align="justify"><font face="verdana" size="2">Central American Montane Forests ecoregion: Dinerstein <i>et al.</i> 1995: 92.</font></p>     <p align="justify"><font face="verdana" size="2">Central American Pine and Oak forests ecoregion: Dinerstein <i>et al.</i> 1995: 103.</font></p>     <p align="justify"><font face="verdana" size="2">Tehuantepec Savannas ecoregion: Dinerstein <i>et al.</i> 1995: 104.</font></p>     <p align="justify"><font face="verdana" size="2">Motagua Valley Xeric Shrublands ecoregion: Dinerstein <i>et al.</i> 1995: 111.</font></p>     <p align="justify"><font face="verdana" size="2">Southern Mexico, Guatemala, and Nicaragua, basically corresponding to the Sierra Madre de Chiapas, from 500 to 2,000 m altitude.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Taxa. MAGNOLIOPHYTA. Magnoliopsida</b>. Asterales. Asteraceae: <i>Chionolaena sartorii, Montanoa echinacea, M. guatemalensis</i>, and <i>M. pteropoda</i> (Funk, 1982; Freire, 1993). Fabales. Fabaceae: <i>Leucaena greggii</i> (Espinosa <i>et al.</i> 2000); Haloragales. Gunneraceae: <i>Gunnera kilipiana</i> (Rzedowski, 1978). Scrophulariales. Scrophulariaceae: <i>Tetranema evolutum</i> (M&eacute;ndez&#45;Larios &amp; Villase&ntilde;or, 1995). Urticales. Cecropiaceae: <i>Cecropia sylvicola</i> (Franco &amp; Berg, 1997). <b>ANNELIDA. Oligochaeta</b>. Acanthodrilidae: <i>Lavellodrilus</i> (Fragoso, 1988). <b>ARTHROPODA. Arachnida</b>. Opiliones. Caddidae: <i>Acropsopilio chomulae</i> (Kury &amp; Cokendolpher, 2000); Sclerosomatidae: <i>Geaya lineata</i> (Kury &amp; Cokendolpher, 2000). <b>Hexapoda</b>. Archaeognatha. Meinertellidae: <i>Machilinus mexicanus</i> (Sturm, 1997). Coleoptera: Cerambycidae: <i>Aneflus poriferus, Eburia schusteri, Megapsyrassa testacea, M. chiapaneca, Oxycoleus piceus, Pachymerola wappesi, Rhodoleptus nigripennis</i>, and <i>Semanotus australis</i> (Giesbert, 1994); Cleridae: <i>Enoclerus gabriellae</i> (Rifkind, 1994); Curculionidae: <i>Hadromeropsis scintillans</i> and <i>Phymatophosus scapularis</i> (Espinosa <i>et al.</i> 2000); Passalidae: <i>Ogyges</i> and <i>Petrejoides guatemalae</i> (Castillo &amp; Reyes&#45;Castillo, 1984; Schuster &amp; Reyes&#45;Castillo, 1990); Scarabaeidae: <i>Apeltastes chiapasensis, Geotrupes pilanolensis, Golofa championi</i>, <i>Hologymnetis kinichahau, Trigonopletastes glabella</i>, and <i>Viridimicus aurescens</i> (Jameson, 1990; Ratcliffe &amp; Deloya, 1992; Howden, 1988, 1994a, b; Mor&oacute;n, 1995); Staphylinidae: <i>Bledius strenuus, Gansia andersoni, G. fortemaculata, G. tibialis</i>, and <i>Styngetus championi</i> (Ashe &amp; Lingafelter, 1995; Navarrete&#45;Heredia, 1997; Espinosa <i>et al.</i> 2000). Heteroptera. Lygaeidae: <i>Toonglasa indomita</i> (Slater &amp; Brailovsky, 1994); Miridae: <i>Atractotomus teopisca</i> (Stonedahl &amp; Schwartz, 1994). Lepidoptera. Papilionidae: <i>Baronia brevicornis rufodiscalis</i>, <i>Parides panares lycimenes</i>, and <i>Priamides e. erostratus</i> (Llorente <i>et al.</i> 1997); Pieridae: <i>Colias alexandra harfordii, C. philodice, Dismorphia eunoe chamula, D. e. eunoe, Perrhybris pamela chajuelnsis</i>, and <i>Pseudopieris nehemia irma</i> (Llorente <i>et al.</i> 1997). Megaloptera. Corydalidae: <i>Platyneuromus honduranus</i> and <i>P. reflexus</i> (Contreras&#45;Ramos, 2000). Orthoptera. Pyrgomorphidae: <i>Prosphena scudderi</i> and <i>Sphenarium mexicanum histrio</i> (Kevan, 1977). <b>VERTEBRATA. Amphibia</b>. Anura. Ranidae: <i>Rana maculata</i> (Arriaga <i>et al.</i> 1997). Urodela. Pletodontidae: <i>Nototriton barbouri, N. nasalis</i>, and <i>N. veraepacis</i> (Papenfuss &amp; Wake, 1987). <b>Squamata</b>. Iguanidae: <i>Enyaliosaurus palearis</i> and <i>Sceloporus malachitichus</i> (Savage, 1982); Anguidae: <i>Abronia ochoterenai</i> (Arriaga <i>et al.</i> 1997). <b>Aves</b>. Passeriformes. Furnariidae: <i>Dendrocolaptes picumnus</i> (Arriaga <i>et al.</i> 1997); Muscicapidae: <i>Turdus plebejus</i> (Arriaga <i>et al.</i> 1997). Picicformes. Picidae: <i>Picoides pubescens</i> (Espinosa <i>et al.</i> 2000). Strigiformes. Strigidae: <i>Otus barbatus</i> (Arriaga <i>et al.</i> 1997). <b>Mammalia</b>. Rodentia. Muridae: <i>Peromyscus aztecus oaxacensis</i> (Sullivan <i>et al.</i> 1997).</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Discussion</b></font></p>     <p align="justify"><font face="verdana" size="2">Our scheme differs from all the previously published ones, although it is very similar to the scheme of Arriaga <i>et al.</i> (1997). We discuss herein the main differences with it.</font></p>     <p align="justify"><font face="verdana" size="2">Arriaga <i>et al.</i> (1997) recognized two distinct provinces within what we treat herein as the Baja California province: Baja California (lowlands along the peninsula of Baja California, excluding the northwestern and southernmost portions), and Cabo (Sierra San Lorenzo and adjacent areas at the southernmost part of the peninsula). In a previous analysis, we (Morrone <i>et al.</i> 1999) found them to be closely related; based on their common taxa, we believe that a separate province status is not warranted, although future studies may determine that they can be treated as districts, based on their ecological differences.</font></p>     <p align="justify"><font face="verdana" size="2">Arriaga <i>et al.</i> (1997) considered two distinct provinces within the Mexican Plateau province: Northern Mexican Plateau (including the Chihuahuan desert and the Bols&oacute;n de Mapim&iacute;, extending southward to the Nazas river) and Southern Mexican Plateau (from the Nazas river extending southwards into the Mezquital valley, next to Transmexican Volcanic Belt ranges). There are no taxa that justify that they can be considered as distinct provinces, thus we decided to lump them into a single province.</font></p>     <p align="justify"><font face="verdana" size="2">Arriaga <i>et al.</i> (1997) recognized two separate provinces within the Yucat&aacute;n Peninsula province: Yucat&aacute;n (including the most arid lands at the northwestern part of the peninsula, mainly covered by tropical deciduous forests) and Pet&eacute;n (in the southeastern part of the peninsula, dominated by both tropical semideciduous and rain forests). Although there are a few taxa endemic to each of them (Espinosa <i>et al.</i> 2000), their basic distinction is mainly ecological, so a separate province status does not seem appropriate.</font></p>     <p align="justify"><font face="verdana" size="2">Arriaga <i>et al.</i> (1997) recognized two provinces within our Chiapas province: Chiapas (in the Sierra Norte of Chiapas) and Soconusco (in Sierra Madre of Chiapas). Future studies should be addressed to determine whether they can be treated as districts, based on ecological differences.</font></p>     <p align="justify"><font face="verdana" size="2">In addition to the delimitation of the Mexican biogeographic provinces, their classification into subregions and regions is still a controversial issue (see Espinosa <i>et al.</i> 2000 for a historical review). In our previous analysis (Morrone <i>et al.</i> 1999), we assigned the Mexican biogeographic provinces to the Nearctic and Neotropical regions, however, a track analysis (Morrone, 2001a, b) showed that some of the provinces assigned to the Nearctic region were in fact better placed in the Neotropical region. The revised classification of the Mexican biogeographic provinces herein adopted is as follows: (1) Nearctic region: California, Baja California, Sonora, Mexican Plateau, and Tamaulipas provinces; and (2) Neotropical region: Sierra Madre Occidental, Sierra Madre Oriental, Transmexican Volcanic Belt, Balsas Basin, Sierra Madre del Sur, Mexican Gulf, Mexican Pacific Coast, Yucat&aacute;n Peninsula, and Chiapas provinces.</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Acknowledgments</b></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Economic support by CONACyT 32002, DGAPA&#45;Papiit IN205799 (UNAM) and National Geographic grant 6590&#45;99 is gratefully acknowledged.</font></p>     <p align="justify"><font face="Verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Literature cited</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>&Aacute;lvarez&#45;Casta&ntilde;eda, S. T., C. A. Salinas&#45;Zavala &amp; F. de Lachica</b>. 1995. An&aacute;lisis biogeogr&aacute;fico del noroeste de M&eacute;xico con &eacute;nfasis en la variaci&oacute;n clim&aacute;tica y mastozool&oacute;gica. <i>Acta Zool. Mex. (n.s.)</i> 66: 59&#45;86.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=299517&pid=S0065-1737200200010000500001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2"><b>Amorim, D. S. &amp; S. H. S. Tozoni</b>. 1994. Phylogenetic and biogeographic analysis of the Anisopodoidea (Diptera, Bibionomorpha), with an area cladogram for intercontinental relationships. <i>Rev. Bras. 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