La rana de cristal Cochranella mache es un anfibio endémico del noroccidente de Ecuador, solo habita en las montañas de Mache en la Cordillera de Costa. En un reciente artículo (Cisneros-Heredia et al. 2010), publicado en la revista Oryx, The International Journal of Conservation, se revisa el rango geográfico de la especie y su actual estado de conservación. Este artículo recomienda la clasificación de esta especie de rana de cristal bajo la categoría IUCN de "Peligro Crítico" debido a su precario estado de conservación, al parecer causado por cambios climáticos locales producidos por la extensiva destrucción de los bosques.
Mostrando entradas con la etiqueta Centrolenidae. Mostrar todas las entradas
Mostrando entradas con la etiqueta Centrolenidae. Mostrar todas las entradas
13 diciembre 2009
Rana de Cristal en Peligro Crítico de Extinción por pérdida de hábitat
La rana de cristal Cochranella mache es un anfibio endémico del noroccidente de Ecuador, solo habita en las montañas de Mache en la Cordillera de Costa. En un reciente artículo (Cisneros-Heredia et al. 2010), publicado en la revista Oryx, The International Journal of Conservation, se revisa el rango geográfico de la especie y su actual estado de conservación. Este artículo recomienda la clasificación de esta especie de rana de cristal bajo la categoría IUCN de "Peligro Crítico" debido a su precario estado de conservación, al parecer causado por cambios climáticos locales producidos por la extensiva destrucción de los bosques. 
27 julio 2009
New Taxonomy Centrolenidae
Phylogenetic systematics of Glassfrogs (Amphibia: Centrolenidae) and their sister taxon Allophryne ruthveni
Abstract.-- Based on a molecular phylogeny, a new phylogenetic taxonomy that is compatible with both the International Code of Zoological Nomenclature (ICZN) and the PhyloCode is proposed for Glassfrogs and their sister taxon, Allophryne ruthveni. The arrangement presented herein emphasizes the recognition of clades having (i) significant statistical support and congruence among phylogenetic estimation methods (i.e., parsimony, maximum likelihood, and Bayesian inference criteria), (ii) congruence among genetic markers, and (iii) morphological and/or behavioral distinctiveness. Also, when previously recognized groups are recovered as monophyletic or nearly monophyletic, we propose taxa that minimize the number of name changes required to make these groups monophyletic, preserving the names and contents of previous classifications (i.e., nomenclatural stability). The evolutionary proximity of Centrolenidae and Allophrynidae is recognized by combining these families into an unraked taxon, Allocentroleniae—a proposal that maintains the traditional names and species contents of Centrolenidae and Allophrynidae. We arrange centrolenid diversity in two subfamilies: Centroleninae and Hyalinobatrachinae. Within Centroleninae, the diagnosis and species content of the genera Centrolene, Cochranella, and Nymphargus are modified; Teratohyla is resurrected and modified, and Chimerella, Espadarana, Rulyrana, Sachatamia, and Vitreorana are proposed as new genera. The other subfamily, Hyalinobatrachinae, contains the new genus Celsiella and a modified Hyalinobatrachium that fully corresponds to the former fleischmanni Group. Additionally, the genus Ikakogi is described. Ikakogi could not be assigned with confidence to either subfamily and it is placed as incertae sedis in Centrolenidae. The data at hand suggest that Ikakogi tayrona is a lineage as old as the subfamilies Hyalinobatrachinae and Centroleninae. The revised taxonomy differs markedly from previous arrangements, which were based on phenetics and few morphological characters. Most of the genera defined herein are confined to distinct biogeographic regions, highlighting the importance of geography in the speciation of Glassfrogs. The principal limitation of this proposal is that it is based on an incomplete sampling of taxa (54% of the recognized Glassfrogs). Although diagnoses are based on phenotypic traits, there are several cases (16% of all species) in which the allocation of species is ambiguous because of morphological homoplasy and the lack of molecular data. Finally, in an attempt to facilitate species identification, comparison, and generic placement, we provide photographs for most (~ 96%) of the recognized centrolenid species.
Cita / Citation: Guayasamin, J. M., S. Castroviejo-Fisher, L. Trueb, J. Ayarzagüena, M. Rada, y C. Vilà. (2009) Phylogenetic systematics of glassfrogs (Amphibia: Centrolenidae) and their sister taxon Allophryne ruthveni. Zootaxa 2100:1-97.
Mas información: http://www.mapress.com/zootaxa/2009/f/zt02100p097.pdf
Abstract.-- Based on a molecular phylogeny, a new phylogenetic taxonomy that is compatible with both the International Code of Zoological Nomenclature (ICZN) and the PhyloCode is proposed for Glassfrogs and their sister taxon, Allophryne ruthveni. The arrangement presented herein emphasizes the recognition of clades having (i) significant statistical support and congruence among phylogenetic estimation methods (i.e., parsimony, maximum likelihood, and Bayesian inference criteria), (ii) congruence among genetic markers, and (iii) morphological and/or behavioral distinctiveness. Also, when previously recognized groups are recovered as monophyletic or nearly monophyletic, we propose taxa that minimize the number of name changes required to make these groups monophyletic, preserving the names and contents of previous classifications (i.e., nomenclatural stability). The evolutionary proximity of Centrolenidae and Allophrynidae is recognized by combining these families into an unraked taxon, Allocentroleniae—a proposal that maintains the traditional names and species contents of Centrolenidae and Allophrynidae. We arrange centrolenid diversity in two subfamilies: Centroleninae and Hyalinobatrachinae. Within Centroleninae, the diagnosis and species content of the genera Centrolene, Cochranella, and Nymphargus are modified; Teratohyla is resurrected and modified, and Chimerella, Espadarana, Rulyrana, Sachatamia, and Vitreorana are proposed as new genera. The other subfamily, Hyalinobatrachinae, contains the new genus Celsiella and a modified Hyalinobatrachium that fully corresponds to the former fleischmanni Group. Additionally, the genus Ikakogi is described. Ikakogi could not be assigned with confidence to either subfamily and it is placed as incertae sedis in Centrolenidae. The data at hand suggest that Ikakogi tayrona is a lineage as old as the subfamilies Hyalinobatrachinae and Centroleninae. The revised taxonomy differs markedly from previous arrangements, which were based on phenetics and few morphological characters. Most of the genera defined herein are confined to distinct biogeographic regions, highlighting the importance of geography in the speciation of Glassfrogs. The principal limitation of this proposal is that it is based on an incomplete sampling of taxa (54% of the recognized Glassfrogs). Although diagnoses are based on phenotypic traits, there are several cases (16% of all species) in which the allocation of species is ambiguous because of morphological homoplasy and the lack of molecular data. Finally, in an attempt to facilitate species identification, comparison, and generic placement, we provide photographs for most (~ 96%) of the recognized centrolenid species.
Cita / Citation: Guayasamin, J. M., S. Castroviejo-Fisher, L. Trueb, J. Ayarzagüena, M. Rada, y C. Vilà. (2009) Phylogenetic systematics of glassfrogs (Amphibia: Centrolenidae) and their sister taxon Allophryne ruthveni. Zootaxa 2100:1-97.
Mas información: http://www.mapress.com/zootaxa/2009/f/zt02100p097.pdf
Phylogenetic relationships of glassfrogs (Centrolenidae) based on mitochondrial and nuclear genes
Abstract.-- Glassfrogs (family Centrolenidae) represent an exceptionally diverse group among Neotropical anurans, but their evolutionary relationships never have been assessed from a molecular perspective. Mitochondrial and nuclear markers were used to develop a novel hypothesis of centrolenid phylogeny. Ingroup sampling included 100 terminals, with 78 (53%) of the named species in the family, representing most of the phenotypic diversity described for the group. Thirty-five species representing taxa traditionally associated with glassfrogs were used as outgroups. Gene sampling consisted of complete or partial sequences of three mitochondrial (12S, 16S, ND1) and three nuclear markers (c-myc exon 2, RAG1, POMC) for a total of approximately 4362bp. Phylogenies were estimated using maximum parsimony, maximum likelihood, and Bayesian analyses for individual genes and combined datasets. The separate analysis of mitochondrial and nuclear datasets allowed us to clarify the relationships within glassfrogs; also, we corroborate the sister-group relationship between Allophryne ruthveni and glassfrogs. The new phylogeny differs significantly from all previous morphology-based hypotheses of relationships, and shows that hypotheses based on few traits are likely to misrepresent evolutionary history. Traits previously hypothesized as unambiguous synapomorphies are shown to be homoplastic, and all genera in the current taxonomy (Centrolene, Cochranella, Hyalinobatrachium, Nymphargus) are found to be poly- or paraphyletic. The new topology implies a South American origin of glassfrogs and reveals allopatric speciation as the most important speciation mechanism. The phylogeny profoundly affects the traditional interpretations of glassfrog taxonomy, character evolution, and biogeography-topics that now require more extensive evaluation in future studies..
Cita / Citation: Guayasamin, J. M., S. Castroviejo-Fisher, J. Ayarzagüena, L. Trueb y C. Vilà. (2008) Phylogenetic relationships of glassfrogs (Centrolenidae) based on mitochondrial and nuclear genes. Molecular Phylogenetics and Evolution 48:574-595.
Mas información: http://www.puce.edu.ec/zoologia/vertebrados/personal/colaboradores/jmguayasamin/index.html
Abstract.-- Glassfrogs (family Centrolenidae) represent an exceptionally diverse group among Neotropical anurans, but their evolutionary relationships never have been assessed from a molecular perspective. Mitochondrial and nuclear markers were used to develop a novel hypothesis of centrolenid phylogeny. Ingroup sampling included 100 terminals, with 78 (53%) of the named species in the family, representing most of the phenotypic diversity described for the group. Thirty-five species representing taxa traditionally associated with glassfrogs were used as outgroups. Gene sampling consisted of complete or partial sequences of three mitochondrial (12S, 16S, ND1) and three nuclear markers (c-myc exon 2, RAG1, POMC) for a total of approximately 4362bp. Phylogenies were estimated using maximum parsimony, maximum likelihood, and Bayesian analyses for individual genes and combined datasets. The separate analysis of mitochondrial and nuclear datasets allowed us to clarify the relationships within glassfrogs; also, we corroborate the sister-group relationship between Allophryne ruthveni and glassfrogs. The new phylogeny differs significantly from all previous morphology-based hypotheses of relationships, and shows that hypotheses based on few traits are likely to misrepresent evolutionary history. Traits previously hypothesized as unambiguous synapomorphies are shown to be homoplastic, and all genera in the current taxonomy (Centrolene, Cochranella, Hyalinobatrachium, Nymphargus) are found to be poly- or paraphyletic. The new topology implies a South American origin of glassfrogs and reveals allopatric speciation as the most important speciation mechanism. The phylogeny profoundly affects the traditional interpretations of glassfrog taxonomy, character evolution, and biogeography-topics that now require more extensive evaluation in future studies..
Cita / Citation: Guayasamin, J. M., S. Castroviejo-Fisher, J. Ayarzagüena, L. Trueb y C. Vilà. (2008) Phylogenetic relationships of glassfrogs (Centrolenidae) based on mitochondrial and nuclear genes. Molecular Phylogenetics and Evolution 48:574-595.
Mas información: http://www.puce.edu.ec/zoologia/vertebrados/personal/colaboradores/jmguayasamin/index.html
Cochranella mcdiarmidi sp. nov.
A New Species of Glassfrog (Anura: Centrolenidae) from the Foothill Andean Forests of Ecuador and Peru
Abstract.-- We describe a new species of glassfrog assigned to the genus Cochranella (Amphibia: Anura: Athesphatanura: Centrolenidae) from the Foothill Evergreen forests on the southeastern Andean slopes of Ecuador and northeastern Andean slopes of Peru. The new species is characterized by its moderate-sized body (25.4–26.9 mm in adult males), medium-sized eyes (eye diameter/third disc width
= 1.4–1.9), distinctive coloration in life (olive green with light spots) and in preservative (grayish lavender with pale spots), dorsal skin covered with flat warts and low tubercles, parietal peritoneum mostly white (covered by iridophores), thick ulnar folds, and extensive hand and foot webbing. In addition, we provide the first record of Nymphargus posadae from Peru, found in sympatry with the new species at the Cordillera del Cóndor..
Cita / Citation: Cisneros-Heredia, D.F., P. J. Venegas, M. Rada & R. Schulte. 2008. A new species of Glassfrog (Anura, Centrolenidae) from the Foothill Andean forests of Ecuador and Peru. Herpetologica 64(3): 342-353..
Mas información: http://www.cisneros-heredia.org/public
Abstract.-- We describe a new species of glassfrog assigned to the genus Cochranella (Amphibia: Anura: Athesphatanura: Centrolenidae) from the Foothill Evergreen forests on the southeastern Andean slopes of Ecuador and northeastern Andean slopes of Peru. The new species is characterized by its moderate-sized body (25.4–26.9 mm in adult males), medium-sized eyes (eye diameter/third disc width
= 1.4–1.9), distinctive coloration in life (olive green with light spots) and in preservative (grayish lavender with pale spots), dorsal skin covered with flat warts and low tubercles, parietal peritoneum mostly white (covered by iridophores), thick ulnar folds, and extensive hand and foot webbing. In addition, we provide the first record of Nymphargus posadae from Peru, found in sympatry with the new species at the Cordillera del Cóndor..Cita / Citation: Cisneros-Heredia, D.F., P. J. Venegas, M. Rada & R. Schulte. 2008. A new species of Glassfrog (Anura, Centrolenidae) from the Foothill Andean forests of Ecuador and Peru. Herpetologica 64(3): 342-353..
Mas información: http://www.cisneros-heredia.org/public
23 julio 2008
Centrolene condor sp. nov.
A new species of glassfrog from the elfin forests of the Cordillera del Cóndor, southeastern Ecuador (Anura: Centrolenidae)
Abstract.-- We describe a new species of glassfrog of the genus Centrolene (Amphibia: Anura: Athesphatanura: Centrolenidae) that inhabits the elfin forests of the Cordillera del Cóndor, an isolated mountain chain separated from the Cordillera Oriental of the Andes by the valley of the River Zamora. This new species is characterized by having vomerine teeth; a subacuminated snout in dorsal view and strongly sloping in profile; a tympanic annulus rather indistinct; shagreened dorsal skin with low warts and abundant spicules; a subcloacal area granular with several enameled warts; humeral spines in adult males; enameled ulnar folds; enameled metatarsal folds; a row of distinct enameled tubercles along the outer tarsal edges; and a green dorsum in life with abundant light and dark flecks. This taxon is the most distinct of a phenetic-set of species that includes Centrolene altitudinale, C. buckleyi, C. heloderma, C. hesperium, C. lemniscatum, and C. venezuelense.
Cita / Citation: Cisneros-Heredia, D.F. & Morales-Mite, M.A. (2008) A new species of glassfrog from the elfin forests of the Cordillera del Cóndor, southeastern Ecuador (Anura: Centrolenidae). Herpetozoa 21 (1/2): 49-56.
Mas información: http://www.cisneros-heredia.org/public
Abstract.-- We describe a new species of glassfrog of the genus Centrolene (Amphibia: Anura: Athesphatanura: Centrolenidae) that inhabits the elfin forests of the Cordillera del Cóndor, an isolated mountain chain separated from the Cordillera Oriental of the Andes by the valley of the River Zamora. This new species is characterized by having vomerine teeth; a subacuminated snout in dorsal view and strongly sloping in profile; a tympanic annulus rather indistinct; shagreened dorsal skin with low warts and abundant spicules; a subcloacal area granular with several enameled warts; humeral spines in adult males; enameled ulnar folds; enameled metatarsal folds; a row of distinct enameled tubercles along the outer tarsal edges; and a green dorsum in life with abundant light and dark flecks. This taxon is the most distinct of a phenetic-set of species that includes Centrolene altitudinale, C. buckleyi, C. heloderma, C. hesperium, C. lemniscatum, and C. venezuelense.
Cita / Citation: Cisneros-Heredia, D.F. & Morales-Mite, M.A. (2008) A new species of glassfrog from the elfin forests of the Cordillera del Cóndor, southeastern Ecuador (Anura: Centrolenidae). Herpetozoa 21 (1/2): 49-56.
Mas información: http://www.cisneros-heredia.org/public
09 octubre 2007
Cochranella erminea sp. nov.
Cochranella erminea, a new species of Centrolenidae (Amphibia: Anura: Athesphatanura) from Amazonian Peru)
Abstract.--We describe a new species of Centrolenidae, Cochranella erminea n. sp., from the Amazonian lowlands of the department of Junín, Peru. This new species is diagnosed from other centrolenids by having vomerine teeth, bones green in life, parietal peritoneum and pericardium white, all other visceral peritonea clear, dorsum in life viridian to olive green with abundant enameled (bright white) flecks/spots on flat warts, and scattered larger dark blue spots on warts, extensive webbing between outer fingers, snout in profile slightly sloping anteroventraly, and rounded in dorsal view, iris in life between light grey and slate gray with fine darker gray reticulations. We also present new information on the distribution of C. truebae and C. ametarsia in Peru..
Cita / Citation: Torres-Gastello, C.P., J. Suarez-Segovia, J. & D.F. Cisneros-Heredia. 2007. Cochranella erminea, a new species of Centrolenidae (Amphibia: Anura: Athesphatanura) from Amazonian Peru. Journal of the National Museum (Prague), Natural History Series 176 (1): 1-12.
Mas información: http://www.cisneros-heredia.org/public
Abstract.--We describe a new species of Centrolenidae, Cochranella erminea n. sp., from the Amazonian lowlands of the department of Junín, Peru. This new species is diagnosed from other centrolenids by having vomerine teeth, bones green in life, parietal peritoneum and pericardium white, all other visceral peritonea clear, dorsum in life viridian to olive green with abundant enameled (bright white) flecks/spots on flat warts, and scattered larger dark blue spots on warts, extensive webbing between outer fingers, snout in profile slightly sloping anteroventraly, and rounded in dorsal view, iris in life between light grey and slate gray with fine darker gray reticulations. We also present new information on the distribution of C. truebae and C. ametarsia in Peru..
Cita / Citation: Torres-Gastello, C.P., J. Suarez-Segovia, J. & D.F. Cisneros-Heredia. 2007. Cochranella erminea, a new species of Centrolenidae (Amphibia: Anura: Athesphatanura) from Amazonian Peru. Journal of the National Museum (Prague), Natural History Series 176 (1): 1-12.
Mas información: http://www.cisneros-heredia.org/public
31 agosto 2007
Nymphargus new genus
Revision of the characters of Centrolenidae (Amphibia: Anura: Athesphatanura), with comments on its taxonomy and the description of new taxa of glassfrogs
Abstract.--Anurans of the family Centrolenidae are a diverse clade of arboreal frogs distributed across tropical America. Knowledge of their taxonomy, systematics, ecology, behavior, morphology, and other evolutionary aspects of their biology is deficient. Relationships among centrolenid species remain largely unresolved, with no satisfactory phylogenetic hypothesis, and none of the current genera has compelling evidence of monophyly. Further, understanding the phylogeny of glassfrogs is constrained by species-level taxonomic problems, including incorrect description of characters, incomplete analyses of intraspecific variation, and lack of appreciation of species diversity. Herein, we define and analyze the 23 characters that are useful, in combination, in diagnosing centrolenid species, and thereby provide a reference for the use of future workers. We propose revised classifications for the parietal and visceral peritoneal pigmentation, liver form and coloration of its associated hepatic peritoneum, nuptial excrescences, and hand ornamentation. We comment on the generic and species-level taxonomy of Centrolenidae, proposing the recognition of a new genus and describing a new species from Ecuador. We treat Hyla ocellifera Boulenger as a synonym of Centrolene prosoblepon (Boettger), Hyalinobatrachium cardiacalyptum McCranie & Wilson as a synonym of Hyalinobatrachium chirripoi (Taylor), and Hyalinobatrachium crybetes McCranie and Wilson as a synonym of Hyalinobatrachium colymbiphyllum (Taylor). We also present an annotated list of the species of glassfrogs from the Republic of Ecuador with some distributional remarks.
Resumen.--Los anuros de la familia Centrolenidae forman un clado diverso de ranas arbóreas distribuidas a lo largo de América tropical. El conocimiento sobre su taxonomía, sistemática, ecología, comportamiento, morfología y otros aspectos biológicos y evolutivos es deficiente. Las relaciones entre las especies de centrolénidos permanecen ampliamente sin resolver, sin hipótesis filogenéticas satisfactorias y todos los géneros actuales tienen evidencia clara de su no-monofília. Más aún, el entendimiento de la filogenia de las ranas de cristal está limitado por problemas taxonómicos al nivel de especies, incluyendo la descripción incorrecta de caracteres, análisis incompletos de la variación intraespecífica y la falta de apreciación de la diversidad de especies. En este trabajo, nosotro definimos y analizamos los 23 caracteres que son útiles, en combinación, para diagnosticar todas las especies de centrolénidos, proveyendo una referencia para el uso de futuros investigadores. Proponemos clasificaciones revisadas para la pigmentación de los peritoneos parietal y visceral, la forma del hígado y la coloración del peritoneo hepático asociado, las excrescencias nupciales y las ornamentaciones manuales. Comentamos sobre la taxonomía a nivel genérico y específico de Centrolenidae, proponiendo el reconocimiento de un nuevo género y la descripción de una nueva especie de Ecuador. Colocamos a Hyla ocellifera Boulenger como un sinónimo de Centrolene prosoblepon (Boettger); a Hyalinobatrachium cardiacalyptum McCranie & Wilson como sinónimo de Hyalinobatrachium chirripoi (Taylor); y a Hyalinobatrachium crybetes McCranie and Wilson como sinónimo de Hyalinobatrachium colymbiphyllum (Taylor). Presentamos una lista anotada de las especies de ranas de cristal de la República del Ecuador con algunos comentarios sobre su distribución.
Cita / Citation: Cisneros-Heredia, D. F. & R. W McDiarmid. 2007. Revision of the characters of Centrolenidae (Amphibia: Anura: Athesphatanura), with comments on its taxonomy and the description of new taxa of glassfrogs. Zootaxa 1572: 1-82.
Descargar el pdf de este artículo: HAZ CLICK AQUI
Mas información: http://www.cisneros-heredia.org/public
Abstract.--Anurans of the family Centrolenidae are a diverse clade of arboreal frogs distributed across tropical America. Knowledge of their taxonomy, systematics, ecology, behavior, morphology, and other evolutionary aspects of their biology is deficient. Relationships among centrolenid species remain largely unresolved, with no satisfactory phylogenetic hypothesis, and none of the current genera has compelling evidence of monophyly. Further, understanding the phylogeny of glassfrogs is constrained by species-level taxonomic problems, including incorrect description of characters, incomplete analyses of intraspecific variation, and lack of appreciation of species diversity. Herein, we define and analyze the 23 characters that are useful, in combination, in diagnosing centrolenid species, and thereby provide a reference for the use of future workers. We propose revised classifications for the parietal and visceral peritoneal pigmentation, liver form and coloration of its associated hepatic peritoneum, nuptial excrescences, and hand ornamentation. We comment on the generic and species-level taxonomy of Centrolenidae, proposing the recognition of a new genus and describing a new species from Ecuador. We treat Hyla ocellifera Boulenger as a synonym of Centrolene prosoblepon (Boettger), Hyalinobatrachium cardiacalyptum McCranie & Wilson as a synonym of Hyalinobatrachium chirripoi (Taylor), and Hyalinobatrachium crybetes McCranie and Wilson as a synonym of Hyalinobatrachium colymbiphyllum (Taylor). We also present an annotated list of the species of glassfrogs from the Republic of Ecuador with some distributional remarks.
Resumen.--Los anuros de la familia Centrolenidae forman un clado diverso de ranas arbóreas distribuidas a lo largo de América tropical. El conocimiento sobre su taxonomía, sistemática, ecología, comportamiento, morfología y otros aspectos biológicos y evolutivos es deficiente. Las relaciones entre las especies de centrolénidos permanecen ampliamente sin resolver, sin hipótesis filogenéticas satisfactorias y todos los géneros actuales tienen evidencia clara de su no-monofília. Más aún, el entendimiento de la filogenia de las ranas de cristal está limitado por problemas taxonómicos al nivel de especies, incluyendo la descripción incorrecta de caracteres, análisis incompletos de la variación intraespecífica y la falta de apreciación de la diversidad de especies. En este trabajo, nosotro definimos y analizamos los 23 caracteres que son útiles, en combinación, para diagnosticar todas las especies de centrolénidos, proveyendo una referencia para el uso de futuros investigadores. Proponemos clasificaciones revisadas para la pigmentación de los peritoneos parietal y visceral, la forma del hígado y la coloración del peritoneo hepático asociado, las excrescencias nupciales y las ornamentaciones manuales. Comentamos sobre la taxonomía a nivel genérico y específico de Centrolenidae, proponiendo el reconocimiento de un nuevo género y la descripción de una nueva especie de Ecuador. Colocamos a Hyla ocellifera Boulenger como un sinónimo de Centrolene prosoblepon (Boettger); a Hyalinobatrachium cardiacalyptum McCranie & Wilson como sinónimo de Hyalinobatrachium chirripoi (Taylor); y a Hyalinobatrachium crybetes McCranie and Wilson como sinónimo de Hyalinobatrachium colymbiphyllum (Taylor). Presentamos una lista anotada de las especies de ranas de cristal de la República del Ecuador con algunos comentarios sobre su distribución.
Cita / Citation: Cisneros-Heredia, D. F. & R. W McDiarmid. 2007. Revision of the characters of Centrolenidae (Amphibia: Anura: Athesphatanura), with comments on its taxonomy and the description of new taxa of glassfrogs. Zootaxa 1572: 1-82.
Descargar el pdf de este artículo: HAZ CLICK AQUI
Mas información: http://www.cisneros-heredia.org/public
27 agosto 2007
Centrolene durrellorum sp. nov.
A new species of glassfrog of the genus Centrolene from the foothills of Cordillera Oriental of Ecuador (Anura: Centrolenidae)
Abstract.--A new species of frog of the family Centrolenidae is described from Ecuador, Centrolene durrellorum sp. nov. This new taxon is the first species of the genus Centrolene known to inhabit the central and southern foothills of the Cordillera Oriental of Ecuador. The new species is diagnosed from other centrolenid taxa by its moderate body size (25.7–26.1 mm adult males), uniform coloration (green in life, pale lavender in preservative), rounded snout in dorsal and lateral views, presence of medium-sized straight humeral spines with a moderate spiny point in adult males and absence of guanophores on the visceral peritonea.
Cita / Citation: Cisneros-Heredia, D. F. 2007. A new species of glassfrog of the genus Centrolene
from the foothills of Cordillera Oriental of Ecuador. Herpetozoa 20 (1/2): 27-34.
Mas información: http://www.cisneros-heredia.org/public
Abstract.--A new species of frog of the family Centrolenidae is described from Ecuador, Centrolene durrellorum sp. nov. This new taxon is the first species of the genus Centrolene known to inhabit the central and southern foothills of the Cordillera Oriental of Ecuador. The new species is diagnosed from other centrolenid taxa by its moderate body size (25.7–26.1 mm adult males), uniform coloration (green in life, pale lavender in preservative), rounded snout in dorsal and lateral views, presence of medium-sized straight humeral spines with a moderate spiny point in adult males and absence of guanophores on the visceral peritonea.
Cita / Citation: Cisneros-Heredia, D. F. 2007. A new species of glassfrog of the genus Centrolene
from the foothills of Cordillera Oriental of Ecuador. Herpetozoa 20 (1/2): 27-34.
Mas información: http://www.cisneros-heredia.org/public
23 agosto 2007
Cochranella buenaventura sp. nov.
A NEW SPECIES OF GLASSFROG (CENTROLENIDAE) FROM THE SOUTHERN ANDEAN FOOTHILLS ON THE WEST ECUADORIAN REGION
Abstract.--Cochranella buenaventura sp. nov. is described from the southern foothills of the Cordillera Occidental, Andes of Ecuador. The new species inhabits the Seasonal Foothill Evergreen forests of the province of El Oro, in the West Ecuadorian biogeographic region. This species is distinguished from other species of glassfrogs by having a truncate snout in dorsal and lateral views, reduced webbing between fingers, absence of guanophores on the digestive visceral peritonea, but present on the renal capsule, absence of humeral spine, green dorsum in life with scattered pale yellow spots, bright yellow hands and feet discs, and moderate body size (20.9-22.4 mm snout-vent length in adult males).
Cita / Citation: Cisneros-Heredia, D. F. & M. H. Yánez-Muñoz. 2007. A NEW SPECIES OF GLASSFROG (CENTROLENIDAE) FROM THE SOUTHERN ANDEAN FOOTHILLS ON THE WEST ECUADORIAN REGION. South American Journal of Herpetology 2(1): 1-10.
Mas información: http://www.cisneros-heredia.org/public
Abstract.--Cochranella buenaventura sp. nov. is described from the southern foothills of the Cordillera Occidental, Andes of Ecuador. The new species inhabits the Seasonal Foothill Evergreen forests of the province of El Oro, in the West Ecuadorian biogeographic region. This species is distinguished from other species of glassfrogs by having a truncate snout in dorsal and lateral views, reduced webbing between fingers, absence of guanophores on the digestive visceral peritonea, but present on the renal capsule, absence of humeral spine, green dorsum in life with scattered pale yellow spots, bright yellow hands and feet discs, and moderate body size (20.9-22.4 mm snout-vent length in adult males).
Cita / Citation: Cisneros-Heredia, D. F. & M. H. Yánez-Muñoz. 2007. A NEW SPECIES OF GLASSFROG (CENTROLENIDAE) FROM THE SOUTHERN ANDEAN FOOTHILLS ON THE WEST ECUADORIAN REGION. South American Journal of Herpetology 2(1): 1-10.
Mas información: http://www.cisneros-heredia.org/public
07 agosto 2007
Hyalinobatrachium ruedai
NUEVA PUBLICACION / NEW PUBLICATION:
Primer registro de Hyalinobatrachium ruedai en Ecuador con notas sobre otras especies congenericas
Resumen.--Reportamos el primer registro de Hyalinobatrachium ruedai para Ecuador, extendiendo su distribución desde Colombia hasta los flancos centrales de la Cordillera Oriental de Ecuador. El análisis del material adicional y de la serie tipo de H. ruedai nos permite discutir su variación morfológica y de coloración. Algunas características previamente conocidas solo para taxones del Macizo Guayanés (ej. iris bicolor) son reportadas en H. ruedai. Se recomienda no subdividir al grupo H. fleischmanni en subgrupos. Comentamos el estado taxonómico de algunas especies de la región Pacífica de Ecuador, caracterizamos a H. petersi y reconocemos que actualmente bajo los nombres Hyalinobatrachium fleischmanni y H. valerioi hay al menos tres especies aún no descritas.
Abstract.--We report the first record of Hyalinobatrachium ruedai for Ecuador, extending its distribution range from Colombia to the central slopes of the Cordillera Oriental of Ecuador. Analysis of additional material and the type series of H. ruedai let us to comment on its morphological and coloration variation. Some characters previously known just from taxa of the Guiana Shield (eg. bicolored iris) are reported from H. ruedai. We suggest to maintain undivided the H. fleischmanni group, without recognition of subgroups. We comment on the taxonomic status of some species from the Pacific region of Ecuador, characterizing H. petersi, and recognizing that currently under the names Hyalinobatrachium fleischmanni y H. valerioi there are at least three new species.
Cita / Citation: Cisneros-Heredia, D. F. & R. W. McDiarmid. 2007. Primer registro de Hyalinobatrachium ruedai en Ecuador con notas sobre otras especies congenericas. Herpetotropicos 3 (1): 21-28.
Mas información: http://www.cisneros-heredia.org/public
Primer registro de Hyalinobatrachium ruedai en Ecuador con notas sobre otras especies congenericas
Resumen.--Reportamos el primer registro de Hyalinobatrachium ruedai para Ecuador, extendiendo su distribución desde Colombia hasta los flancos centrales de la Cordillera Oriental de Ecuador. El análisis del material adicional y de la serie tipo de H. ruedai nos permite discutir su variación morfológica y de coloración. Algunas características previamente conocidas solo para taxones del Macizo Guayanés (ej. iris bicolor) son reportadas en H. ruedai. Se recomienda no subdividir al grupo H. fleischmanni en subgrupos. Comentamos el estado taxonómico de algunas especies de la región Pacífica de Ecuador, caracterizamos a H. petersi y reconocemos que actualmente bajo los nombres Hyalinobatrachium fleischmanni y H. valerioi hay al menos tres especies aún no descritas.
Abstract.--We report the first record of Hyalinobatrachium ruedai for Ecuador, extending its distribution range from Colombia to the central slopes of the Cordillera Oriental of Ecuador. Analysis of additional material and the type series of H. ruedai let us to comment on its morphological and coloration variation. Some characters previously known just from taxa of the Guiana Shield (eg. bicolored iris) are reported from H. ruedai. We suggest to maintain undivided the H. fleischmanni group, without recognition of subgroups. We comment on the taxonomic status of some species from the Pacific region of Ecuador, characterizing H. petersi, and recognizing that currently under the names Hyalinobatrachium fleischmanni y H. valerioi there are at least three new species.
Cita / Citation: Cisneros-Heredia, D. F. & R. W. McDiarmid. 2007. Primer registro de Hyalinobatrachium ruedai en Ecuador con notas sobre otras especies congenericas. Herpetotropicos 3 (1): 21-28.
Mas información: http://www.cisneros-heredia.org/public
29 mayo 2007
Cochranella amelie sp. nov.
NUEVA PUBLICACION / NEW PUBLICATION:
An enigmatic new species of Glassfrog (Amphibia: Anura: Centrolenidae) from the Amazonian Andean slopes of Ecuador
Abstract.--We describe a new species of frog of the family Centrolenidae, Cochranella amelie n. sp., from the central Amazonian Andean slopes, collected at the Oglan River, Province of Pastaza, Ecuador. This new species shows a very unusual combination of characters (lavender dorsum in preservative, absence of a humeral spine in adult males, transparent parietal peritoneum, white visceral peritonea, and bulbous liver). The relationships of this new species of Glassfrog are uncertain, and its assignment to Cochranella is preliminary.
Resumen.--Describimos una nueva especie de rana de la familia Centrolenidae, Cochranella amelie n. sp., de los flancos Andinos Amazónicos centrales, colectada en el Río Oglán, Provincia de Pastaza, Ecuador. Esta nueva especie presenta una muy inusual combinación de caracteres (dorso de color lavanda en preservante, ausencia de espina humeral en machos adultos, peritoneo parietal transparente, peritoneos viscerales blancos, e hígado bulboso). Las relaciones de esta nueva especie de Rana de Cristal son inciertas y su asignación a Cochranella es preliminar.
Cita / Citation: Cisneros-Heredia, D. F. & P. Meza-Ramos. 2007. An enigmatic new species of Glassfrog (Amphibia: Anura: Centrolenidae) from the Amazonian Andean slopes of Ecuador. Zootaxa 1485: 33-41.
Mas información: http://www.cisneros-heredia.org/public
An enigmatic new species of Glassfrog (Amphibia: Anura: Centrolenidae) from the Amazonian Andean slopes of Ecuador
Abstract.--We describe a new species of frog of the family Centrolenidae, Cochranella amelie n. sp., from the central Amazonian Andean slopes, collected at the Oglan River, Province of Pastaza, Ecuador. This new species shows a very unusual combination of characters (lavender dorsum in preservative, absence of a humeral spine in adult males, transparent parietal peritoneum, white visceral peritonea, and bulbous liver). The relationships of this new species of Glassfrog are uncertain, and its assignment to Cochranella is preliminary.
Resumen.--Describimos una nueva especie de rana de la familia Centrolenidae, Cochranella amelie n. sp., de los flancos Andinos Amazónicos centrales, colectada en el Río Oglán, Provincia de Pastaza, Ecuador. Esta nueva especie presenta una muy inusual combinación de caracteres (dorso de color lavanda en preservante, ausencia de espina humeral en machos adultos, peritoneo parietal transparente, peritoneos viscerales blancos, e hígado bulboso). Las relaciones de esta nueva especie de Rana de Cristal son inciertas y su asignación a Cochranella es preliminar.
Cita / Citation: Cisneros-Heredia, D. F. & P. Meza-Ramos. 2007. An enigmatic new species of Glassfrog (Amphibia: Anura: Centrolenidae) from the Amazonian Andean slopes of Ecuador. Zootaxa 1485: 33-41.
Mas información: http://www.cisneros-heredia.org/public
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