A partial revision of the Ameerega hahneli complex (Anura: Dendrobatidae) and a new cryptic species from the East-Andean versant of Central Peru (original) (raw)
Related papers
A new species of Dendrobates (Anura: Dendrobatidae) from the Amazonian lowlands in Perú
Zootaxa, 2006
We describe a new species of poison frog from Amazonian Peru. Dendrobates uakarii, sp. nov. is distinguished by the presence of paired parallel dorsolateral lines: one yellow oblique lateral and one red dorsolateral (on each flank), with one vertebral line, similar in color to the dorsolateral lines. Phylogenetic analysis show that D. uakarii, sp. nov. and closely related taxa (D. ventrimaculatus sp. aff. Shreve from Porto Walter, Brazil and another from Amazonas, Brazil) form the sister group to D. fantasticus Boulenger. This new species can be distinguished from its sister taxa on the basis of 19 unique mitochondrial gene nucleotide site substitutions. Comparisons between closely related species show a slight difference in call repetition rate and mean frequency.
1998
Epipedobates simulans is a new species of den-drobatid poison frog from humid forest at the base of the eastern Andes (400-600 m elev.) in the upper Madre de Dios drainage of southeastem Peru. It is very similar to Epipedobates petersi (Silverstone), a composite species that included specimens of E. simulans in the type series. Al-though similar in color and morphology, these species have allopatric distributions and very dif-ferent vocalizations. The advertisement call of Epipedobates petersi is shown to be extraordinarily variable. The call may be produced in trains of single, double, or triple notes, with occasional groups of four notes, all at a frequency below 4000 Hz. The call of Epipedobates simulans is a continuous train of single, well-spaced notes given above or mostly above 4000 Hz. Epipedobates simulans is geographically closer to E. macero Rodriguez and Myers, which also has been confused with E. petersi. The range of E. macero is extended northward from the Rio Madre d...
The poison frogs of the Colombian Andes, Pacific lowlands and Panama have been recently recognized as a new, monophyletic and well-supported genus: Andinobates. The species richness and distribution within Andinobates remain poorly understood due to the paucity of geographic, genetic and phenotypic data. Here we use a combination of molecular, bioacoustic and morphometric evidence to describe a new species of Andean poison frog: Andinobates cassidyhornae sp. nov. from the high elevation cloud forests of the Colombian Cordillera Occidental, in the northwestern Andes. The new species is associated to the bombetes group and characterized by a unique combination of ventral and dorsal color patterns. Data on 1119 bp from two mitochondrial markers allowed us to reject the null hypotheses that A. cassidyhornae sp. nov. is part of the phenotypically similar and geographically less distant species: A. opisthomelas, A. virolinensis or A. bombetes. The best available phylogenetic trees and the genetic distance to other Andinobates species further support this decision. Altogether, the advertisement call parameters unambiguously separated A. cassidyhornae sp. nov. calls from the calls of the three closest species. The new species adds to a poorly known and highly endangered genus of poison frogs that requires further studies and urgent conservation measures. Resumen Las ranas venenosas diminutas de los Andes y Pacífico colombianos, y Panamá han sido recientemente reconocidas como un género nuevo, monofilético y bien soportado: las ranas venenosas andinas o Andinobates. La riqueza de especies y su distribución son poco conocidas, principalmente por la escasez de datos geográficos, genéticos y fenotípicos. Utilizamos una combinación de evidencia molecular, bioacústica y morfométrica para describir una nueva especie de rana venenosa andina, Andinobates cassidyhornae sp. nov., de los bosques nublados en los Andes noroccidentales de Colombia. La nueva especie es parte del grupo bombetes y se caracteriza por una combinación única de coloraciones dorsal y ventral. El análisis de 1119 pb de dos marcadores mitocondriales nos permitió rechazar las hipótesis nulas de que A. cassidyhornae sp. nov era parte de las especies fenotípicamente similares y geográficamente próximas A. opisthomelas, A. virolinensis o A. bombetes. Los mejores árboles filogenéticos disponibles y las distancias genéticas a otras especies de Andinobates también soportan esa conclusión. En conjunto, los parámetros de las llamadas de anuncio separaron claramente las llamadas de A. cassidyhornae sp. nov. de las llamadas de las tres especies relacionadas. Esta nueva especie se suma a las otras de este género de ranas venenosas, poco conocido pero muy amenazado, que requiere mayor estudio y urgentes medidas de conservación. TERMS OF USE This pdf is provided by Magnolia Press for private/research use. Commercial sale or deposition in a public library or website is prohibited.
Journal of Biogeography, 2006
Aim We study the Neotropical poison frogs of the genus Dendrobates Wagler, 1830 in order to clarify their phylogenetic relationships and biogeographical history. The genus Dendrobates is an excellent taxon for examining patterns of Neotropical diversification as the four major species groups appear to correspond roughly to distinct geographical regions: (1) trans-Andean, (2) Andean foreland, (3) Brazilian Shield and (4) Guianan Shield/Central America. In order to test the agreement of five of the most prominent hypotheses of Amazonian diversification, phylogenetic patterns were examined for agreement with patterns predicted by these hypotheses.
1987
Dendrobates andinus, new species, is a small arboreal frog from wet montane forest (1700-2020 m elev.) on the Pacific versant of the Andes in extreme southwestern Colombia. Although its color pattern-yellowish dorsolateral stripes on a black or dark brown body-is reminiscent of two other Colombian species (D. truncatus and Phyllobates aurotaenia), D. andinus is not closely related to them. Dendrobates andinus is tentatively placed in the pictus species group, in which its closest relative seems to be D. erythromos Vigle and Miyata, from lowland rain forest (170 m elev.) on the Pacific side of Ecuador. The recently described AMERICAN MUSEUM NOVITATES aurotaenia, ninguna de las cuales se relaciona cercanamente con la especie que se describe. D. andinus se coloca tentativamente en el grupo de especies pictus, el pariente m'as cercano del cual es Dendrobates erythromos Vigle y Miyata, que se encuentra en el bosque h(umedo de tierras bajas (altitud 170 m) en la zona Pacifica de Ecuador. "Phyllobates" azureiventris Kneller y Henle, recientemente descrita de Amazonas en Peru, incidentalmente se transfiere tambien al grupo pictus de Dendrobates.
2006
We name and describe two new species of poison dart frogs of the genus Dendrobates, from the northeastern flank of the cordillera Central in the departamentos de Tolima and Caldas. Those frogs share an exceptional synapomorphy within the family, which consists of a first toe reduced and fused with the second toe, allowing only four toes to be seen externally. Perhaps this unusual characteristic is reason to create a new genus within the Dendrobatidae, however, this must await a period of further investigation of the phylogeny of these two species, including a molecular and anatomic analysis. Elucidating the taxonomic position of these species and the naming a new genus, if found to be appropriate and applicable, will be the subject of a future manuscript.
Zootaxa, 2013
The poison frogs of the Colombian Andes, Pacific lowlands and Panama have been recently recognized as a new, monophyletic and well-supported genus: Andinobates. The species richness and distribution within Andinobates remain poorly understood due to the paucity of geographic, genetic and phenotypic data. Here we use a combination of molecular, bioacoustic and morphometric evidence to describe a new species of Andean poison frog: Andinobates cassidyhornae sp. nov. from the high elevation cloud forests of the Colombian Cordillera Occidental, in the northwestern Andes. The new species is associated to the bombetes group and characterized by a unique combination of ventral and dorsal color patterns. Data on 1119 bp from two mitochondrial markers allowed us to reject the null hypotheses that A. cassidyhornae sp. nov. is part of the phenotypically similar and geographically less distant species: A. opisthomelas, A. virolinensis or A. bombetes. The best available phylogenetic trees and the genetic distance to other Andinobates species further support this decision. Altogether, the advertisement call parameters unambiguously separated A. cassidyhornae sp. nov. calls from the calls of the three closest species. The new species adds to a poorly known and highly endangered genus of poison frogs that requires further studies and urgent conservation measures.