A cryptic palm-pitviper species (Squamata: Viperidae: Bothriechis) from the Costa Rican highlands, with notes on the variation within B. nigroviridis

 

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Detalles Bibliográficos
Autores: Doan, Tiffany M., Mason, Andrew J., Castoe, Todd A., Sasa Marín, Mahmood, Parkinson, Christopher L.
Formato: artículo original
Fecha de Publicación:2016
Descripción:Middle America is one of the most biodiverse regions in the world, harboring an exceptional number of rare and endemic species. This is especially true of Middle American cloud forests, where montane specialists occupy restricted, high-elevation ranges making them attractive candidates for investigating historical biogeography and speciation. One such highland- restricted species, the black speckled palm-pitviper (Bothriechis nigroviridis), occupies the Central, Tilarán, and Talamanca Cordilleras in Costa Rica and Panama. In this study, we investigate the genetic and morphological variation among populations of B. nigroviridis by inferring a multilocus phylogeny (21 individuals) and analyzing meristic scale characters with a principal component analysis (64 individuals). We find B. nigroviridis sensu stricto to be composed of two deeply divergent lineages, one with a restricted range in the northern and central Cordillera Talamanca and the other ranging throughout the Central, Tilarán, and Talamanca Cordilleras. Furthermore, these two lineages are morphologically distinct, with previously unrecognized differences in several characters allowing us to name and diagnose a new species B. nubestris sp. nov. We also examine the genetic and morphological variation within B. nigroviridis and discuss biogeographic hypotheses that may have led to the diversification of Bothriechis lineages.
País:Kérwá
Institución:Universidad de Costa Rica
Repositorio:Kérwá
OAI Identifier:oai:kerwa.ucr.ac.cr:10669/76863
Acceso en línea:https://www.mapress.com/j/zt/article/view/zootaxa.4138.2.3
https://hdl.handle.net/10669/76863
Palabra clave:Bothriechis nubestris
Costa Rica
Middle America
New species
Reptilia
Snake
Squamata
Taxonomy
Viperidae
Mesoamérica
Nueva especie
Taxonomía
Víbora
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