Abstract Since 2005, the Brazilian Ornithological Records Committee (CBRO) has published
updated checklists of Brazilian birds almost every year. Herein, we present a completely …

Megascops is the most species-rich owl genus in the New World, with 21 species currently
recognized. Phylogenetic relationships within this genus are notoriously difficult to establish …

The Amazon is the primary source of Neotropical diversity and a nexus for discussions on
processes that drive biotic diversification. Biogeographers have focused on the roles of …

The Amazon River and its major tributaries delimit the distributions of hundreds of terrestrial
taxa. It remains unclear whether river-bounded distributions and taxon replacements reflect …

The role of Amazonian rivers as drivers of speciation through vicariance remains
controversial. Here we explore the riverine hypothesis by comparing spatial and temporal …

Hybrid speciation is rare in vertebrates, and reproductive isolation arising from hybridization
is infrequently demonstrated. Here, we present evidence supporting a hybrid-speciation …

The squirrel monkey, Saimiri, is a pan-Amazonian Pleistocene radiation. We use statistical
phylogeographic methods to create a mitochondrial DNA-based timetree for 118 squirrel …

We possess limited understanding of how speciation unfolds in the most species-rich region
of the planet—the Amazon basin. Hybrid zones provide valuable information on the …

Many understory birds and other groups form genetically differentiated subspecies or closely
related species on opposite sides of major rivers of Amazonia, but are proposed to come …

Aim Our aim was to investigate how the distance to water (flooding gradients) and riverine
barriers (Tapajós and Jamanxim rivers) influence the distributional patterns of amphibian …