Niche overlap between each pair of Amazonian and the Atlantic sister orchid-bee species obtained through Broennimann et al.'s (2012) framework.

<p>A) Niche overlap between the Amazonian <i>El. meriana</i> (red) and the Atlantic <i>El. atleticana</i> (blue). B) Niche overlap between the Amazonian <i>El. bombiformis</i> (red) and the Atlantic <i>El. niveofasciata</i> (blue). C) Niche overlap between the Amazonian <i>Ef. ornata</i> (red) and the Atlantic <i>Ef. atlantica</i> (blue). D) Niche overlap between the sympatric but unrelated Amazonian <i>Eulamea</i> species, <i>El. bombiformis</i> (red) and <i>El. meriana</i> (blue). E) Niche overlap between the sympatric but Atlantic <i>Eulaema</i> species, <i>El. atleticana</i> (red) and <i>El. niveofasciata</i> (blue). F) Niche overlap between the allopatric and unrelated Amazonian <i>El. meriana</i> (red) and the Atlantic <i>El. niveofascita</i> (blue). G) Niche overlap between the allopatric and unrelated Amazonian <i>El. bombiformis</i> (red) and the Atlantic <i>El. atleticana</i> (blue). The solid red and blue thin lines correspond to 100% of the available (background) environment for each species considered in the analyses. Red and blue shadings surrounded by thick lines correspond to the density of occurrences of each species per grid cell.</p>