“…Even in these areas, its density is usually higher in the interior of forests, being rare or even absent at the edges (e.g. Tonhasca et al, 2002;Nem esio & Silveira, 2006;Nem esio, 2010bNem esio, , 2011aNem esio, , 2013aNem esio & Santos J unior, 2014), suggesting a very limited dispersal capability, a fact already observed for other orchid bees (Raw, 1989;Morato et al, 1992;Morato, 1994;Tonhasca et al, 2003). More important, recent studies have suggested that E. marianae has disappeared in areas where it had occurred and declined significantly in areas where it was recently abundant (Nem esio, 2011b(Nem esio, , 2013b.…”