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Carina Oliveira-Abreu, Sérgio Dias Hilário, Cynthia Fernandes Pinto Luz, Isabel Alves dos Santos. "Pollen and nectar foraging by Melipona quadrifasciata anthidioides Lepeletier (Hymenoptera: Apidae: Meliponini) in natural habitat." Sociobiology 61.4 (2014)