The mass deaths of bees were reported by beekeepers in four Brazilian states.
In Rio Grande do Sul alone, 400 million dead bees were found.
The chart shows how many bees were found dead in four Brazilian states in just three months – 400 million in Rio Grande do Sul, 7 million in São Paulo, 50 million in Santa Catarina and 45 million Mato Grosso do Sul.
Aldo Machado, vice president of Brazil's Rio Grande do Sul beekeeping association, told Bloomberg his colony was decimated in less than 48 hours after some of the bees first showed signs of illness.
While the mass deaths of bees in Brazil occurred this year, the link between pesticides and the decline of bee populations has long been studied.