the term "killer bees" refers to a group of aggressive bees that escaped from an experiment in brazil in 1957. they have migrated at a rate of 100-300 miles per year and have arrived in the united states.there have been reports that killer bees are larger than the european honeybees we have grown accustomed to in the united states.in truth they are a little smaller.some people who have been stung have said that the killer bees have stung them repeatedly.they are incapable of stinging more than once as they lose their stinger with the