killer bee 
noun informal, chiefly US
An Africanized honeybee. See Africanize (sense 2).Fire ants are capable of doing more economic damage than another stinging insect, the Africanized honeybee, also called the killer bee, which spread into the state in 1993....
- Some people are highly allergic to any bee sting, but a single sting from a killer bee will not kill the average person.
- There's a giant killer bee on my arm and it's neon orange and it's tickling me!