Picture of Bee, Wasp, Hornet, Yellow Jacket Stings
There are many different types of insects that can bite or sting. The stings of members of the Hymenoptera family -- bees (honey bees, Africanized killer bees, bumble bees), ants, and wasps (hornets, yellow jackets, paper wasps) -- are most likely to cause potentially serious medical problems or even death. These insects live in colonies. If you are stung by one, others may not be far behind and repeated stings are possible.
Text Reference: UpToDate: "Bee and Insect Stings (Beyond the Basics)"