It's painful and unpleasant to get stung by a bee, and some people have allergic reactions to the sting.
Does Bombus Ternarius sting?
Behavior. Queen and worker bumblebees can sting. Unlike honey bee stingers, a bumblebee's stinger lacks harpoon-like barbs on the end of the stinger, so B. ... ternarius is not normally aggressive, but will sting in defense of its nest or when threatened or provoked.
Do bumble bees sting or bite?
Bumblebees rarely sting. The chance of being stung by a bumblebee can be reduced by avoiding provoking them or making them aggressive. First, it is important to be calm when working with bumblebees. Do not wave your arms at the bumblebees, bump the hive, touch or hold the bumblebees, etc.