The infamous bullet ant is a Hymenoptera that is well known for what has been rated the most painful sting of any insect. They are dark black with a little bit of a cinnamon or rust color in certain lights.
They live wherever they want!!! :-) These pictures were taken 25 feet in back of our house. Actually they do live in all parts of the Amazon rainforest of SE Ecuador. They nest in the ground at the foot of trees normally and will come pouring out at the slightest vibration.
I can attest to the pain of these stings having been stung 4 times. I would say the pain lasts between 12 -14 hours instead of the normally proposed 24 hours. I found I could go to sleep most times after only 12 hours. This ant definitely "doesn't play well with others."