Here is a good link for the Yellowjacket. We have plenty of them in Florida. we have Hornets that burrow in the ground as well. They are so big they look like that Phil Colins video that has Phils face on a fly. and the Hornets are pretty smart, I ran over a nest once while cutting the grass, I am allergic to bees, so naturally I wanted to avoid it. I stepped off the lawnmower, went inside to get my racquet ball racquet, intending to smack it if it got aggressive on the next pass. It DID get aggressive, I stepped off the mower again and tried to sneak up behind it and it hovered and was able to turn to follow me without flying toward me, it was like a helicopter, and it constantly faced me,.. you know how jumping spiders will constantly face you?.. it did the same thing. I smacked it so hard I could not even find the pieces. Later on I learned that any petroleum product will drip them in mid flight. The petroleum melts it's protective UV wax coating and the insect is instantly blasted with UV rays that are lethal.