We moved to Texas and got introduced to Pygmy Wasps. They build nests in the "typical" wasp locations...under eaves and such, but they also build nests in tree branches and tall stands of grass. Can't see them until you're weed eating and hit their nest, or riding the tractor and smack into them with your face. Not good.. I stock up on wasp spray every year. Have at least 6 cans out in the garage. When I see them, they meet their maker.