I think we're discussing basically the same type wasp, just a different variant. The nest is a flat pancake like affair attached by a single stem to the underside of the eaves. As I stated earlier, the best method to kill them is to use a garden sprayer with liquid laundry detergent and water and spray after sunset when they are all there. Adjust the nozzle to a stream rather than spray and target the nest. The wasps will drop off and fall to the ground where they die in about one minute. Writhing in agony of course which is appropriate considering what they do to us. The scariest wasp we have in California is the red winged tarantula hawk. It's the largest wasp I have ever seen with that same distinctive long wasp waist that can pivot around to sting you if you happen to be brave or foolish enough to try to pin one down with your fingers. As a curious kid I did try to capture one this way and gave up an instant later. They are solitary so far as I know and spend their time hunting for tarantulas in the hills so ordinarily, they are non threatening. They only try to sting you if you try to handle them. The stinger is huge in comparison to a bee or other stinging insect. It's used mostly to sting a tarantula into submission and feed to it's young. My dad related to me how he was riding on the hood of a pickup as a teenager out in the countryside with his buddies and one hit him on the nose and stung him inside a nostril. He said it hurt so bad he fell off the truck and was writhing on the ground in agony. You'll recognize this wasp by it's large size, distinctive red wings and dark black body. https://www.pinterest.com/pin/237353842844388765/