I've seen this wasp twice. The first time, she/he was divebombing a dead cicada and sounded like a helicopter. When I went to take pics of the spider, it nicely landed on the window. It's at least 4 inches long. I've never seen one this big (we're in Northwest IN). It has yellow markings on it's back. And here's the spider... we have had these around the house for the last two years. Their webs are huge, at least 3 foot across. I couldn't get the best pic from the house, but here's what I got. Spray does not kill them. There are two webs with two spiders on this window. It's out of the way, so I've left them for now. There's one by the back door that keeps getting taken down, and another by the hose spigot that also keeps getting taken down and rebuilt. My husband has messed with the web and they take off. I don't mind (much) if they are out of the way, but need to know if they are poisonous, etc. I have a very adventurous 2 year old. And now that I completely feel like things are crawling all over me... what do you think? What are they?