thread-waisted wasp

5770  Can you Please adv8ise what this is, photo taken in my sons backyard this evening , Aug 15, 2016, Cambridge, Ontario, Canada?  Thank You  Christine

It’s a thread-waisted wasp (Hymenoptera: Sphecidae) in the subfamily Ammophilinae; it looks like Eremnophila aureonotata . These are caterpillar hunters – see http://tinyurl.com/hex5o5a for some images. Ed Saugstad, retired entomologist; Sinks Grove, WV.