Columbus, Franklin County, Ohio, USA
August 9, 2018
Found in our backyard where we have a 3 year old organic permaculture based vegetable, herb, fruit, nut and native plant garden with a large oak tree. It is a certified wildlife habitat and monarch ways station and has a new Italian bee apiary added in July 2018. Looked liked oversized bumblebee/carpenter bee but had this hornet in it's grasp. Image taken right before it flew off with it's cargo. Anyone have more information on this robber fly? I can't find much on it.