I didn’t know where to begin to look on your site for this one. Not among your flies. Interesting black cloak with orange collar whe’s wearing. Recognize her ?
This is a Grape Leaf Skeletonizer, Harrisina americana, a moth. Caterpillars feed side by side, devouring an entire leaf before moving to the next leaf. They range over most of the Eastern U.S. This is a new species for our site.