Looks like some sort of wild grape vine that we have had take over outside our fence in the backyard! Yep, I see a Va. Creeper leaf there too! We have a lot of Virginia Creeper in our area too. I have trained it along the side of the chain link fence and my DH wanted to rip it all out, but I told him to leave it, it's so pretty in the fall!
Excellent. And when they come, (and you know they will) we'll put up a sign that says: Japanese Beetles: Please help yourself to the anonymous grapevine in lieu of munching on the rest of the beautiful flowers, fruits, and veggies in this yard.
We call that wild grape vine Muscadine here in East Texas. It grows abundantly in the wooded areas near my home. I've never seen actual grapes on any, perhaps because they don't get enough sun, but if you do have one fruiting, they make excellent jelly and wine. Can't eat them alone- way too bitter.