On Monday, I wrote:

The last two weeks I've had insect mysteries. Today it's a spider. Next to our vegetable garden, next to the Celery Farm.

What is it? (Reminded me of a Banana Spider I saw in the Louisiana Bayou last fall.)

Ron Shields identified it as  "Argiope aurantia, a showy spider usually noticed in late summer. It has several common names: black-and-yellow argiope, black and yellow garden spider, corn spider, golden garden spider; golden orb-weaver, writing spider, yellow garden argiope, yellow garden orb-weaver, and zipper spider." (Thanks, Ron!)