Much to my delight I have at least 3 Garden Spiders in my tomato plot. They are also known as Argiope aurantia. I have observed them with Leaf Footed bugs and Stink Bugs in their webs. The Leaf Footed bugs and Stink bugs are harmful to tomatoes among other fruits, vegetables and nuts. They use their mouth like parts to inject their saliva into the food material, dissolve the contents and suck in the digesting mixture. This negatively affects the flavor and causes cosmetic damage to the object they are feeding on. They are no match for the Garden Spider. It is fascinating to watch the Garden Spider pounce on their webbed prey and spin them up in their silks so they can't escape. These spiders are very beneficial to a gardening landscape.
Garden Spider with Brown Stink Bug
Garden Spider with Leaf Footed Bug (right)
I have to admit one thing. The second picture was a result of my experiment where I caught a Leaf Footed bug and tossed him in my female Garden Spiders web to see what would happen. Wow .. that was fun!