Angela
As Lin suggested your photo is of a grapevine beetle (Pelidnota punctata). The species name means spotted, tho spotted is not used in the common name.
The adults do feed on grape foliage and sometimes the fruit when it is available. But it is not a problem/pest in healthy vineyards. These beetles do come to lights at night.
Larvae of this beetle feed on decaying roots and stumps of trees.
Spotted Grapevine Beetle by: Lin
This is what it looks like to me and unless they are numerous, they don't do much harm. They munch on the leaves.
