The Grapevine Beetle, Pelidnota punctata, is a common resident of Missouri although this was the first one I had found - or rather that had found me. It is large, up to 1 1/4 inches long, and relatively heavy, especially when clinging on a bare leg in the dark. Slow moving and rather calm, it was in no hurry to walk away. They are described as rapid fliers with a curving flight pattern but this one stayed for pictures.
Also known as the Spotted June Beetle, Wikipedia says they occur as far south as Northwest Missouri. Apparently this one hadn't checked Wikipedia lately. Adults eat the fruit and leaves of grapevine although not usually enough to become a pest. They can vary in appearance enough that in 1915 there were 10 separate species and subspecies which eventually all were lumped into P. punctata.
|Kudzu-like Winter Grape|
More pictures at this site.