Mexican Bean Beetle, (Epilachna varivestis), feeds on foliage of bean plants. Both adult and larval stages chew holes in the leaves during summer. This photo shows egg, larva, pupa, and adult stages of the Mexican Bean Beetle.
The following links provide helpful information, images, and updates on vegetable pest and disease control for both commercial growers and home gardeners.
IPM Advisory - Small Fruit and Vegetable