Phyllophaga sp. (May Beetle).
Size: approx. 10 mm. Photo: 04/25/12.

The genus Phyllophaga includes over 400 species in North America. This specimen could possibly belong to P. crenulata. Adults feed on foliage and can cause significant damage if they occur in large numbers. The larvae are the infamous white grubs. They feed on the roots of grasses as well as other plants including vegetables. The grubs live below ground for 3-4 years before becoming adult beetles. The small photos (Aug. 2014, June 2015) show rather different looking specimens.