Many many european chafers (June bugs) ..
The European chafer is a beetle of the Scarabaeidae family. Formerly found only in continental Europe, this invasive species is now found at temperate latitudes in North America, where they are commonly called June bugs. The large, white grubs of A. majale feed on the roots of most cool-latitude grasses, both wild and cultivated. This has made the European chafer an enemy of lawns.