The Cockchafer beetle is a large and noisy beetle that is harmless to humans. However it does considerable damage to crops and plants.
The lavae are fat creamy-white grubs with brown heads. They live in the soil for about 3 years eating plant roots. They especially like to eat cereal crops, and do a lot of damage.
Adult beetles chew flowers and leaves.
The beetle can be seen and heard buzzing from May to July....