1. Rose chafer (Cetonia aurata)
Rose chafer on blossom
The rose chafer is iridescent golden-green and around 20mm long © Chrumps (CC BY-SA 3.0) via Wikimedia Commons
The rose chafer beetle flies noisily from flower to flower on warm summer days. Its larvae live on decaying plant material like compost and rotting wood.
This jewel-like beetle is found from the Midlands down through southern Britain and is now common in London's outer suburbs.
Max says, 'The rose chafer is a large and beautiful beetle that people are likely to notice.
'It became very rare 100 years ago and has only recently become common again. You can see it in places like Wimbledon Common and Brompton Cemetery in London, and even on flowering trees in gardens and along streets.
'It is becoming much more common in urban areas all over the south of Britain.'