Hi, can you please identify this large beetle flying around our outside light last night. I managed to get it to rest on my finger to take photo. It's quite an unusual looking beetle due to it's orange looking fans coming from it's head. For info the length was about 1 to 1 1/2 inches long.
This splendid beetle is the 'Maybug' or 'Cockchafer', Melolontha melolontha. As at least one of their common names suggest May is the month the adults are usually seen. Prior to emerging as adults the large cream coloured larvae feed on the roots of grasses and other plants. Their numbers had a bit of a dip 15-20 years ago but now they again seem as abundant as they ever were. They are attracted to lights at night, including lit windows. I can get 6 or so in my garden moth trap on many nights in May. In June they are replaced by the Summer Chafer, Amphimallon solstitialis, which is smaller though similar in general appearance.
Probaly goes without saying, beyond the larvae feeding on a few roots, they are harmless.