A hairy Eurasian beetle, Amphimallon solstitiale (family Scarabaeidae), which resembles a small cockchafer and flies at dusk in midsummer; also called midsummer chafer.
Origin
Mid 19th century.
Definition of summer chafer in US English:
summer chafer
noun
A hairy Eurasian beetle, Amphimallon solstitiale (family Scarabaeidae), which resembles a small cockchafer and flies at dusk in midsummer; also called midsummer chafer.