we live in Melbourne, Australia and found this green giant somewhat in our garden. It flew away making a tremendous noise (like a helicopter taking off) . Can You tell us what that is? Regards,
Dr. Christian Karcher M.D.
This is a Green Grocer Cicada, Cyclochila australasiae. According to the Scribbly Gum Website, the Green Grocer Cicada is the loudest insect in the world.