This is a razor grinder cicada (Henicopsaltria eydouxii), originally uploaded by magdalena_b.
A Razor Grinder found by Vicki Nunn in Gladstone.
More photos of Razor Grinders.
I wish I had a sound file to post.
The Razor Grinder is found in eastern Queensland and NSW, and most common in December & January (Moulds, M.S.. Australian Cicadas Kennsignton: New South Wales Press, 1990, p. 68.)