Masked Devil, Cyclochila australasiae spreta.
A very brightly coloured cicada, it has several colour morphs with different common names, like Green Grocer and Yellow monday for the green and yellow morphs.
There are over 200 species of cicada in Australia. They spend most of the their life cycle underground as nymphs, emerging en-masse as adults to breed.
By all accounts 2013/2014 was a bumper season for them in eastern Australia. The day this individual was photographed there were so many that their noise made my ears ring for a few hours afterwards. Male’s call have been known to hit 120 decibels!
Mount Lawson state park, Victoria