TL:DR – There are numerous green moths, they have evolved to mimic leaves and so evade predators through a simple camouflage mechanism. Green Silver-lines is a lovely example of a green moth.
Some moth names are just so obvious. This member of the Lepidoptera is mostly green and has silvery lines on its wings, hence Green Silver-lines. It’s scientific binomial is a little more cryptic, Pseudoips prasinana.