Check EOL http://eol.org/pages/13718781/overview This site uses Paropsisterna as the genus. I believe most of the Chrysophtharta has been reclassified into Paropsisterna.
This is a definately a Eucalyptus leaf beetle, sometimes called a tortoise beetle (Paropsisterna nobilitata.) You will find them on flickr and this link shows several.
http://www.flickr.com/photos/49029566@N03/4702599160/in/gallery-66925960@N08-72157627836822370/
Ladybird beetles have the same basic shape but are carnivorous but leaf beetles eat ... leaves.
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