"Coccinella transversalis", common name "transverse ladybird". As per <a rel="nofollow" class="external free" href="http://www.ento.csiro.au/aicn/image.htm">http://www.ento.csiro.au/aicn/image.htm</a> which states: :"Images marked copyright free have been checked as per the requirements of the Australian Copyright Act and are in the public domain."
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CSIRO "Common Australian Insect Names"  at <a rel="nofollow" class="external free" href="http://www.ento.csiro.au/aicn/system/c_730.htm">http://www.ento.csiro.au/aicn/system/c_730.htm</a>