I'm not saying your confirmation is wrong, but Wikipedia states that the Zizina labradus is misidentified as otis. It also says that otis does not live in Australia.
Hi Birdy, Zizina labradus is the old scientific name for this butterfly, it has been updated to Zizina otis. A good authority to check current scientific names is the online Australian Faunal Directory because other sources like WIkipedia can sometimes be out of date. Cheers Suzi