Looks quite similar to 'Plectobela undescribed species' (albeit a fainter version) as recorded on Canberra Nature Map, see:- https://biocache.ala.org.au/occurrences/df239552-e183-44a8-8205-b39e07e08979
Yes Ian, possibly this one Plectobela sp. ANIC1 with little or no markings on the outer margin. http://www.boldsystems.org/index.php/Taxbrowser_Taxonpage?taxid=404736