Hi Michael M The following reference indicates there are a number of species in Ogmograptis: https://theconversation.com/unravelling-the-mystery-of-eucalypt-scribbles-11023 "Ogmograptis comprises many species in three groups, with the biology known only for those making scribbles on smooth-barked eucalypts. We described 11 new species."
So I suggest we change the name to Ogmograptis sp. (genus)
There are at least two Scribbly gum moth larvae responsible for markings on Eucalyptus rossii, see https://csiropedia.csiro.au/scribbly-gum-moths/ , so maybe there is another on different eucalypts.