Unfortunately this is the lyrate back pattern which parinsignifera only has and signifera sometimes has. The belly pattern is then required to be sure of the species, granular grey in parinsignifera and marbled black and white in signifera. A trap for young players unless you know this fact. I don't suppose you remember the belly colour? Always worth posting an image of the belly of Crinia if you can. Of course their calls are different but no help for us here unless you heard this individual calling.