There are 2 different species of Castiarina here. First is Castiarina octospilota and second is probably a Castiarina imitator female. Not 100% sure because I need a bit better angle. Can you please post the pictures separately so they can have separate identification. Thanks.
On reflection a female imitator has a different pattern and is a but smaller. This is Castiarina inconspicua. At first glance it’s similar to Castiarina australasiae in pattern however that species has a very bright creamy white coloured pattern whereas C. inconspicua has a more yellow colour and a more bronze coloured pronotum which is dark bronze in australasiae.