This is the same caterpillar as sighting 4367992, identified as a White Stemmed Wattle Moth. It was taken into captivity as requested by Don. I am not sure about the identification, as to me it is not as furry as the caterpillar photos of this species. I should not have described it as large. as it is only just 25mm. I am now not sure that the host wattle is an Acacia Mearnsii after all, as its leaves are bit bigger than the others nearby (so I have to get its food supplies from this one tree).