on Acacia pycnantha
this post for the large, brown, lumpy gall
other posts of the same: covered in dark brown dust like spore.
I brought one home and cut it up;
texture, like a hard, woody, apple. flesh seemed to darken with oxidation. 2 different larvae inside with web-tunnel/trails of frass that one was in, hanging out of the "fruit" but with in the creases (I damaged one larvae) and an ant (also damaged)