Larva - yes. It is almost in profile on side of tree. Rear claspers are beside the 2 long wispy bits of lichen ~ 1/4 way down picture. Its 'nose' is to right of circular mark on trunk at bottom of picture with wispy lichen sticking out in front of its head.
that is the general idea. Humans may not wish to eat or parisitize them BUT I once foolishly showed my neighbour some on his street tree. The ones I showed him were not there next time I looked, ones I had not shown him were.
shape of 'tail' - Entometa tend to have ~ cylindrical 'tail' stump, wattle species 'tail' is like stump of acacia twig, triangular in profile, other genus more colour, hairier etc