While checking out the garden tree trunks for anything of interest, this was spotted.
It is of course a Psychid case where the male moth has pupated and vacated his home. Removing the bark flake showed how he tucked himself away behind the loose bark for safety while he pupated, then emerged leaving the empty pupal case visible.
His case is interesting in that he covered it with grains of sand, instead of plant matter or detritus as usually found around the garden.
Click to enlarge.