Cup moth cocoon which has been raided by another creature. Dissection shows the remains of the pupating caterpillar. Although I am not too good at identifying the parts here it looks like the caterpillar was not far into metamorphosis when the parasite struck. It's possible (or probable?) that they were encased together. If the pupation had gone successfully the cap would have opened neatly at the dark ring.
Eucalyptus open forest to suburban.
This cocoon is one of the spottings at .... http://www.projectnoah.org/spottings/983... and also at ... http://www.projectnoah.org/spottings/964...... and six months later one has emerged successfully... http://www.projectnoah.org/spottings/154...
Lat: -37.90, Long: 145.31
Spotted on Apr 21, 2012
Submitted on Apr 21, 2012
and 1 other person favorited this spotting