A green larva from my previous observation was kept and these photos are of its transition from a larvae into a beetle. It stopped eating on 3 March and shed its skin and became a pupa (as in first photo here) on the evening of 6 March. The last three photos were taken on the 15 March as it emerged as a beetle, which has been thought by Martin Lagerwey to be Paropsisterna brunnea.
Strange little cases built with three offset chambers. About 12mm long overall. Several were found on a single callistemon plant always about midway on a stem. This is Tortricidae, Olethreutinae, Eucosmini, Spilonota sp.
This final instar larva of Paropsis atomaria was put into the container on 1st April. The second photo shows the resultant pupa on 21st April (note the discarded larval skin). The third photo, taken on 28th April shows the completed transition.