Bagworm Moth

Unidentified Psychidae. This kind of moth is very difficult to identify. Wikipedia explains that, because the "case" or "Bag" is always unique to each species, the best way to identify a Bagworm Moth is by its case. I have never been able to achieve that, but I take some comfort from the fact that even the experts in Philippine Lepidoptera seem to have the same problem as very few of their specimens have been identified to species level.