I don't understand what you want to download. We have an entry for Scolypopa australis in BugFiles here: http://davesgarden.com/guides/bf/go/1559/
They are very common in my garden here in Australia. They seem especially fond of Virginia Creeper.
At the time we set up Bug Files, the Order Hemiptera had been divided in two, with half the families staying in Hemiptera, but have being moved into Homoptera. This remained valid for a few tears and then theexperts decreed that they all go back to being Hemiptera. I would like to correct this in BugFiles, but we have so much data that the task is rather labour intensive and sadly we have retained Homoptera for the present.
Don't enter too much information when searching. If you search by genus and species, you will find the insect if it is in BugFiles.
There is nothing odd about the White Butterfly however. Only the common name is different. It is mostly known as Small White or Cabbage White, but if you searched on the scientific name alone: Pieris rapae, you would have found it. Where you have had a problem is in including the first letter of the genus as part of the species name. The name is Pieris rapae, with Pieris being the Genus and rapae being the species. In writing about it it may sometimes be written P. rapae, but the P. is just an abbreviation for the genus and is not actually part of the species name.