I belatedly came across a newsstory about finding several unusual colours in the same species of katydid at the same time...
They were reported to the local museum, luckily, and here's the blog which carried the above photo plus an English translation of the original story...
http://www.pinktentacle.com/2007/09/pink-white-katydids-found-in-osaka/#comments
All of which got me to thinking...have genuine albino insects ever been confirmed or are specimens like this 'white' katydid just an extreme example of leucism, with some pigmentation still remaining, albeit in very slight amounts? My pet house cricket gang sometimes spawns the odd leucistic individual--the black/brown patterning is lightened to reddish brown/yellow, which is quite pretty--and of course everyone's quite pale when they're freshly molted, but this katydid...I have to admit that it's the whitest abnormally 'white' insect I've ever seen...