My neighbour brought this into me today, he found it on a rose bush.
The closest I can get is the Vapor moth but I stand to be corrected by you knowledgable folk ;)
(http://img124.imageshack.us/img124/4099/sunset071copygm5.th.jpg) (http://img124.imageshack.us/my.php?image=sunset071copygm5.jpg)
Looks likely but I'm no expert either..
:-\
Vapourer, you're right.