Kind of strange that Honda won't sell you one since it appears to be an individually ordered part according to Majestic Honda. Click on this link and your problems will be solved:
http://www.hondaautomotiveparts.com/...y5=AIR+CLEANER
Since you still have the metal clip it looks like you just need the plastic part (number 21 for $1.94)
The parts are brand new and seem to be in stock more than not (and less expensive than what the local dealer would charge)
JoeCVT = Just your average CVT owner