Found some reading for you, and it overall looks like I was right:

http://www.frogforum.net/general-dis...n-weevils.html
http://www.frogforum.net/food-feeder...an-weevil.html
http://www.frogforum.net/general-dis...n-weevils.html
http://www.frogforum.net/food-feeder...ood-frogs.html