When you notice one of your frogs is sick or dies (as in the case of the female that you found dead) it is very important to separate the sick frogs from the healthy ones so whatever illness one may have had doesn't spread and kill the whole collection. We call this quarantining. Also you do this when you get a new frog that you plan on introducing to the rest of the frogs just in case they have some sort of illness they caught from the store or in transit from the store.

It would also help the experts on this site if you posted their conditions, lighting, temperature and humidity, tank size, what plants you have in the tank, what you're feeding your white's and anything else that has changed since your frogs have become sick.

Also, you can check out the frog first aid section written by Paul Rust, he's very knowledgeable about frog illness and how to treat them, along with Kurt, John, and Cheri, who are also very knowledgeable about tree frogs. These guys have helped me in the past with my White's, who just recently got over an infection. Here's a link to the frog first aid section if you can't find it:

http://www.frogforum.net/care-articl...first-aid.html

And everyone will tell you that if you're truly worried you should find a herp vet as fast as you can and take your frog in, maybe both of the one's left alive just in case they both have it. But please separate your sick frog from your healthy frog as fast as you can so this illness doesn't spread, it sounds to me like your frog could have caught this from the dead female that was left in the tank.

Keep in mind I am no expert I have no idea what your frog could have, I just wanted to post these steps for you so you can figure out what's wrong with your frog as soon as possible.

I hope he gets well, please keep this thread updated.