Looks like a mealy-bugger to me!
And depending on the plant, in my experience, they're a pain in the bud to get rid off.
I used to find them A LOT on the plants in the Lowe's greenhouse.
Prevention is really the best way by washing/dipping the plant before you plant it!
Therefore I do not even buy any plans for my Viv. (or any houseplants) at 'my' Lowe's because I know they will always somehow be present.
If you have a bunch, I suggest to take your plant out of your viv. before the bugs spreads out to other plants and to make it easier on yourself. With this little 'bugger' you've got to be thorough or they will reappear again!
-Some say for light infestation dab insect with a Q-tip dipped in rubbing alcohol.
(Because they like to hide in little unreachable spaces and youu can't find them all, after this treatment often they reappear again).
-I've heard people using dish soap before. If you have a lot. Rinse of your plant well (this will get rid of the some bigger ones). Than 'wash' your plant with dish soap and rinse it off. You might have to do this a few times during some time period to make sure you've got every bugger!
-Insecticidal soap does also exist. But because it contains fatty acids from potassium (If I remember it right) it penetrates/damages the outer shell of the mealybug and dries them out. Good for the bug, BUT CAN YOU IMAGINE what it will do with your frog??!!!
DO ENOUGH RESEARCH and THINK TWICE before you even flirt with the idea using insecticidal soap
These are my 2 cents.. Use google, see what you can find.
Good luck and keep us updated!