What are the white things in my worm bin?

I've had my worm bin for about a month now. About 4 days ago, I added some new materials to one half of the bin. I believe it was some organic banana peels, 2 avocado peels, broken up egg shells, a lemon slice and some leftover oatmeal that had been made with either soymilk or water (I don't remember which). Anyways, I went to check on it today, and on the other side (where I didn't add anything new) I found some little white things on the surface of the bin. I'm not sure if these might be brand new egg cocoons or if they're maggots or even possibly pot worms. I do think I remember them moving though. What could these little things be? I guess they can't do any damage and will only help the docomposition process, but I'm just confused about this.