ants and bees could both be toned down a bit imo..
Ants usually break down half the level before you can do anything about it, they're really very fast. If you don't attack them, the entire level is soon completely crushed. This seems a bit much to me.
Bees could be toned down as well, as the last time I attacked them there was a seemingly infinite number of them. I killed a few hundred before I gave up. The hive could not be smashed, either.