Unlike bee population whereby the worker bee or scout bee feedback news through a complex domino style network to inform the rest of their community and then the queen bee(s) will still be busy shaping the population demographic otherwise it stays in-situ. This apparent intelligent isn't what I'm looking for but similar, imagine the world right now is being populated by homo collectus.
They evolved a brain unlike any other, there is only a single conscious mind shared among all the population by telepathy. This form of telepathy is a passive form of communication shared by all parties in range hence it is inevitable that separate tribes or clans would emerge until they meet, nonetheless I am wondering how could a caste system be integrated into the society and what advantages would it have to ensure their species can continue to enjoy prosperity and content in time to come?