Complex sentence: All stingless bees of the tribe Meliponini build cells in a brood chamber within the nest; unlike bees of other tribes but they do not reuse these brood cells but constantly build new cells.
Split into simpler sentences: All stingless bees of the tribe Meliponini build cells in a brood chamber within the nest; unlike bees of other tribes. They do not reuse these brood cells but constantly build new cells.