Complex sentence: Species of the genus "Scaptotrigona" have very large colonies, with up to 20,000 individuals, and can produce from 8 to 12 l of honey a year, but they are somewhat aggressive, thus not popular among Brazilian meliponine beekeepers.
Split into simpler sentences: Species of the genus "Scaptotrigona" have very large colonies, with up to 20,000 individuals, and can produce from 8 to 12 liters of honey a year. But they are somewhat aggressive and thus not popular among Brazilian meliponine beekeepers.