Also, much practical and academic work is being done about the best ways of keeping such bees, multiplying their colonies, and exploring the honey they produce. Among many others, species such as "jandaíra" ("Melipona subnitida") and true "uruçu" ("Melipona scutellaris") in the northeast of the country, "mandaçaia" ("Melipona quadrifasciata") and yellow "uruçu" ("Melipona rufiventris") in the south-southeast, "tiúba" or "jupará" ("Melipona interrupta") and straw-bee ("Scaptotrigona polysticta") in the north and "jataí" ("Tetragonisca angustula") throughout the country are increasingly kept by small, medium, and large producers. Many other species as the Mandaguari ("Scaptotrigona postica"), the Guaraipo ("Melipona bicolor") and the Iraí ("Nannotrigona testaceicornis"), to mention a few, are also reared in smaller scale. Through the cultivation of honey or selling of colonies, keeping stingless bees is an increasingly profitable activity. A single colony of species like mandaçaia and true "uruçu" can be divided up to four times a year, and each of the new colonies obtained this way can be sold for about US$100.