 Until recently (2015) it was believed that these were the only two existing species under the genus "Schwarziana" in the world.However, two more species were discovered in the high altitude environment of South America – "S. bocainensis" in southeastern Brazil and "S. chapadensis" in central Brazi.The stingless bee "S. quadripunctata" varies in size from 6.0 to 7.5 millimeters.