Other groups of Brazilian stingless bees, genera "Plebeia" and "Leurotrigona", are also very tame and much smaller, with one of them ("Plebeia minima") reaching no more than 2.5 mm (3/32") in length, and the lambe-olhos ("lick-eyes" bee, "Leurotrigona muelleri") being even smaller, at no more than 1.5 mm (3/32"). Many of these species are known as "mirim" (meaning 'small' in the Tupi-Guarani languages). As a result, they can be kept in very small artificial hives, thus being of interest for keepers who want them as pollinators in small glasshouses or just for the pleasure of having a ‘toy’ bee colony at home. Being so tiny, these species produce only a very small amount of honey, typically less than 500 ml (1/2 US pint) a year, so are not interesting for commercial honey production.