Cruz-Landim, C. da .; Reginato, R. D. .; Imperatriz-Fonseca, V. L. . Variation on Ovariole Number in Meliponinae (Hymenoptera, Apidae) queen’s Ovaries, With Comments on Ovary Development and Caste Differentiation. Pap. Avulsos Zool. 1997, 40, 289-296. https://doi.org/10.11606/0031-1049.1997.40.p289-296.